/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/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:45:44,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:45:44,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:45:44,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:45:44,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:45:44,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:45:44,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:45:44,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:45:44,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:45:44,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:45:44,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:45:44,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:45:44,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:45:44,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:45:44,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:45:44,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:45:44,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:45:44,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:45:44,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:45:44,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:45:44,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:45:44,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:45:44,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:45:44,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:45:44,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:45:44,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:45:44,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:45:44,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:45:44,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:45:44,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:45:44,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:45:44,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:45:44,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:45:44,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:45:44,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:45:44,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:45:44,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:45:44,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:45:44,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:45:44,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:45:44,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:45:44,987 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 11:45:45,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:45:45,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:45:45,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:45:45,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:45:45,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:45:45,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:45:45,014 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:45:45,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:45:45,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:45:45,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:45:45,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:45:45,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:45:45,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:45:45,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:45:45,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:45:45,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:45:45,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:45:45,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:45:45,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:45:45,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:45:45,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:45:45,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:45:45,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:45:45,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:45:45,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:45:45,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:45:45,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:45:45,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:45:45,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:45:45,298 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:45:45,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-09-16 11:45:45,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5edf0de/48e16ed51af2422e97d2517fa091406b/FLAG5553a6f69 [2022-09-16 11:45:45,717 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:45:45,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2022-09-16 11:45:45,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5edf0de/48e16ed51af2422e97d2517fa091406b/FLAG5553a6f69 [2022-09-16 11:45:45,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad5edf0de/48e16ed51af2422e97d2517fa091406b [2022-09-16 11:45:45,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:45:45,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:45:45,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:45:45,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:45:45,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:45:45,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:45:45" (1/1) ... [2022-09-16 11:45:45,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742e5592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:45, skipping insertion in model container [2022-09-16 11:45:45,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:45:45" (1/1) ... [2022-09-16 11:45:45,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:45:45,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:45:45,944 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/chl-node-symm.wvr.c[3305,3318] [2022-09-16 11:45:45,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:45:45,963 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:45:45,984 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/chl-node-symm.wvr.c[3305,3318] [2022-09-16 11:45:45,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:45:46,000 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:45:46,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46 WrapperNode [2022-09-16 11:45:46,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:45:46,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:45:46,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:45:46,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:45:46,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,046 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 360 [2022-09-16 11:45:46,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:45:46,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:45:46,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:45:46,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:45:46,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:45:46,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:45:46,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:45:46,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:45:46,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (1/1) ... [2022-09-16 11:45:46,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:45:46,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:46,132 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 11:45:46,151 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 11:45:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:45:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:45:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:45:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:45:46,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:45:46,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:45:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:45:46,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:45:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:45:46,175 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 11:45:46,267 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:45:46,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:45:46,771 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:45:46,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:45:46,790 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:45:46,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:45:46 BoogieIcfgContainer [2022-09-16 11:45:46,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:45:46,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:45:46,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:45:46,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:45:46,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:45:45" (1/3) ... [2022-09-16 11:45:46,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d190fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:45:46, skipping insertion in model container [2022-09-16 11:45:46,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:46" (2/3) ... [2022-09-16 11:45:46,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d190fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:45:46, skipping insertion in model container [2022-09-16 11:45:46,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:45:46" (3/3) ... [2022-09-16 11:45:46,801 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-09-16 11:45:46,815 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:45:46,815 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-09-16 11:45:46,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:45:46,933 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:45:46,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 460 places, 493 transitions, 1002 flow [2022-09-16 11:45:47,145 INFO L130 PetriNetUnfolder]: 40/491 cut-off events. [2022-09-16 11:45:47,146 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:45:47,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 491 events. 40/491 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 734 event pairs, 0 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 357. Up to 2 conditions per place. [2022-09-16 11:45:47,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 460 places, 493 transitions, 1002 flow [2022-09-16 11:45:47,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 437 places, 469 transitions, 950 flow [2022-09-16 11:45:47,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:45:47,188 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;@6857fcd0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:45:47,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-09-16 11:45:47,206 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-09-16 11:45:47,206 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:45:47,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:47,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:47,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash -950007164, now seen corresponding path program 1 times [2022-09-16 11:45:47,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:47,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509367683] [2022-09-16 11:45:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:47,484 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 11:45:47,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509367683] [2022-09-16 11:45:47,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509367683] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:47,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:47,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:45:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257667269] [2022-09-16 11:45:47,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:47,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:45:47,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:47,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:45:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:45:47,538 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 493 [2022-09-16 11:45:47,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 469 transitions, 950 flow. Second operand has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:47,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:47,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 493 [2022-09-16 11:45:47,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:47,817 INFO L130 PetriNetUnfolder]: 59/808 cut-off events. [2022-09-16 11:45:47,817 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-09-16 11:45:47,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 808 events. 59/808 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3215 event pairs, 15 based on Foata normal form. 29/714 useless extension candidates. Maximal degree in co-relation 564. Up to 90 conditions per place. [2022-09-16 11:45:47,826 INFO L137 encePairwiseOnDemand]: 465/493 looper letters, 59 selfloop transitions, 5 changer transitions 11/448 dead transitions. [2022-09-16 11:45:47,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 448 transitions, 1058 flow [2022-09-16 11:45:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2436 transitions. [2022-09-16 11:45:47,849 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2022-09-16 11:45:47,850 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2436 transitions. [2022-09-16 11:45:47,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2436 transitions. [2022-09-16 11:45:47,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:47,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2436 transitions. [2022-09-16 11:45:47,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 406.0) internal successors, (2436), 6 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:47,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 493.0) internal successors, (3451), 7 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:47,880 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 493.0) internal successors, (3451), 7 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:47,883 INFO L175 Difference]: Start difference. First operand has 437 places, 469 transitions, 950 flow. Second operand 6 states and 2436 transitions. [2022-09-16 11:45:47,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 448 transitions, 1058 flow [2022-09-16 11:45:47,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 448 transitions, 1050 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:47,901 INFO L231 Difference]: Finished difference. Result has 436 places, 437 transitions, 888 flow [2022-09-16 11:45:47,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=888, PETRI_PLACES=436, PETRI_TRANSITIONS=437} [2022-09-16 11:45:47,907 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, -1 predicate places. [2022-09-16 11:45:47,907 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 437 transitions, 888 flow [2022-09-16 11:45:47,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:47,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:47,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:45:47,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:47,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash 614549920, now seen corresponding path program 1 times [2022-09-16 11:45:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:47,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004101413] [2022-09-16 11:45:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:47,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:48,042 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 11:45:48,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:48,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004101413] [2022-09-16 11:45:48,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004101413] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:48,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:48,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215393146] [2022-09-16 11:45:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:48,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:48,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 493 [2022-09-16 11:45:48,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 437 transitions, 888 flow. Second operand has 4 states, 4 states have (on average 447.25) internal successors, (1789), 4 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:48,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 493 [2022-09-16 11:45:48,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:48,202 INFO L130 PetriNetUnfolder]: 59/795 cut-off events. [2022-09-16 11:45:48,204 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-09-16 11:45:48,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 795 events. 59/795 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3204 event pairs, 15 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 779. Up to 51 conditions per place. [2022-09-16 11:45:48,211 INFO L137 encePairwiseOnDemand]: 488/493 looper letters, 20 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-09-16 11:45:48,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 435 transitions, 930 flow [2022-09-16 11:45:48,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:45:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:45:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1805 transitions. [2022-09-16 11:45:48,219 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.915314401622718 [2022-09-16 11:45:48,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1805 transitions. [2022-09-16 11:45:48,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1805 transitions. [2022-09-16 11:45:48,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:48,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1805 transitions. [2022-09-16 11:45:48,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 451.25) internal successors, (1805), 4 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 493.0) internal successors, (2465), 5 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,229 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 493.0) internal successors, (2465), 5 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,229 INFO L175 Difference]: Start difference. First operand has 436 places, 437 transitions, 888 flow. Second operand 4 states and 1805 transitions. [2022-09-16 11:45:48,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 435 transitions, 930 flow [2022-09-16 11:45:48,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 435 transitions, 920 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:48,240 INFO L231 Difference]: Finished difference. Result has 421 places, 435 transitions, 880 flow [2022-09-16 11:45:48,240 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=880, PETRI_PLACES=421, PETRI_TRANSITIONS=435} [2022-09-16 11:45:48,241 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, -16 predicate places. [2022-09-16 11:45:48,241 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 435 transitions, 880 flow [2022-09-16 11:45:48,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 447.25) internal successors, (1789), 4 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:48,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:48,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:45:48,243 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1357355839, now seen corresponding path program 1 times [2022-09-16 11:45:48,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:48,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720931067] [2022-09-16 11:45:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:48,357 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 11:45:48,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:48,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720931067] [2022-09-16 11:45:48,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720931067] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:48,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:48,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:48,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520097248] [2022-09-16 11:45:48,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:48,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:48,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:48,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:48,364 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 493 [2022-09-16 11:45:48,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 435 transitions, 880 flow. Second operand has 4 states, 4 states have (on average 445.5) internal successors, (1782), 4 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:48,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 493 [2022-09-16 11:45:48,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:48,552 INFO L130 PetriNetUnfolder]: 39/758 cut-off events. [2022-09-16 11:45:48,552 INFO L131 PetriNetUnfolder]: For 4/6 co-relation queries the response was YES. [2022-09-16 11:45:48,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 758 events. 39/758 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2323 event pairs, 0 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 782. Up to 30 conditions per place. [2022-09-16 11:45:48,558 INFO L137 encePairwiseOnDemand]: 480/493 looper letters, 40 selfloop transitions, 9 changer transitions 0/456 dead transitions. [2022-09-16 11:45:48,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 456 transitions, 1024 flow [2022-09-16 11:45:48,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:45:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:45:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2273 transitions. [2022-09-16 11:45:48,563 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9221095334685598 [2022-09-16 11:45:48,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2273 transitions. [2022-09-16 11:45:48,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2273 transitions. [2022-09-16 11:45:48,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:48,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2273 transitions. [2022-09-16 11:45:48,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 454.6) internal successors, (2273), 5 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 493.0) internal successors, (2958), 6 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 493.0) internal successors, (2958), 6 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,575 INFO L175 Difference]: Start difference. First operand has 421 places, 435 transitions, 880 flow. Second operand 5 states and 2273 transitions. [2022-09-16 11:45:48,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 456 transitions, 1024 flow [2022-09-16 11:45:48,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 456 transitions, 1018 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:45:48,583 INFO L231 Difference]: Finished difference. Result has 425 places, 442 transitions, 941 flow [2022-09-16 11:45:48,584 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=941, PETRI_PLACES=425, PETRI_TRANSITIONS=442} [2022-09-16 11:45:48,586 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, -12 predicate places. [2022-09-16 11:45:48,586 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 442 transitions, 941 flow [2022-09-16 11:45:48,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 445.5) internal successors, (1782), 4 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:48,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:48,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:45:48,588 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:48,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:48,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1435923312, now seen corresponding path program 1 times [2022-09-16 11:45:48,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:48,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437172488] [2022-09-16 11:45:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:48,770 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 11:45:48,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:48,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437172488] [2022-09-16 11:45:48,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437172488] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:48,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:48,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:45:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136336068] [2022-09-16 11:45:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:48,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:45:48,779 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 372 out of 493 [2022-09-16 11:45:48,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 442 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 376.6666666666667) internal successors, (2260), 6 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:48,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:48,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 372 of 493 [2022-09-16 11:45:48,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:49,237 INFO L130 PetriNetUnfolder]: 255/2758 cut-off events. [2022-09-16 11:45:49,238 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-09-16 11:45:49,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3132 conditions, 2758 events. 255/2758 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 21585 event pairs, 96 based on Foata normal form. 0/2322 useless extension candidates. Maximal degree in co-relation 1623. Up to 310 conditions per place. [2022-09-16 11:45:49,256 INFO L137 encePairwiseOnDemand]: 486/493 looper letters, 73 selfloop transitions, 5 changer transitions 0/440 dead transitions. [2022-09-16 11:45:49,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 440 transitions, 1093 flow [2022-09-16 11:45:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:45:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:45:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2312 transitions. [2022-09-16 11:45:49,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7816091954022989 [2022-09-16 11:45:49,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2312 transitions. [2022-09-16 11:45:49,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2312 transitions. [2022-09-16 11:45:49,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:49,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2312 transitions. [2022-09-16 11:45:49,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 385.3333333333333) internal successors, (2312), 6 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 493.0) internal successors, (3451), 7 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 493.0) internal successors, (3451), 7 states have internal predecessors, (3451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,275 INFO L175 Difference]: Start difference. First operand has 425 places, 442 transitions, 941 flow. Second operand 6 states and 2312 transitions. [2022-09-16 11:45:49,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 440 transitions, 1093 flow [2022-09-16 11:45:49,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 440 transitions, 1088 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:49,284 INFO L231 Difference]: Finished difference. Result has 427 places, 440 transitions, 942 flow [2022-09-16 11:45:49,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=942, PETRI_PLACES=427, PETRI_TRANSITIONS=440} [2022-09-16 11:45:49,285 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, -10 predicate places. [2022-09-16 11:45:49,286 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 440 transitions, 942 flow [2022-09-16 11:45:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 376.6666666666667) internal successors, (2260), 6 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:49,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:49,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:45:49,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1563949009, now seen corresponding path program 1 times [2022-09-16 11:45:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243813991] [2022-09-16 11:45:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:49,372 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 11:45:49,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:49,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243813991] [2022-09-16 11:45:49,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243813991] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:49,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:49,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:49,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313067919] [2022-09-16 11:45:49,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:49,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:49,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:49,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:49,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:49,376 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 445 out of 493 [2022-09-16 11:45:49,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 440 transitions, 942 flow. Second operand has 4 states, 4 states have (on average 447.25) internal successors, (1789), 4 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:49,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 445 of 493 [2022-09-16 11:45:49,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:49,636 INFO L130 PetriNetUnfolder]: 129/1614 cut-off events. [2022-09-16 11:45:49,636 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-09-16 11:45:49,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 1614 events. 129/1614 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 9462 event pairs, 30 based on Foata normal form. 0/1380 useless extension candidates. Maximal degree in co-relation 1673. Up to 97 conditions per place. [2022-09-16 11:45:49,646 INFO L137 encePairwiseOnDemand]: 488/493 looper letters, 20 selfloop transitions, 3 changer transitions 0/438 dead transitions. [2022-09-16 11:45:49,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 438 transitions, 984 flow [2022-09-16 11:45:49,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:45:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:45:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1805 transitions. [2022-09-16 11:45:49,650 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.915314401622718 [2022-09-16 11:45:49,650 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1805 transitions. [2022-09-16 11:45:49,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1805 transitions. [2022-09-16 11:45:49,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:49,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1805 transitions. [2022-09-16 11:45:49,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 451.25) internal successors, (1805), 4 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 493.0) internal successors, (2465), 5 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,659 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 493.0) internal successors, (2465), 5 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,659 INFO L175 Difference]: Start difference. First operand has 427 places, 440 transitions, 942 flow. Second operand 4 states and 1805 transitions. [2022-09-16 11:45:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 438 transitions, 984 flow [2022-09-16 11:45:49,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 438 transitions, 975 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:45:49,667 INFO L231 Difference]: Finished difference. Result has 424 places, 438 transitions, 935 flow [2022-09-16 11:45:49,667 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=935, PETRI_PLACES=424, PETRI_TRANSITIONS=438} [2022-09-16 11:45:49,670 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, -13 predicate places. [2022-09-16 11:45:49,670 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 438 transitions, 935 flow [2022-09-16 11:45:49,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 447.25) internal successors, (1789), 4 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:49,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:49,671 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:45:49,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1599585319, now seen corresponding path program 1 times [2022-09-16 11:45:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:49,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821654780] [2022-09-16 11:45:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:49,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:49,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821654780] [2022-09-16 11:45:49,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821654780] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:49,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574279756] [2022-09-16 11:45:49,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:49,751 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 11:45:49,775 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 11:45:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:49,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:45:49,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:49,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:45:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:50,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574279756] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:45:50,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:45:50,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:45:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115002629] [2022-09-16 11:45:50,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:45:50,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:45:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:45:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:45:50,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 493 [2022-09-16 11:45:50,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 438 transitions, 935 flow. Second operand has 12 states, 12 states have (on average 446.6666666666667) internal successors, (5360), 12 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:50,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:50,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 493 [2022-09-16 11:45:50,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:50,529 INFO L130 PetriNetUnfolder]: 96/1711 cut-off events. [2022-09-16 11:45:50,530 INFO L131 PetriNetUnfolder]: For 33/38 co-relation queries the response was YES. [2022-09-16 11:45:50,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 1711 events. 96/1711 cut-off events. For 33/38 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 9084 event pairs, 0 based on Foata normal form. 6/1512 useless extension candidates. Maximal degree in co-relation 1849. Up to 23 conditions per place. [2022-09-16 11:45:50,548 INFO L137 encePairwiseOnDemand]: 478/493 looper letters, 76 selfloop transitions, 40 changer transitions 0/519 dead transitions. [2022-09-16 11:45:50,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 519 transitions, 1395 flow [2022-09-16 11:45:50,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:45:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:45:50,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 8114 transitions. [2022-09-16 11:45:50,564 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9143565472165878 [2022-09-16 11:45:50,565 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 8114 transitions. [2022-09-16 11:45:50,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 8114 transitions. [2022-09-16 11:45:50,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:50,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 8114 transitions. [2022-09-16 11:45:50,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 450.77777777777777) internal successors, (8114), 18 states have internal predecessors, (8114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:50,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 493.0) internal successors, (9367), 19 states have internal predecessors, (9367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:50,599 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 493.0) internal successors, (9367), 19 states have internal predecessors, (9367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:50,599 INFO L175 Difference]: Start difference. First operand has 424 places, 438 transitions, 935 flow. Second operand 18 states and 8114 transitions. [2022-09-16 11:45:50,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 519 transitions, 1395 flow [2022-09-16 11:45:50,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 519 transitions, 1389 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:45:50,614 INFO L231 Difference]: Finished difference. Result has 442 places, 465 transitions, 1167 flow [2022-09-16 11:45:50,615 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1167, PETRI_PLACES=442, PETRI_TRANSITIONS=465} [2022-09-16 11:45:50,616 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 5 predicate places. [2022-09-16 11:45:50,617 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 465 transitions, 1167 flow [2022-09-16 11:45:50,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 446.6666666666667) internal successors, (5360), 12 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:50,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:50,619 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:50,648 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 11:45:50,835 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,SelfDestructingSolverStorable5 [2022-09-16 11:45:50,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1952461886, now seen corresponding path program 1 times [2022-09-16 11:45:50,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:50,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614348751] [2022-09-16 11:45:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:50,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:50,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614348751] [2022-09-16 11:45:50,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614348751] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:50,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772154060] [2022-09-16 11:45:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:50,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:50,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:50,907 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 11:45:50,909 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 11:45:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:51,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:45:51,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:51,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:45:51,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772154060] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:51,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:45:51,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:45:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974302139] [2022-09-16 11:45:51,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:51,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:45:51,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:45:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:45:51,045 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 493 [2022-09-16 11:45:51,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 465 transitions, 1167 flow. Second operand has 6 states, 6 states have (on average 446.3333333333333) internal successors, (2678), 6 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:51,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:51,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 493 [2022-09-16 11:45:51,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:51,356 INFO L130 PetriNetUnfolder]: 96/1703 cut-off events. [2022-09-16 11:45:51,356 INFO L131 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2022-09-16 11:45:51,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1933 conditions, 1703 events. 96/1703 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 9009 event pairs, 0 based on Foata normal form. 8/1506 useless extension candidates. Maximal degree in co-relation 1856. Up to 48 conditions per place. [2022-09-16 11:45:51,378 INFO L137 encePairwiseOnDemand]: 482/493 looper letters, 41 selfloop transitions, 27 changer transitions 0/471 dead transitions. [2022-09-16 11:45:51,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 471 transitions, 1285 flow [2022-09-16 11:45:51,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:45:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:45:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3157 transitions. [2022-09-16 11:45:51,385 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9148073022312373 [2022-09-16 11:45:51,385 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3157 transitions. [2022-09-16 11:45:51,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3157 transitions. [2022-09-16 11:45:51,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:51,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3157 transitions. [2022-09-16 11:45:51,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 451.0) internal successors, (3157), 7 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:51,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 493.0) internal successors, (3944), 8 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:51,399 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 493.0) internal successors, (3944), 8 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:51,399 INFO L175 Difference]: Start difference. First operand has 442 places, 465 transitions, 1167 flow. Second operand 7 states and 3157 transitions. [2022-09-16 11:45:51,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 471 transitions, 1285 flow [2022-09-16 11:45:51,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 471 transitions, 1211 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:45:51,410 INFO L231 Difference]: Finished difference. Result has 437 places, 457 transitions, 1093 flow [2022-09-16 11:45:51,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=437, PETRI_TRANSITIONS=457} [2022-09-16 11:45:51,411 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 0 predicate places. [2022-09-16 11:45:51,411 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 457 transitions, 1093 flow [2022-09-16 11:45:51,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 446.3333333333333) internal successors, (2678), 6 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:51,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:51,413 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:51,440 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 11:45:51,627 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,SelfDestructingSolverStorable6 [2022-09-16 11:45:51,627 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2056054207, now seen corresponding path program 2 times [2022-09-16 11:45:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:51,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202033512] [2022-09-16 11:45:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:51,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:51,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202033512] [2022-09-16 11:45:51,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202033512] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:51,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799765148] [2022-09-16 11:45:51,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:45:51,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:51,723 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 11:45:51,749 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 11:45:51,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:45:51,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:45:51,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:45:51,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:45:51,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:45:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:45:52,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799765148] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:45:52,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:45:52,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 16 [2022-09-16 11:45:52,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463928642] [2022-09-16 11:45:52,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:45:52,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:45:52,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:52,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:45:52,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:45:52,060 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 415 out of 493 [2022-09-16 11:45:52,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 457 transitions, 1093 flow. Second operand has 17 states, 17 states have (on average 418.8235294117647) internal successors, (7120), 17 states have internal predecessors, (7120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:52,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:52,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 415 of 493 [2022-09-16 11:45:52,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:53,638 INFO L130 PetriNetUnfolder]: 407/4853 cut-off events. [2022-09-16 11:45:53,638 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2022-09-16 11:45:53,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 4853 events. 407/4853 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 41348 event pairs, 105 based on Foata normal form. 4/4143 useless extension candidates. Maximal degree in co-relation 5371. Up to 70 conditions per place. [2022-09-16 11:45:53,678 INFO L137 encePairwiseOnDemand]: 473/493 looper letters, 164 selfloop transitions, 65 changer transitions 0/607 dead transitions. [2022-09-16 11:45:53,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 607 transitions, 1934 flow [2022-09-16 11:45:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-16 11:45:53,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-09-16 11:45:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 20153 transitions. [2022-09-16 11:45:53,722 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.851631169709263 [2022-09-16 11:45:53,723 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 20153 transitions. [2022-09-16 11:45:53,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 20153 transitions. [2022-09-16 11:45:53,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:53,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 20153 transitions. [2022-09-16 11:45:53,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 419.8541666666667) internal successors, (20153), 48 states have internal predecessors, (20153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:53,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 493.0) internal successors, (24157), 49 states have internal predecessors, (24157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:53,815 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 493.0) internal successors, (24157), 49 states have internal predecessors, (24157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:53,815 INFO L175 Difference]: Start difference. First operand has 437 places, 457 transitions, 1093 flow. Second operand 48 states and 20153 transitions. [2022-09-16 11:45:53,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 607 transitions, 1934 flow [2022-09-16 11:45:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 607 transitions, 1891 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:45:53,827 INFO L231 Difference]: Finished difference. Result has 482 places, 482 transitions, 1308 flow [2022-09-16 11:45:53,828 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1308, PETRI_PLACES=482, PETRI_TRANSITIONS=482} [2022-09-16 11:45:53,830 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 45 predicate places. [2022-09-16 11:45:53,830 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 482 transitions, 1308 flow [2022-09-16 11:45:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 418.8235294117647) internal successors, (7120), 17 states have internal predecessors, (7120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:45:53,860 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 11:45:54,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:54,048 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1670029993, now seen corresponding path program 1 times [2022-09-16 11:45:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245894119] [2022-09-16 11:45:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:54,107 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 11:45:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:54,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245894119] [2022-09-16 11:45:54,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245894119] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:54,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:45:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:45:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753411984] [2022-09-16 11:45:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:54,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:45:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:45:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:45:54,113 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 493 [2022-09-16 11:45:54,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 482 transitions, 1308 flow. Second operand has 4 states, 4 states have (on average 445.5) internal successors, (1782), 4 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:54,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 493 [2022-09-16 11:45:54,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:54,749 INFO L130 PetriNetUnfolder]: 253/4006 cut-off events. [2022-09-16 11:45:54,749 INFO L131 PetriNetUnfolder]: For 180/194 co-relation queries the response was YES. [2022-09-16 11:45:54,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4568 conditions, 4006 events. 253/4006 cut-off events. For 180/194 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 31476 event pairs, 0 based on Foata normal form. 0/3488 useless extension candidates. Maximal degree in co-relation 4485. Up to 204 conditions per place. [2022-09-16 11:45:54,797 INFO L137 encePairwiseOnDemand]: 480/493 looper letters, 40 selfloop transitions, 9 changer transitions 0/503 dead transitions. [2022-09-16 11:45:54,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 503 transitions, 1452 flow [2022-09-16 11:45:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:45:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:45:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2273 transitions. [2022-09-16 11:45:54,802 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9221095334685598 [2022-09-16 11:45:54,802 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2273 transitions. [2022-09-16 11:45:54,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2273 transitions. [2022-09-16 11:45:54,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:54,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2273 transitions. [2022-09-16 11:45:54,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 454.6) internal successors, (2273), 5 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 493.0) internal successors, (2958), 6 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,810 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 493.0) internal successors, (2958), 6 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,810 INFO L175 Difference]: Start difference. First operand has 482 places, 482 transitions, 1308 flow. Second operand 5 states and 2273 transitions. [2022-09-16 11:45:54,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 503 transitions, 1452 flow [2022-09-16 11:45:54,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 503 transitions, 1369 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-09-16 11:45:54,821 INFO L231 Difference]: Finished difference. Result has 475 places, 489 transitions, 1292 flow [2022-09-16 11:45:54,821 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1292, PETRI_PLACES=475, PETRI_TRANSITIONS=489} [2022-09-16 11:45:54,822 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 38 predicate places. [2022-09-16 11:45:54,822 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 489 transitions, 1292 flow [2022-09-16 11:45:54,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 445.5) internal successors, (1782), 4 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:54,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:54,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:54,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:45:54,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:54,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1749358889, now seen corresponding path program 1 times [2022-09-16 11:45:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:54,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197775047] [2022-09-16 11:45:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:54,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:54,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197775047] [2022-09-16 11:45:54,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197775047] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:54,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495979143] [2022-09-16 11:45:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:54,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:54,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:54,876 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 11:45:54,899 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 11:45:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:54,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:45:54,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:45:55,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:45:55,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495979143] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:45:55,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:45:55,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2022-09-16 11:45:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033579728] [2022-09-16 11:45:55,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:45:55,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:45:55,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:55,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:45:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:45:55,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 493 [2022-09-16 11:45:55,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 489 transitions, 1292 flow. Second operand has 9 states, 9 states have (on average 407.8888888888889) internal successors, (3671), 9 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:55,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:55,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 493 [2022-09-16 11:45:55,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:45:57,651 INFO L130 PetriNetUnfolder]: 1576/17652 cut-off events. [2022-09-16 11:45:57,651 INFO L131 PetriNetUnfolder]: For 660/660 co-relation queries the response was YES. [2022-09-16 11:45:57,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19995 conditions, 17652 events. 1576/17652 cut-off events. For 660/660 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 217788 event pairs, 420 based on Foata normal form. 0/14978 useless extension candidates. Maximal degree in co-relation 19906. Up to 865 conditions per place. [2022-09-16 11:45:57,767 INFO L137 encePairwiseOnDemand]: 480/493 looper letters, 149 selfloop transitions, 24 changer transitions 0/552 dead transitions. [2022-09-16 11:45:57,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 552 transitions, 1861 flow [2022-09-16 11:45:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:45:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:45:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 5364 transitions. [2022-09-16 11:45:57,773 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.836948041816196 [2022-09-16 11:45:57,773 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 5364 transitions. [2022-09-16 11:45:57,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 5364 transitions. [2022-09-16 11:45:57,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:45:57,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 5364 transitions. [2022-09-16 11:45:57,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 412.61538461538464) internal successors, (5364), 13 states have internal predecessors, (5364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:57,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 493.0) internal successors, (6902), 14 states have internal predecessors, (6902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:57,789 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 493.0) internal successors, (6902), 14 states have internal predecessors, (6902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:57,789 INFO L175 Difference]: Start difference. First operand has 475 places, 489 transitions, 1292 flow. Second operand 13 states and 5364 transitions. [2022-09-16 11:45:57,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 552 transitions, 1861 flow [2022-09-16 11:45:57,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 552 transitions, 1853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:45:57,801 INFO L231 Difference]: Finished difference. Result has 492 places, 495 transitions, 1379 flow [2022-09-16 11:45:57,802 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1379, PETRI_PLACES=492, PETRI_TRANSITIONS=495} [2022-09-16 11:45:57,803 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 55 predicate places. [2022-09-16 11:45:57,803 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 495 transitions, 1379 flow [2022-09-16 11:45:57,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 407.8888888888889) internal successors, (3671), 9 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:57,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:45:57,805 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:57,831 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 11:45:58,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:58,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:45:58,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:45:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash -577852367, now seen corresponding path program 1 times [2022-09-16 11:45:58,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:45:58,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266671248] [2022-09-16 11:45:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:58,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:45:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:45:58,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:45:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266671248] [2022-09-16 11:45:58,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266671248] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:45:58,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730255602] [2022-09-16 11:45:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:45:58,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:45:58,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:45:58,107 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 11:45:58,108 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 11:45:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:45:58,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:45:58,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:45:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:58,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:45:58,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:45:58,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730255602] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:45:58,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:45:58,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-09-16 11:45:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299488252] [2022-09-16 11:45:58,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:45:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:45:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:45:58,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:45:58,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:45:58,870 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 493 [2022-09-16 11:45:58,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 495 transitions, 1379 flow. Second operand has 25 states, 25 states have (on average 388.56) internal successors, (9714), 25 states have internal predecessors, (9714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:45:58,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:45:58,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 493 [2022-09-16 11:45:58,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:05,594 INFO L130 PetriNetUnfolder]: 3522/38725 cut-off events. [2022-09-16 11:46:05,594 INFO L131 PetriNetUnfolder]: For 1155/1155 co-relation queries the response was YES. [2022-09-16 11:46:05,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44006 conditions, 38725 events. 3522/38725 cut-off events. For 1155/1155 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 559081 event pairs, 945 based on Foata normal form. 35/32775 useless extension candidates. Maximal degree in co-relation 43911. Up to 630 conditions per place. [2022-09-16 11:46:05,870 INFO L137 encePairwiseOnDemand]: 460/493 looper letters, 238 selfloop transitions, 91 changer transitions 0/676 dead transitions. [2022-09-16 11:46:05,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 676 transitions, 2638 flow [2022-09-16 11:46:05,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-09-16 11:46:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-09-16 11:46:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 16386 transitions. [2022-09-16 11:46:05,887 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7913648217907853 [2022-09-16 11:46:05,888 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 16386 transitions. [2022-09-16 11:46:05,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 16386 transitions. [2022-09-16 11:46:05,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:05,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 16386 transitions. [2022-09-16 11:46:05,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 390.14285714285717) internal successors, (16386), 42 states have internal predecessors, (16386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 493.0) internal successors, (21199), 43 states have internal predecessors, (21199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,942 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 493.0) internal successors, (21199), 43 states have internal predecessors, (21199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,942 INFO L175 Difference]: Start difference. First operand has 492 places, 495 transitions, 1379 flow. Second operand 42 states and 16386 transitions. [2022-09-16 11:46:05,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 676 transitions, 2638 flow [2022-09-16 11:46:05,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 676 transitions, 2616 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:46:05,959 INFO L231 Difference]: Finished difference. Result has 543 places, 541 transitions, 1887 flow [2022-09-16 11:46:05,960 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1887, PETRI_PLACES=543, PETRI_TRANSITIONS=541} [2022-09-16 11:46:05,960 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 106 predicate places. [2022-09-16 11:46:05,960 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 541 transitions, 1887 flow [2022-09-16 11:46:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 388.56) internal successors, (9714), 25 states have internal predecessors, (9714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:05,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:05,962 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:05,988 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 11:46:06,186 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,SelfDestructingSolverStorable10 [2022-09-16 11:46:06,186 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:46:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -923200420, now seen corresponding path program 1 times [2022-09-16 11:46:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:06,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720494374] [2022-09-16 11:46:06,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:06,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:06,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:06,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720494374] [2022-09-16 11:46:06,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720494374] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:06,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088673376] [2022-09-16 11:46:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:06,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:06,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:46:06,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:46:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:06,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:46:06,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:06,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:06,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088673376] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:06,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:06,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:46:06,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367845496] [2022-09-16 11:46:06,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:06,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:46:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:46:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:46:06,793 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 493 [2022-09-16 11:46:06,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 541 transitions, 1887 flow. Second operand has 32 states, 32 states have (on average 447.28125) internal successors, (14313), 32 states have internal predecessors, (14313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:06,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:06,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 493 [2022-09-16 11:46:06,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:13,619 INFO L130 PetriNetUnfolder]: 2281/34236 cut-off events. [2022-09-16 11:46:13,619 INFO L131 PetriNetUnfolder]: For 4569/4704 co-relation queries the response was YES. [2022-09-16 11:46:13,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40164 conditions, 34236 events. 2281/34236 cut-off events. For 4569/4704 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 447613 event pairs, 0 based on Foata normal form. 24/29805 useless extension candidates. Maximal degree in co-relation 40056. Up to 376 conditions per place. [2022-09-16 11:46:13,948 INFO L137 encePairwiseOnDemand]: 481/493 looper letters, 231 selfloop transitions, 116 changer transitions 0/804 dead transitions. [2022-09-16 11:46:13,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 804 transitions, 3826 flow [2022-09-16 11:46:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:46:13,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-16 11:46:13,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 19861 transitions. [2022-09-16 11:46:13,963 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9155910012907984 [2022-09-16 11:46:13,963 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 19861 transitions. [2022-09-16 11:46:13,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 19861 transitions. [2022-09-16 11:46:13,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:13,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 19861 transitions. [2022-09-16 11:46:13,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 451.3863636363636) internal successors, (19861), 44 states have internal predecessors, (19861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:14,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 493.0) internal successors, (22185), 45 states have internal predecessors, (22185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:14,009 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 493.0) internal successors, (22185), 45 states have internal predecessors, (22185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:14,009 INFO L175 Difference]: Start difference. First operand has 543 places, 541 transitions, 1887 flow. Second operand 44 states and 19861 transitions. [2022-09-16 11:46:14,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 804 transitions, 3826 flow [2022-09-16 11:46:14,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 804 transitions, 3701 flow, removed 16 selfloop flow, removed 13 redundant places. [2022-09-16 11:46:14,052 INFO L231 Difference]: Finished difference. Result has 582 places, 609 transitions, 2597 flow [2022-09-16 11:46:14,052 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=1792, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2597, PETRI_PLACES=582, PETRI_TRANSITIONS=609} [2022-09-16 11:46:14,053 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 145 predicate places. [2022-09-16 11:46:14,054 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 609 transitions, 2597 flow [2022-09-16 11:46:14,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 447.28125) internal successors, (14313), 32 states have internal predecessors, (14313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:14,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:14,056 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:14,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:14,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:14,272 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:46:14,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2075182353, now seen corresponding path program 1 times [2022-09-16 11:46:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:14,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730112545] [2022-09-16 11:46:14,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:14,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:14,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:46:14,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:14,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730112545] [2022-09-16 11:46:14,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730112545] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:14,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945718679] [2022-09-16 11:46:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:14,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:14,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:14,333 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:46:14,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:46:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:14,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:46:14,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:46:14,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:46:14,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945718679] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:14,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:46:14,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:46:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507913405] [2022-09-16 11:46:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:14,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:46:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:46:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:46:14,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 444 out of 493 [2022-09-16 11:46:14,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 609 transitions, 2597 flow. Second operand has 6 states, 6 states have (on average 446.3333333333333) internal successors, (2678), 6 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:14,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:14,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 444 of 493 [2022-09-16 11:46:14,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:21,129 INFO L130 PetriNetUnfolder]: 2281/34116 cut-off events. [2022-09-16 11:46:21,130 INFO L131 PetriNetUnfolder]: For 4743/4878 co-relation queries the response was YES. [2022-09-16 11:46:21,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40875 conditions, 34116 events. 2281/34116 cut-off events. For 4743/4878 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 445709 event pairs, 0 based on Foata normal form. 120/29781 useless extension candidates. Maximal degree in co-relation 40758. Up to 930 conditions per place. [2022-09-16 11:46:21,440 INFO L137 encePairwiseOnDemand]: 482/493 looper letters, 43 selfloop transitions, 33 changer transitions 0/616 dead transitions. [2022-09-16 11:46:21,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 616 transitions, 2743 flow [2022-09-16 11:46:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:46:21,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:46:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3157 transitions. [2022-09-16 11:46:21,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9148073022312373 [2022-09-16 11:46:21,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3157 transitions. [2022-09-16 11:46:21,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3157 transitions. [2022-09-16 11:46:21,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:21,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3157 transitions. [2022-09-16 11:46:21,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 451.0) internal successors, (3157), 7 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:21,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 493.0) internal successors, (3944), 8 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:21,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 493.0) internal successors, (3944), 8 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:21,450 INFO L175 Difference]: Start difference. First operand has 582 places, 609 transitions, 2597 flow. Second operand 7 states and 3157 transitions. [2022-09-16 11:46:21,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 616 transitions, 2743 flow [2022-09-16 11:46:21,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 616 transitions, 2660 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-09-16 11:46:21,490 INFO L231 Difference]: Finished difference. Result has 571 places, 604 transitions, 2542 flow [2022-09-16 11:46:21,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=2476, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2542, PETRI_PLACES=571, PETRI_TRANSITIONS=604} [2022-09-16 11:46:21,491 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 134 predicate places. [2022-09-16 11:46:21,491 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 604 transitions, 2542 flow [2022-09-16 11:46:21,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 446.3333333333333) internal successors, (2678), 6 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:21,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:21,492 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:21,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:21,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:21,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:46:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 316228165, now seen corresponding path program 2 times [2022-09-16 11:46:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:21,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020637621] [2022-09-16 11:46:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:46:21,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:21,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020637621] [2022-09-16 11:46:21,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020637621] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:46:21,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966243366] [2022-09-16 11:46:21,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:46:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:46:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:46:21,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:46:21,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:46:21,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:46:21,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:46:21,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:46:21,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:46:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:46:22,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:46:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:46:22,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966243366] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:46:22,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:46:22,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 22 [2022-09-16 11:46:22,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095209095] [2022-09-16 11:46:22,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:46:22,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 11:46:22,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:22,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 11:46:22,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:46:22,338 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 493 [2022-09-16 11:46:22,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 604 transitions, 2542 flow. Second operand has 22 states, 22 states have (on average 388.8181818181818) internal successors, (8554), 22 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:22,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:22,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 493 [2022-09-16 11:46:22,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:46:44,141 INFO L130 PetriNetUnfolder]: 10066/110393 cut-off events. [2022-09-16 11:46:44,141 INFO L131 PetriNetUnfolder]: For 9147/9147 co-relation queries the response was YES. [2022-09-16 11:46:45,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128547 conditions, 110393 events. 10066/110393 cut-off events. For 9147/9147 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 1779878 event pairs, 2700 based on Foata normal form. 30/93503 useless extension candidates. Maximal degree in co-relation 128425. Up to 3444 conditions per place. [2022-09-16 11:46:45,707 INFO L137 encePairwiseOnDemand]: 459/493 looper letters, 292 selfloop transitions, 237 changer transitions 0/876 dead transitions. [2022-09-16 11:46:45,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 876 transitions, 5073 flow [2022-09-16 11:46:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-09-16 11:46:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-09-16 11:46:45,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 29473 transitions. [2022-09-16 11:46:45,731 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7866179139532401 [2022-09-16 11:46:45,731 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 29473 transitions. [2022-09-16 11:46:45,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 29473 transitions. [2022-09-16 11:46:45,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:46:45,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 29473 transitions. [2022-09-16 11:46:45,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 387.80263157894734) internal successors, (29473), 76 states have internal predecessors, (29473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:45,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 493.0) internal successors, (37961), 77 states have internal predecessors, (37961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:45,940 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 493.0) internal successors, (37961), 77 states have internal predecessors, (37961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:45,940 INFO L175 Difference]: Start difference. First operand has 571 places, 604 transitions, 2542 flow. Second operand 76 states and 29473 transitions. [2022-09-16 11:46:45,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 876 transitions, 5073 flow [2022-09-16 11:46:45,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 876 transitions, 4912 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-09-16 11:46:46,001 INFO L231 Difference]: Finished difference. Result has 649 places, 735 transitions, 4208 flow [2022-09-16 11:46:46,002 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=2469, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=4208, PETRI_PLACES=649, PETRI_TRANSITIONS=735} [2022-09-16 11:46:46,003 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 212 predicate places. [2022-09-16 11:46:46,003 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 735 transitions, 4208 flow [2022-09-16 11:46:46,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 388.8181818181818) internal successors, (8554), 22 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:46:46,004 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:46,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:46:46,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:46:46,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:46:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:46:46,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1904943780, now seen corresponding path program 1 times [2022-09-16 11:46:46,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:46:46,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134877462] [2022-09-16 11:46:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:46:46,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:46:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:46:46,306 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-09-16 11:46:46,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:46:46,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134877462] [2022-09-16 11:46:46,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134877462] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:46:46,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:46:46,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:46:46,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161568036] [2022-09-16 11:46:46,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:46:46,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:46:46,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:46:46,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:46:46,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:46:46,310 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 493 [2022-09-16 11:46:46,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 735 transitions, 4208 flow. Second operand has 9 states, 9 states have (on average 408.6666666666667) internal successors, (3678), 9 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:46:46,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:46:46,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 493 [2022-09-16 11:46:46,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:47:09,901 INFO L130 PetriNetUnfolder]: 10654/118109 cut-off events. [2022-09-16 11:47:09,901 INFO L131 PetriNetUnfolder]: For 14194/14194 co-relation queries the response was YES. [2022-09-16 11:47:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136711 conditions, 118109 events. 10654/118109 cut-off events. For 14194/14194 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 1918917 event pairs, 2580 based on Foata normal form. 4/99365 useless extension candidates. Maximal degree in co-relation 136578. Up to 9386 conditions per place. [2022-09-16 11:47:11,769 INFO L137 encePairwiseOnDemand]: 484/493 looper letters, 315 selfloop transitions, 25 changer transitions 0/764 dead transitions. [2022-09-16 11:47:11,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 764 transitions, 5006 flow [2022-09-16 11:47:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:47:11,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:47:11,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3736 transitions. [2022-09-16 11:47:11,772 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.842010367365337 [2022-09-16 11:47:11,772 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3736 transitions. [2022-09-16 11:47:11,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3736 transitions. [2022-09-16 11:47:11,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:47:11,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3736 transitions. [2022-09-16 11:47:11,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 415.1111111111111) internal successors, (3736), 9 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:11,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 493.0) internal successors, (4930), 10 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:11,777 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 493.0) internal successors, (4930), 10 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:11,777 INFO L175 Difference]: Start difference. First operand has 649 places, 735 transitions, 4208 flow. Second operand 9 states and 3736 transitions. [2022-09-16 11:47:11,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 764 transitions, 5006 flow [2022-09-16 11:47:11,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 764 transitions, 4833 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-09-16 11:47:11,857 INFO L231 Difference]: Finished difference. Result has 640 places, 725 transitions, 4047 flow [2022-09-16 11:47:11,858 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=493, PETRI_DIFFERENCE_MINUEND_FLOW=3944, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=696, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4047, PETRI_PLACES=640, PETRI_TRANSITIONS=725} [2022-09-16 11:47:11,858 INFO L287 CegarLoopForPetriNet]: 437 programPoint places, 203 predicate places. [2022-09-16 11:47:11,858 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 725 transitions, 4047 flow [2022-09-16 11:47:11,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 408.6666666666667) internal successors, (3678), 9 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:11,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:47:11,859 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:11,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:47:11,860 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:47:11,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:47:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash 787438416, now seen corresponding path program 1 times [2022-09-16 11:47:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:47:11,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314529786] [2022-09-16 11:47:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:11,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:47:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:47:11,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:47:11,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314529786] [2022-09-16 11:47:11,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314529786] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:47:11,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442384496] [2022-09-16 11:47:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:47:11,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:47:11,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:47:11,987 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:47:11,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:47:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:47:12,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:47:12,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:47:12,259 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:47:12,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:47:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:47:12,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442384496] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:47:12,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:47:12,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-09-16 11:47:12,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3322017] [2022-09-16 11:47:12,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:47:12,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:47:12,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:47:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:47:12,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:47:12,495 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 493 [2022-09-16 11:47:12,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 725 transitions, 4047 flow. Second operand has 26 states, 26 states have (on average 387.84615384615387) internal successors, (10084), 26 states have internal predecessors, (10084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:47:12,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:47:12,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 493 [2022-09-16 11:47:12,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand