/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:39:00,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:39:00,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:39:00,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:39:00,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:39:00,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:39:00,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:39:00,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:39:00,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:39:00,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:39:00,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:39:00,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:39:00,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:39:00,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:39:00,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:39:00,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:39:00,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:39:00,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:39:00,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:39:00,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:39:00,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:39:00,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:39:00,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:39:00,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:39:00,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:39:00,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:39:00,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:39:00,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:39:00,715 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 11:39:00,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:39:00,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:39:00,754 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:39:00,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:39:00,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:39:00,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:39:00,755 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:39:00,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:39:00,755 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:39:00,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:39:00,756 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:39:00,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:39:00,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:39:00,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:39:00,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:39:00,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:39:00,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:39:00,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:00,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:39:00,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:39:00,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:39:00,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:39:00,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:39:00,759 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:39:00,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:39:00,759 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:39:00,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:39:00,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:39:00,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:39:00,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:39:01,000 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:39:01,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-09-16 11:39:01,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963babe54/9ba266ea3323441b80ba8849ad55c0b4/FLAGa15addebe [2022-09-16 11:39:01,505 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:39:01,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i [2022-09-16 11:39:01,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963babe54/9ba266ea3323441b80ba8849ad55c0b4/FLAGa15addebe [2022-09-16 11:39:01,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/963babe54/9ba266ea3323441b80ba8849ad55c0b4 [2022-09-16 11:39:01,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:39:01,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:39:01,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:01,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:39:01,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:39:01,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:01" (1/1) ... [2022-09-16 11:39:01,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ada1917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:01, skipping insertion in model container [2022-09-16 11:39:01,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:01" (1/1) ... [2022-09-16 11:39:01,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:39:01,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:39:02,037 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:39:02,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-09-16 11:39:02,239 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-09-16 11:39:02,240 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-09-16 11:39:02,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:02,257 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:39:02,273 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:39:02,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-09-16 11:39:02,306 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-09-16 11:39:02,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-09-16 11:39:02,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:02,359 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:39:02,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02 WrapperNode [2022-09-16 11:39:02,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:02,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:02,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:39:02,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:39:02,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,433 INFO L138 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2022-09-16 11:39:02,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:02,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:39:02,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:39:02,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:39:02,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:39:02,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:39:02,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:39:02,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:39:02,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (1/1) ... [2022-09-16 11:39:02,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:02,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:02,493 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 11:39:02,501 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 11:39:02,544 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-09-16 11:39:02,546 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:39:02,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:39:02,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:39:02,548 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 11:39:02,701 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:39:02,702 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:39:02,936 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:39:02,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:39:02,949 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:39:02,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:02 BoogieIcfgContainer [2022-09-16 11:39:02,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:39:02,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:39:02,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:39:02,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:39:02,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:39:01" (1/3) ... [2022-09-16 11:39:02,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ccd2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:02, skipping insertion in model container [2022-09-16 11:39:02,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:02" (2/3) ... [2022-09-16 11:39:02,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ccd2dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:02, skipping insertion in model container [2022-09-16 11:39:02,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:02" (3/3) ... [2022-09-16 11:39:02,969 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-09-16 11:39:02,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:39:02,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-09-16 11:39:02,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:39:03,111 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-16 11:39:03,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 183 transitions, 374 flow [2022-09-16 11:39:03,242 INFO L130 PetriNetUnfolder]: 10/182 cut-off events. [2022-09-16 11:39:03,242 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:39:03,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 182 events. 10/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 356 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-09-16 11:39:03,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 183 transitions, 374 flow [2022-09-16 11:39:03,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 173 transitions, 349 flow [2022-09-16 11:39:03,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:39:03,285 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;@7b1e853e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:39:03,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-09-16 11:39:03,343 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 11:39:03,344 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:03,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:03,345 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] [2022-09-16 11:39:03,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 327290907, now seen corresponding path program 1 times [2022-09-16 11:39:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:03,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360703187] [2022-09-16 11:39:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:03,659 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 11:39:03,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:03,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360703187] [2022-09-16 11:39:03,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360703187] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:03,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:03,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:03,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162128474] [2022-09-16 11:39:03,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:03,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:03,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:03,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:03,726 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 183 [2022-09-16 11:39:03,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 173 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:03,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:03,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 183 [2022-09-16 11:39:03,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:03,873 INFO L130 PetriNetUnfolder]: 5/202 cut-off events. [2022-09-16 11:39:03,874 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-16 11:39:03,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 202 events. 5/202 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 308 event pairs, 0 based on Foata normal form. 72/248 useless extension candidates. Maximal degree in co-relation 193. Up to 17 conditions per place. [2022-09-16 11:39:03,882 INFO L137 encePairwiseOnDemand]: 170/183 looper letters, 22 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-09-16 11:39:03,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 175 transitions, 401 flow [2022-09-16 11:39:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:03,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:03,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2022-09-16 11:39:03,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9489981785063752 [2022-09-16 11:39:03,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 521 transitions. [2022-09-16 11:39:03,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 521 transitions. [2022-09-16 11:39:03,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:03,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 521 transitions. [2022-09-16 11:39:03,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:03,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:03,928 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:03,930 INFO L175 Difference]: Start difference. First operand has 167 places, 173 transitions, 349 flow. Second operand 3 states and 521 transitions. [2022-09-16 11:39:03,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 175 transitions, 401 flow [2022-09-16 11:39:03,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 175 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:03,940 INFO L231 Difference]: Finished difference. Result has 169 places, 168 transitions, 356 flow [2022-09-16 11:39:03,942 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=169, PETRI_TRANSITIONS=168} [2022-09-16 11:39:03,945 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 2 predicate places. [2022-09-16 11:39:03,945 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 168 transitions, 356 flow [2022-09-16 11:39:03,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:03,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:03,946 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] [2022-09-16 11:39:03,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:39:03,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:03,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash -591645628, now seen corresponding path program 1 times [2022-09-16 11:39:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361608229] [2022-09-16 11:39:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:04,335 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 11:39:04,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:04,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361608229] [2022-09-16 11:39:04,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361608229] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:04,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:04,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-09-16 11:39:04,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056662508] [2022-09-16 11:39:04,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:04,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:39:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:39:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:39:04,346 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 183 [2022-09-16 11:39:04,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 168 transitions, 356 flow. Second operand has 15 states, 15 states have (on average 122.06666666666666) internal successors, (1831), 15 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:04,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:04,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 183 [2022-09-16 11:39:04,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:05,732 INFO L130 PetriNetUnfolder]: 658/3606 cut-off events. [2022-09-16 11:39:05,732 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-16 11:39:05,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4846 conditions, 3606 events. 658/3606 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 31322 event pairs, 76 based on Foata normal form. 0/3109 useless extension candidates. Maximal degree in co-relation 4786. Up to 772 conditions per place. [2022-09-16 11:39:05,753 INFO L137 encePairwiseOnDemand]: 166/183 looper letters, 117 selfloop transitions, 23 changer transitions 0/256 dead transitions. [2022-09-16 11:39:05,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 256 transitions, 812 flow [2022-09-16 11:39:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:39:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:39:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1824 transitions. [2022-09-16 11:39:05,759 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.711943793911007 [2022-09-16 11:39:05,759 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1824 transitions. [2022-09-16 11:39:05,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1824 transitions. [2022-09-16 11:39:05,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:05,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1824 transitions. [2022-09-16 11:39:05,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 130.28571428571428) internal successors, (1824), 14 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:05,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:05,771 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:05,772 INFO L175 Difference]: Start difference. First operand has 169 places, 168 transitions, 356 flow. Second operand 14 states and 1824 transitions. [2022-09-16 11:39:05,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 256 transitions, 812 flow [2022-09-16 11:39:05,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 256 transitions, 810 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:05,778 INFO L231 Difference]: Finished difference. Result has 189 places, 187 transitions, 496 flow [2022-09-16 11:39:05,779 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=496, PETRI_PLACES=189, PETRI_TRANSITIONS=187} [2022-09-16 11:39:05,779 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 22 predicate places. [2022-09-16 11:39:05,780 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 187 transitions, 496 flow [2022-09-16 11:39:05,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 122.06666666666666) internal successors, (1831), 15 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:05,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:05,781 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] [2022-09-16 11:39:05,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:39:05,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:05,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1454019110, now seen corresponding path program 1 times [2022-09-16 11:39:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:05,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130229143] [2022-09-16 11:39:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:05,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:05,930 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 11:39:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:05,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130229143] [2022-09-16 11:39:05,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130229143] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:05,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:05,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657716514] [2022-09-16 11:39:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:05,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:05,936 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 183 [2022-09-16 11:39:05,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 187 transitions, 496 flow. Second operand has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:05,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:05,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 183 [2022-09-16 11:39:05,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:06,815 INFO L130 PetriNetUnfolder]: 1448/4843 cut-off events. [2022-09-16 11:39:06,816 INFO L131 PetriNetUnfolder]: For 461/461 co-relation queries the response was YES. [2022-09-16 11:39:06,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 4843 events. 1448/4843 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 39513 event pairs, 283 based on Foata normal form. 8/4184 useless extension candidates. Maximal degree in co-relation 8149. Up to 488 conditions per place. [2022-09-16 11:39:06,851 INFO L137 encePairwiseOnDemand]: 167/183 looper letters, 228 selfloop transitions, 28 changer transitions 0/366 dead transitions. [2022-09-16 11:39:06,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 366 transitions, 1473 flow [2022-09-16 11:39:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:39:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:39:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1974 transitions. [2022-09-16 11:39:06,857 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7191256830601093 [2022-09-16 11:39:06,857 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1974 transitions. [2022-09-16 11:39:06,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1974 transitions. [2022-09-16 11:39:06,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:06,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1974 transitions. [2022-09-16 11:39:06,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 131.6) internal successors, (1974), 15 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:06,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:06,917 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:06,917 INFO L175 Difference]: Start difference. First operand has 189 places, 187 transitions, 496 flow. Second operand 15 states and 1974 transitions. [2022-09-16 11:39:06,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 366 transitions, 1473 flow [2022-09-16 11:39:06,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 366 transitions, 1466 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:39:06,933 INFO L231 Difference]: Finished difference. Result has 204 places, 207 transitions, 668 flow [2022-09-16 11:39:06,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=668, PETRI_PLACES=204, PETRI_TRANSITIONS=207} [2022-09-16 11:39:06,935 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 37 predicate places. [2022-09-16 11:39:06,936 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 207 transitions, 668 flow [2022-09-16 11:39:06,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.0) internal successors, (1309), 11 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:06,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:06,937 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] [2022-09-16 11:39:06,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:39:06,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:06,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:06,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2124919143, now seen corresponding path program 1 times [2022-09-16 11:39:06,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:06,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492771150] [2022-09-16 11:39:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:06,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:07,143 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 11:39:07,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:07,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492771150] [2022-09-16 11:39:07,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492771150] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:07,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:07,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:07,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209237111] [2022-09-16 11:39:07,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:07,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:07,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:07,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:07,151 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 183 [2022-09-16 11:39:07,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 207 transitions, 668 flow. Second operand has 11 states, 11 states have (on average 119.0909090909091) internal successors, (1310), 11 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:07,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:07,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 183 [2022-09-16 11:39:07,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:08,297 INFO L130 PetriNetUnfolder]: 1588/5819 cut-off events. [2022-09-16 11:39:08,297 INFO L131 PetriNetUnfolder]: For 1886/1898 co-relation queries the response was YES. [2022-09-16 11:39:08,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10569 conditions, 5819 events. 1588/5819 cut-off events. For 1886/1898 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 50342 event pairs, 450 based on Foata normal form. 10/5027 useless extension candidates. Maximal degree in co-relation 10503. Up to 728 conditions per place. [2022-09-16 11:39:08,343 INFO L137 encePairwiseOnDemand]: 165/183 looper letters, 228 selfloop transitions, 36 changer transitions 0/374 dead transitions. [2022-09-16 11:39:08,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 374 transitions, 1716 flow [2022-09-16 11:39:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:39:08,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:39:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1974 transitions. [2022-09-16 11:39:08,348 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7191256830601093 [2022-09-16 11:39:08,348 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1974 transitions. [2022-09-16 11:39:08,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1974 transitions. [2022-09-16 11:39:08,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:08,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1974 transitions. [2022-09-16 11:39:08,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 131.6) internal successors, (1974), 15 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,360 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,360 INFO L175 Difference]: Start difference. First operand has 204 places, 207 transitions, 668 flow. Second operand 15 states and 1974 transitions. [2022-09-16 11:39:08,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 374 transitions, 1716 flow [2022-09-16 11:39:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 374 transitions, 1710 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:08,373 INFO L231 Difference]: Finished difference. Result has 222 places, 218 transitions, 849 flow [2022-09-16 11:39:08,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=849, PETRI_PLACES=222, PETRI_TRANSITIONS=218} [2022-09-16 11:39:08,378 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 55 predicate places. [2022-09-16 11:39:08,379 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 218 transitions, 849 flow [2022-09-16 11:39:08,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.0909090909091) internal successors, (1310), 11 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:08,384 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] [2022-09-16 11:39:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:39:08,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1273658638, now seen corresponding path program 1 times [2022-09-16 11:39:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395776797] [2022-09-16 11:39:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:08,646 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 11:39:08,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:08,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395776797] [2022-09-16 11:39:08,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395776797] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:08,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:08,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-16 11:39:08,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138477543] [2022-09-16 11:39:08,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:08,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:39:08,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:08,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:39:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:39:08,650 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 183 [2022-09-16 11:39:08,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 218 transitions, 849 flow. Second operand has 18 states, 18 states have (on average 119.05555555555556) internal successors, (2143), 18 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:08,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:08,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 183 [2022-09-16 11:39:08,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:10,319 INFO L130 PetriNetUnfolder]: 1219/6099 cut-off events. [2022-09-16 11:39:10,319 INFO L131 PetriNetUnfolder]: For 5287/5540 co-relation queries the response was YES. [2022-09-16 11:39:10,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12195 conditions, 6099 events. 1219/6099 cut-off events. For 5287/5540 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 53885 event pairs, 360 based on Foata normal form. 39/5580 useless extension candidates. Maximal degree in co-relation 12114. Up to 1938 conditions per place. [2022-09-16 11:39:10,366 INFO L137 encePairwiseOnDemand]: 159/183 looper letters, 139 selfloop transitions, 39 changer transitions 0/315 dead transitions. [2022-09-16 11:39:10,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 315 transitions, 1709 flow [2022-09-16 11:39:10,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:39:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:39:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2131 transitions. [2022-09-16 11:39:10,372 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6849887495981999 [2022-09-16 11:39:10,372 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2131 transitions. [2022-09-16 11:39:10,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2131 transitions. [2022-09-16 11:39:10,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:10,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2131 transitions. [2022-09-16 11:39:10,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.3529411764706) internal successors, (2131), 17 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:10,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:10,383 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:10,383 INFO L175 Difference]: Start difference. First operand has 222 places, 218 transitions, 849 flow. Second operand 17 states and 2131 transitions. [2022-09-16 11:39:10,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 315 transitions, 1709 flow [2022-09-16 11:39:10,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 315 transitions, 1692 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-09-16 11:39:10,406 INFO L231 Difference]: Finished difference. Result has 243 places, 241 transitions, 1084 flow [2022-09-16 11:39:10,407 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1084, PETRI_PLACES=243, PETRI_TRANSITIONS=241} [2022-09-16 11:39:10,408 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 76 predicate places. [2022-09-16 11:39:10,408 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 241 transitions, 1084 flow [2022-09-16 11:39:10,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 119.05555555555556) internal successors, (2143), 18 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:10,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:10,409 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] [2022-09-16 11:39:10,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:39:10,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:10,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:10,410 INFO L85 PathProgramCache]: Analyzing trace with hash 828712617, now seen corresponding path program 1 times [2022-09-16 11:39:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:10,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485762084] [2022-09-16 11:39:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:10,630 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 11:39:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:10,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485762084] [2022-09-16 11:39:10,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485762084] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:10,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:10,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-16 11:39:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995803816] [2022-09-16 11:39:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:39:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:39:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:39:10,634 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 183 [2022-09-16 11:39:10,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 241 transitions, 1084 flow. Second operand has 18 states, 18 states have (on average 119.11111111111111) internal successors, (2144), 18 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:10,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:10,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 183 [2022-09-16 11:39:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:12,743 INFO L130 PetriNetUnfolder]: 1482/7839 cut-off events. [2022-09-16 11:39:12,744 INFO L131 PetriNetUnfolder]: For 7220/7732 co-relation queries the response was YES. [2022-09-16 11:39:12,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15838 conditions, 7839 events. 1482/7839 cut-off events. For 7220/7732 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 74535 event pairs, 149 based on Foata normal form. 86/7307 useless extension candidates. Maximal degree in co-relation 15738. Up to 1199 conditions per place. [2022-09-16 11:39:12,817 INFO L137 encePairwiseOnDemand]: 157/183 looper letters, 169 selfloop transitions, 52 changer transitions 0/358 dead transitions. [2022-09-16 11:39:12,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 358 transitions, 2207 flow [2022-09-16 11:39:12,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-16 11:39:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-16 11:39:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2390 transitions. [2022-09-16 11:39:12,841 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6873741731377624 [2022-09-16 11:39:12,842 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2390 transitions. [2022-09-16 11:39:12,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2390 transitions. [2022-09-16 11:39:12,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:12,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2390 transitions. [2022-09-16 11:39:12,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 125.78947368421052) internal successors, (2390), 19 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:12,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:12,854 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:12,854 INFO L175 Difference]: Start difference. First operand has 243 places, 241 transitions, 1084 flow. Second operand 19 states and 2390 transitions. [2022-09-16 11:39:12,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 358 transitions, 2207 flow [2022-09-16 11:39:12,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 358 transitions, 2185 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:39:12,884 INFO L231 Difference]: Finished difference. Result has 258 places, 246 transitions, 1230 flow [2022-09-16 11:39:12,884 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1230, PETRI_PLACES=258, PETRI_TRANSITIONS=246} [2022-09-16 11:39:12,885 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 91 predicate places. [2022-09-16 11:39:12,885 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 246 transitions, 1230 flow [2022-09-16 11:39:12,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 119.11111111111111) internal successors, (2144), 18 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:12,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:12,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:12,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:39:12,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:12,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:12,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2142545739, now seen corresponding path program 1 times [2022-09-16 11:39:12,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:12,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197585245] [2022-09-16 11:39:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:12,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:39:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:12,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197585245] [2022-09-16 11:39:12,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197585245] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:12,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:12,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:12,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483821615] [2022-09-16 11:39:12,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:12,927 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 183 [2022-09-16 11:39:12,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 246 transitions, 1230 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:12,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:12,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 183 [2022-09-16 11:39:12,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:13,391 INFO L130 PetriNetUnfolder]: 178/3530 cut-off events. [2022-09-16 11:39:13,391 INFO L131 PetriNetUnfolder]: For 1711/1763 co-relation queries the response was YES. [2022-09-16 11:39:13,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6041 conditions, 3530 events. 178/3530 cut-off events. For 1711/1763 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 29266 event pairs, 9 based on Foata normal form. 38/3240 useless extension candidates. Maximal degree in co-relation 5958. Up to 201 conditions per place. [2022-09-16 11:39:13,419 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 15 selfloop transitions, 4 changer transitions 0/245 dead transitions. [2022-09-16 11:39:13,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 245 transitions, 1262 flow [2022-09-16 11:39:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2022-09-16 11:39:13,421 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9052823315118397 [2022-09-16 11:39:13,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2022-09-16 11:39:13,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2022-09-16 11:39:13,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:13,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2022-09-16 11:39:13,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:13,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:13,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:13,425 INFO L175 Difference]: Start difference. First operand has 258 places, 246 transitions, 1230 flow. Second operand 3 states and 497 transitions. [2022-09-16 11:39:13,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 245 transitions, 1262 flow [2022-09-16 11:39:13,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 245 transitions, 1195 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-09-16 11:39:13,441 INFO L231 Difference]: Finished difference. Result has 244 places, 245 transitions, 1171 flow [2022-09-16 11:39:13,441 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1171, PETRI_PLACES=244, PETRI_TRANSITIONS=245} [2022-09-16 11:39:13,442 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 77 predicate places. [2022-09-16 11:39:13,442 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 245 transitions, 1171 flow [2022-09-16 11:39:13,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:13,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:13,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:13,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:39:13,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:13,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:13,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1994408751, now seen corresponding path program 1 times [2022-09-16 11:39:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:13,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060295854] [2022-09-16 11:39:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:13,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:13,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060295854] [2022-09-16 11:39:13,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060295854] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:39:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197296051] [2022-09-16 11:39:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:13,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:39:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:13,545 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 11:39:13,572 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 11:39:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:13,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2022-09-16 11:39:13,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:39:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:13,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:39:13,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197296051] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:13,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:39:13,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-09-16 11:39:13,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074968083] [2022-09-16 11:39:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:13,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:39:13,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:39:13,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:39:13,827 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 183 [2022-09-16 11:39:13,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 245 transitions, 1171 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:13,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:13,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 183 [2022-09-16 11:39:13,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:14,305 INFO L130 PetriNetUnfolder]: 178/3496 cut-off events. [2022-09-16 11:39:14,306 INFO L131 PetriNetUnfolder]: For 1631/1679 co-relation queries the response was YES. [2022-09-16 11:39:14,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5948 conditions, 3496 events. 178/3496 cut-off events. For 1631/1679 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 28816 event pairs, 9 based on Foata normal form. 38/3206 useless extension candidates. Maximal degree in co-relation 5871. Up to 171 conditions per place. [2022-09-16 11:39:14,327 INFO L137 encePairwiseOnDemand]: 179/183 looper letters, 20 selfloop transitions, 2 changer transitions 0/248 dead transitions. [2022-09-16 11:39:14,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 248 transitions, 1217 flow [2022-09-16 11:39:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:39:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:39:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 662 transitions. [2022-09-16 11:39:14,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9043715846994536 [2022-09-16 11:39:14,330 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 662 transitions. [2022-09-16 11:39:14,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 662 transitions. [2022-09-16 11:39:14,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:14,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 662 transitions. [2022-09-16 11:39:14,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:14,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:14,334 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:14,334 INFO L175 Difference]: Start difference. First operand has 244 places, 245 transitions, 1171 flow. Second operand 4 states and 662 transitions. [2022-09-16 11:39:14,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 248 transitions, 1217 flow [2022-09-16 11:39:14,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 248 transitions, 1213 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:14,349 INFO L231 Difference]: Finished difference. Result has 244 places, 243 transitions, 1163 flow [2022-09-16 11:39:14,350 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1163, PETRI_PLACES=244, PETRI_TRANSITIONS=243} [2022-09-16 11:39:14,350 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 77 predicate places. [2022-09-16 11:39:14,350 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 243 transitions, 1163 flow [2022-09-16 11:39:14,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:14,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:14,351 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] [2022-09-16 11:39:14,375 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 11:39:14,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:39:14,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1702021644, now seen corresponding path program 1 times [2022-09-16 11:39:14,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:14,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604382809] [2022-09-16 11:39:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:14,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:14,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:14,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604382809] [2022-09-16 11:39:14,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604382809] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:14,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:14,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:14,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376733624] [2022-09-16 11:39:14,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:14,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:14,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:14,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:14,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:14,626 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 183 [2022-09-16 11:39:14,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 243 transitions, 1163 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:14,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:14,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 183 [2022-09-16 11:39:14,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:15,128 INFO L130 PetriNetUnfolder]: 191/3808 cut-off events. [2022-09-16 11:39:15,128 INFO L131 PetriNetUnfolder]: For 1601/1675 co-relation queries the response was YES. [2022-09-16 11:39:15,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6453 conditions, 3808 events. 191/3808 cut-off events. For 1601/1675 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 32926 event pairs, 13 based on Foata normal form. 5/3446 useless extension candidates. Maximal degree in co-relation 6375. Up to 308 conditions per place. [2022-09-16 11:39:15,162 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 15 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2022-09-16 11:39:15,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 246 transitions, 1191 flow [2022-09-16 11:39:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-09-16 11:39:15,164 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9380692167577414 [2022-09-16 11:39:15,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-09-16 11:39:15,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-09-16 11:39:15,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:15,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-09-16 11:39:15,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,167 INFO L175 Difference]: Start difference. First operand has 244 places, 243 transitions, 1163 flow. Second operand 3 states and 515 transitions. [2022-09-16 11:39:15,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 246 transitions, 1191 flow [2022-09-16 11:39:15,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 1182 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-16 11:39:15,184 INFO L231 Difference]: Finished difference. Result has 245 places, 241 transitions, 1152 flow [2022-09-16 11:39:15,184 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1152, PETRI_PLACES=245, PETRI_TRANSITIONS=241} [2022-09-16 11:39:15,185 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 78 predicate places. [2022-09-16 11:39:15,185 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 241 transitions, 1152 flow [2022-09-16 11:39:15,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:15,186 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] [2022-09-16 11:39:15,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:39:15,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:15,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2058679112, now seen corresponding path program 1 times [2022-09-16 11:39:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:15,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126108849] [2022-09-16 11:39:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:15,226 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 11:39:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:15,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126108849] [2022-09-16 11:39:15,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126108849] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:15,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:15,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:15,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065770801] [2022-09-16 11:39:15,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:15,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:15,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:15,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:15,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:15,229 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 183 [2022-09-16 11:39:15,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 241 transitions, 1152 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:15,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 183 [2022-09-16 11:39:15,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:15,802 INFO L130 PetriNetUnfolder]: 191/3856 cut-off events. [2022-09-16 11:39:15,803 INFO L131 PetriNetUnfolder]: For 1568/1642 co-relation queries the response was YES. [2022-09-16 11:39:15,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6513 conditions, 3856 events. 191/3856 cut-off events. For 1568/1642 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 33515 event pairs, 13 based on Foata normal form. 5/3601 useless extension candidates. Maximal degree in co-relation 6434. Up to 277 conditions per place. [2022-09-16 11:39:15,850 INFO L137 encePairwiseOnDemand]: 178/183 looper letters, 13 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2022-09-16 11:39:15,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 246 transitions, 1192 flow [2022-09-16 11:39:15,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2022-09-16 11:39:15,853 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9398907103825137 [2022-09-16 11:39:15,853 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2022-09-16 11:39:15,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2022-09-16 11:39:15,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:15,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2022-09-16 11:39:15,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,856 INFO L175 Difference]: Start difference. First operand has 245 places, 241 transitions, 1152 flow. Second operand 3 states and 516 transitions. [2022-09-16 11:39:15,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 246 transitions, 1192 flow [2022-09-16 11:39:15,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 246 transitions, 1188 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:15,874 INFO L231 Difference]: Finished difference. Result has 247 places, 242 transitions, 1164 flow [2022-09-16 11:39:15,874 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1148, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1164, PETRI_PLACES=247, PETRI_TRANSITIONS=242} [2022-09-16 11:39:15,875 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 80 predicate places. [2022-09-16 11:39:15,875 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 242 transitions, 1164 flow [2022-09-16 11:39:15,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:15,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:15,876 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:39:15,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:39:15,876 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:15,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:15,876 INFO L85 PathProgramCache]: Analyzing trace with hash 557620084, now seen corresponding path program 1 times [2022-09-16 11:39:15,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:15,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689993213] [2022-09-16 11:39:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:15,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689993213] [2022-09-16 11:39:16,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689993213] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:39:16,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777886208] [2022-09-16 11:39:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:16,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:39:16,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:16,099 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 11:39:16,101 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 11:39:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:16,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 11:39:16,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:39:16,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-09-16 11:39:16,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-09-16 11:39:16,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:16,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:39:16,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-09-16 11:39:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:16,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777886208] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:39:16,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:39:16,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 22 [2022-09-16 11:39:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266509474] [2022-09-16 11:39:16,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:39:16,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:39:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:39:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:39:16,635 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 183 [2022-09-16 11:39:16,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 242 transitions, 1164 flow. Second operand has 23 states, 23 states have (on average 130.2608695652174) internal successors, (2996), 23 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:16,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:16,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 183 [2022-09-16 11:39:16,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:18,448 INFO L130 PetriNetUnfolder]: 1456/7986 cut-off events. [2022-09-16 11:39:18,449 INFO L131 PetriNetUnfolder]: For 6570/6696 co-relation queries the response was YES. [2022-09-16 11:39:18,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16468 conditions, 7986 events. 1456/7986 cut-off events. For 6570/6696 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 79380 event pairs, 295 based on Foata normal form. 65/7525 useless extension candidates. Maximal degree in co-relation 16371. Up to 839 conditions per place. [2022-09-16 11:39:18,532 INFO L137 encePairwiseOnDemand]: 166/183 looper letters, 176 selfloop transitions, 37 changer transitions 0/352 dead transitions. [2022-09-16 11:39:18,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 352 transitions, 2078 flow [2022-09-16 11:39:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:39:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:39:18,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2048 transitions. [2022-09-16 11:39:18,538 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7460837887067395 [2022-09-16 11:39:18,538 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2048 transitions. [2022-09-16 11:39:18,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2048 transitions. [2022-09-16 11:39:18,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:18,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2048 transitions. [2022-09-16 11:39:18,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 136.53333333333333) internal successors, (2048), 15 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:18,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:18,547 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:18,547 INFO L175 Difference]: Start difference. First operand has 247 places, 242 transitions, 1164 flow. Second operand 15 states and 2048 transitions. [2022-09-16 11:39:18,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 352 transitions, 2078 flow [2022-09-16 11:39:18,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 352 transitions, 2076 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:18,585 INFO L231 Difference]: Finished difference. Result has 264 places, 250 transitions, 1345 flow [2022-09-16 11:39:18,585 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1345, PETRI_PLACES=264, PETRI_TRANSITIONS=250} [2022-09-16 11:39:18,586 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 97 predicate places. [2022-09-16 11:39:18,586 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 250 transitions, 1345 flow [2022-09-16 11:39:18,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 130.2608695652174) internal successors, (2996), 23 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:18,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:18,587 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:39:18,607 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 11:39:18,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-16 11:39:18,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 106353707, now seen corresponding path program 1 times [2022-09-16 11:39:18,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:18,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561460117] [2022-09-16 11:39:18,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:18,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:19,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:19,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561460117] [2022-09-16 11:39:19,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561460117] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:39:19,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547757746] [2022-09-16 11:39:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:19,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:39:19,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:19,232 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 11:39:19,242 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 11:39:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:19,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 11:39:19,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:39:19,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-09-16 11:39:19,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-09-16 11:39:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:19,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:39:19,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-09-16 11:39:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:19,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547757746] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:39:19,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:39:19,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 7, 7] total 30 [2022-09-16 11:39:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685104263] [2022-09-16 11:39:19,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:39:19,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-09-16 11:39:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-09-16 11:39:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2022-09-16 11:39:19,746 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 183 [2022-09-16 11:39:19,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 250 transitions, 1345 flow. Second operand has 31 states, 31 states have (on average 117.0) internal successors, (3627), 31 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:19,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:19,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 183 [2022-09-16 11:39:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:23,813 INFO L130 PetriNetUnfolder]: 2846/16982 cut-off events. [2022-09-16 11:39:23,813 INFO L131 PetriNetUnfolder]: For 16192/16324 co-relation queries the response was YES. [2022-09-16 11:39:23,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34093 conditions, 16982 events. 2846/16982 cut-off events. For 16192/16324 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 201347 event pairs, 633 based on Foata normal form. 140/15985 useless extension candidates. Maximal degree in co-relation 33985. Up to 1417 conditions per place. [2022-09-16 11:39:24,009 INFO L137 encePairwiseOnDemand]: 159/183 looper letters, 279 selfloop transitions, 87 changer transitions 0/489 dead transitions. [2022-09-16 11:39:24,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 489 transitions, 3224 flow [2022-09-16 11:39:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-16 11:39:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-16 11:39:24,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3602 transitions. [2022-09-16 11:39:24,014 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6787262106651593 [2022-09-16 11:39:24,014 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3602 transitions. [2022-09-16 11:39:24,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3602 transitions. [2022-09-16 11:39:24,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:24,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3602 transitions. [2022-09-16 11:39:24,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 124.20689655172414) internal successors, (3602), 29 states have internal predecessors, (3602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:24,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:24,027 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:24,027 INFO L175 Difference]: Start difference. First operand has 264 places, 250 transitions, 1345 flow. Second operand 29 states and 3602 transitions. [2022-09-16 11:39:24,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 489 transitions, 3224 flow [2022-09-16 11:39:24,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 489 transitions, 3163 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-09-16 11:39:24,111 INFO L231 Difference]: Finished difference. Result has 294 places, 291 transitions, 2016 flow [2022-09-16 11:39:24,112 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2016, PETRI_PLACES=294, PETRI_TRANSITIONS=291} [2022-09-16 11:39:24,112 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 127 predicate places. [2022-09-16 11:39:24,112 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 291 transitions, 2016 flow [2022-09-16 11:39:24,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 117.0) internal successors, (3627), 31 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:24,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:24,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:24,139 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 11:39:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:39:24,339 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:24,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:24,340 INFO L85 PathProgramCache]: Analyzing trace with hash -696117990, now seen corresponding path program 1 times [2022-09-16 11:39:24,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:24,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690856800] [2022-09-16 11:39:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:24,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:24,613 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 11:39:24,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:24,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690856800] [2022-09-16 11:39:24,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690856800] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:24,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:24,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-16 11:39:24,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625269251] [2022-09-16 11:39:24,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:24,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:39:24,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:24,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:39:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:39:24,617 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 183 [2022-09-16 11:39:24,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 291 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 113.38888888888889) internal successors, (2041), 18 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:24,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:24,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 183 [2022-09-16 11:39:24,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:27,139 INFO L130 PetriNetUnfolder]: 1493/7643 cut-off events. [2022-09-16 11:39:27,139 INFO L131 PetriNetUnfolder]: For 19858/20201 co-relation queries the response was YES. [2022-09-16 11:39:27,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20131 conditions, 7643 events. 1493/7643 cut-off events. For 19858/20201 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 72637 event pairs, 786 based on Foata normal form. 47/7294 useless extension candidates. Maximal degree in co-relation 20079. Up to 2338 conditions per place. [2022-09-16 11:39:27,198 INFO L137 encePairwiseOnDemand]: 162/183 looper letters, 173 selfloop transitions, 34 changer transitions 0/336 dead transitions. [2022-09-16 11:39:27,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 336 transitions, 2563 flow [2022-09-16 11:39:27,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:39:27,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:39:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2607 transitions. [2022-09-16 11:39:27,202 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6475409836065574 [2022-09-16 11:39:27,202 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2607 transitions. [2022-09-16 11:39:27,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2607 transitions. [2022-09-16 11:39:27,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:27,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2607 transitions. [2022-09-16 11:39:27,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 118.5) internal successors, (2607), 22 states have internal predecessors, (2607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:27,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 183.0) internal successors, (4209), 23 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:27,211 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 183.0) internal successors, (4209), 23 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:27,211 INFO L175 Difference]: Start difference. First operand has 294 places, 291 transitions, 2016 flow. Second operand 22 states and 2607 transitions. [2022-09-16 11:39:27,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 336 transitions, 2563 flow [2022-09-16 11:39:27,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 336 transitions, 1973 flow, removed 44 selfloop flow, removed 47 redundant places. [2022-09-16 11:39:27,277 INFO L231 Difference]: Finished difference. Result has 260 places, 238 transitions, 1075 flow [2022-09-16 11:39:27,278 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1075, PETRI_PLACES=260, PETRI_TRANSITIONS=238} [2022-09-16 11:39:27,278 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 93 predicate places. [2022-09-16 11:39:27,278 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 238 transitions, 1075 flow [2022-09-16 11:39:27,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 113.38888888888889) internal successors, (2041), 18 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:27,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:27,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:39:27,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:39:27,279 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:39:27,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:27,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1017288970, now seen corresponding path program 1 times [2022-09-16 11:39:27,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:27,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563588830] [2022-09-16 11:39:27,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:27,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563588830] [2022-09-16 11:39:27,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563588830] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:39:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579928809] [2022-09-16 11:39:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:27,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:39:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:27,396 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 11:39:27,399 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 11:39:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:27,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 24 conjunts are in the unsatisfiable core [2022-09-16 11:39:27,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:39:27,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-09-16 11:39:27,649 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-09-16 11:39:27,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 28 [2022-09-16 11:39:27,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-09-16 11:39:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:27,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:39:50,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-09-16 11:39:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 6 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:39:50,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579928809] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:39:50,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:39:50,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 20 [2022-09-16 11:39:50,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470335964] [2022-09-16 11:39:50,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:39:50,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-09-16 11:39:50,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:50,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-09-16 11:39:50,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=350, Unknown=9, NotChecked=0, Total=420 [2022-09-16 11:39:50,561 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 183 [2022-09-16 11:39:50,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 238 transitions, 1075 flow. Second operand has 21 states, 21 states have (on average 120.38095238095238) internal successors, (2528), 21 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:39:50,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:50,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 183 [2022-09-16 11:39:50,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:05,015 INFO L130 PetriNetUnfolder]: 1967/9431 cut-off events. [2022-09-16 11:40:05,015 INFO L131 PetriNetUnfolder]: For 13953/14155 co-relation queries the response was YES. [2022-09-16 11:40:05,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21518 conditions, 9431 events. 1967/9431 cut-off events. For 13953/14155 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 93400 event pairs, 205 based on Foata normal form. 135/8946 useless extension candidates. Maximal degree in co-relation 21482. Up to 1155 conditions per place. [2022-09-16 11:40:05,163 INFO L137 encePairwiseOnDemand]: 165/183 looper letters, 269 selfloop transitions, 48 changer transitions 0/442 dead transitions. [2022-09-16 11:40:05,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 442 transitions, 2734 flow [2022-09-16 11:40:05,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:40:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-09-16 11:40:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3149 transitions. [2022-09-16 11:40:05,167 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6883060109289617 [2022-09-16 11:40:05,167 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3149 transitions. [2022-09-16 11:40:05,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3149 transitions. [2022-09-16 11:40:05,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:05,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3149 transitions. [2022-09-16 11:40:05,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 125.96) internal successors, (3149), 25 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:05,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:05,177 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:05,177 INFO L175 Difference]: Start difference. First operand has 260 places, 238 transitions, 1075 flow. Second operand 25 states and 3149 transitions. [2022-09-16 11:40:05,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 442 transitions, 2734 flow [2022-09-16 11:40:05,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 442 transitions, 2698 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-09-16 11:40:05,220 INFO L231 Difference]: Finished difference. Result has 277 places, 256 transitions, 1351 flow [2022-09-16 11:40:05,220 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1351, PETRI_PLACES=277, PETRI_TRANSITIONS=256} [2022-09-16 11:40:05,220 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 110 predicate places. [2022-09-16 11:40:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 256 transitions, 1351 flow [2022-09-16 11:40:05,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 120.38095238095238) internal successors, (2528), 21 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:05,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:05,221 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] [2022-09-16 11:40:05,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:40:05,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:40:05,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:05,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash 498718421, now seen corresponding path program 1 times [2022-09-16 11:40:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:05,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167637276] [2022-09-16 11:40:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:05,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:05,937 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 11:40:05,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:05,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167637276] [2022-09-16 11:40:05,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167637276] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:05,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:05,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:40:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865054675] [2022-09-16 11:40:05,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:05,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:40:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:40:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:40:05,940 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:40:05,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 256 transitions, 1351 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:05,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:05,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:40:05,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:09,957 INFO L130 PetriNetUnfolder]: 4309/15386 cut-off events. [2022-09-16 11:40:09,957 INFO L131 PetriNetUnfolder]: For 26317/26473 co-relation queries the response was YES. [2022-09-16 11:40:10,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39906 conditions, 15386 events. 4309/15386 cut-off events. For 26317/26473 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 145344 event pairs, 1267 based on Foata normal form. 9/14563 useless extension candidates. Maximal degree in co-relation 39864. Up to 4365 conditions per place. [2022-09-16 11:40:10,160 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 378 selfloop transitions, 85 changer transitions 0/580 dead transitions. [2022-09-16 11:40:10,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 580 transitions, 4390 flow [2022-09-16 11:40:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:40:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:40:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3010 transitions. [2022-09-16 11:40:10,163 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.587431693989071 [2022-09-16 11:40:10,163 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3010 transitions. [2022-09-16 11:40:10,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3010 transitions. [2022-09-16 11:40:10,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:10,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3010 transitions. [2022-09-16 11:40:10,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 107.5) internal successors, (3010), 28 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:10,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:10,172 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:10,172 INFO L175 Difference]: Start difference. First operand has 277 places, 256 transitions, 1351 flow. Second operand 28 states and 3010 transitions. [2022-09-16 11:40:10,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 580 transitions, 4390 flow [2022-09-16 11:40:10,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 580 transitions, 4164 flow, removed 51 selfloop flow, removed 9 redundant places. [2022-09-16 11:40:10,270 INFO L231 Difference]: Finished difference. Result has 311 places, 309 transitions, 2018 flow [2022-09-16 11:40:10,270 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2018, PETRI_PLACES=311, PETRI_TRANSITIONS=309} [2022-09-16 11:40:10,271 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 144 predicate places. [2022-09-16 11:40:10,271 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 309 transitions, 2018 flow [2022-09-16 11:40:10,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:10,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:10,272 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] [2022-09-16 11:40:10,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:40:10,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:10,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:10,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1163428591, now seen corresponding path program 2 times [2022-09-16 11:40:10,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:10,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387533569] [2022-09-16 11:40:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:10,755 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 11:40:10,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:10,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387533569] [2022-09-16 11:40:10,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387533569] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:10,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:10,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:40:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589922209] [2022-09-16 11:40:10,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:10,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:40:10,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:40:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:40:10,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:40:10,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 309 transitions, 2018 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:10,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:10,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:40:10,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:15,460 INFO L130 PetriNetUnfolder]: 4623/16504 cut-off events. [2022-09-16 11:40:15,460 INFO L131 PetriNetUnfolder]: For 34942/35133 co-relation queries the response was YES. [2022-09-16 11:40:15,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45388 conditions, 16504 events. 4623/16504 cut-off events. For 34942/35133 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 156356 event pairs, 1360 based on Foata normal form. 61/15835 useless extension candidates. Maximal degree in co-relation 45331. Up to 4696 conditions per place. [2022-09-16 11:40:15,767 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 395 selfloop transitions, 114 changer transitions 0/626 dead transitions. [2022-09-16 11:40:15,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 626 transitions, 5165 flow [2022-09-16 11:40:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:40:15,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:40:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3020 transitions. [2022-09-16 11:40:15,770 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5893832943013271 [2022-09-16 11:40:15,770 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3020 transitions. [2022-09-16 11:40:15,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3020 transitions. [2022-09-16 11:40:15,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:15,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3020 transitions. [2022-09-16 11:40:15,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 107.85714285714286) internal successors, (3020), 28 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:15,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:15,780 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:15,780 INFO L175 Difference]: Start difference. First operand has 311 places, 309 transitions, 2018 flow. Second operand 28 states and 3020 transitions. [2022-09-16 11:40:15,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 626 transitions, 5165 flow [2022-09-16 11:40:15,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 626 transitions, 5099 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-09-16 11:40:15,924 INFO L231 Difference]: Finished difference. Result has 344 places, 356 transitions, 2939 flow [2022-09-16 11:40:15,924 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2939, PETRI_PLACES=344, PETRI_TRANSITIONS=356} [2022-09-16 11:40:15,925 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 177 predicate places. [2022-09-16 11:40:15,925 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 356 transitions, 2939 flow [2022-09-16 11:40:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:15,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:15,926 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] [2022-09-16 11:40:15,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:40:15,926 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1736245, now seen corresponding path program 3 times [2022-09-16 11:40:15,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:15,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529764144] [2022-09-16 11:40:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:15,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:16,312 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 11:40:16,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:16,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529764144] [2022-09-16 11:40:16,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529764144] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:16,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:16,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:40:16,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216700291] [2022-09-16 11:40:16,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:16,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:40:16,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:16,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:40:16,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=543, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:40:16,315 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:40:16,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 356 transitions, 2939 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:16,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:16,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:40:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:21,240 INFO L130 PetriNetUnfolder]: 4336/16300 cut-off events. [2022-09-16 11:40:21,240 INFO L131 PetriNetUnfolder]: For 49006/49240 co-relation queries the response was YES. [2022-09-16 11:40:21,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48561 conditions, 16300 events. 4336/16300 cut-off events. For 49006/49240 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 157245 event pairs, 1312 based on Foata normal form. 107/15600 useless extension candidates. Maximal degree in co-relation 48489. Up to 4493 conditions per place. [2022-09-16 11:40:21,627 INFO L137 encePairwiseOnDemand]: 155/183 looper letters, 391 selfloop transitions, 143 changer transitions 0/669 dead transitions. [2022-09-16 11:40:21,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 669 transitions, 6412 flow [2022-09-16 11:40:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-16 11:40:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-09-16 11:40:21,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3802 transitions. [2022-09-16 11:40:21,631 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5935987509758002 [2022-09-16 11:40:21,631 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3802 transitions. [2022-09-16 11:40:21,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3802 transitions. [2022-09-16 11:40:21,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:21,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3802 transitions. [2022-09-16 11:40:21,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 108.62857142857143) internal successors, (3802), 35 states have internal predecessors, (3802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:21,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 183.0) internal successors, (6588), 36 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:21,642 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 183.0) internal successors, (6588), 36 states have internal predecessors, (6588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:21,642 INFO L175 Difference]: Start difference. First operand has 344 places, 356 transitions, 2939 flow. Second operand 35 states and 3802 transitions. [2022-09-16 11:40:21,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 669 transitions, 6412 flow [2022-09-16 11:40:21,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 669 transitions, 6222 flow, removed 51 selfloop flow, removed 9 redundant places. [2022-09-16 11:40:21,816 INFO L231 Difference]: Finished difference. Result has 388 places, 425 transitions, 4204 flow [2022-09-16 11:40:21,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4204, PETRI_PLACES=388, PETRI_TRANSITIONS=425} [2022-09-16 11:40:21,817 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 221 predicate places. [2022-09-16 11:40:21,817 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 425 transitions, 4204 flow [2022-09-16 11:40:21,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:21,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:21,818 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] [2022-09-16 11:40:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:40:21,818 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash -922499057, now seen corresponding path program 4 times [2022-09-16 11:40:21,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:21,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70370169] [2022-09-16 11:40:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:22,284 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 11:40:22,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:22,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70370169] [2022-09-16 11:40:22,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70370169] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:22,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:22,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:40:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285763505] [2022-09-16 11:40:22,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:22,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:40:22,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:22,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:40:22,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:40:22,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:40:22,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 425 transitions, 4204 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:22,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:22,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:40:22,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:28,240 INFO L130 PetriNetUnfolder]: 5434/18730 cut-off events. [2022-09-16 11:40:28,240 INFO L131 PetriNetUnfolder]: For 85136/85435 co-relation queries the response was YES. [2022-09-16 11:40:28,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62082 conditions, 18730 events. 5434/18730 cut-off events. For 85136/85435 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 178335 event pairs, 1546 based on Foata normal form. 67/17984 useless extension candidates. Maximal degree in co-relation 61991. Up to 5372 conditions per place. [2022-09-16 11:40:28,411 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 487 selfloop transitions, 167 changer transitions 0/771 dead transitions. [2022-09-16 11:40:28,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 771 transitions, 8420 flow [2022-09-16 11:40:28,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:40:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:40:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3036 transitions. [2022-09-16 11:40:28,414 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5925058548009368 [2022-09-16 11:40:28,414 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3036 transitions. [2022-09-16 11:40:28,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3036 transitions. [2022-09-16 11:40:28,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:28,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3036 transitions. [2022-09-16 11:40:28,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.42857142857143) internal successors, (3036), 28 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:28,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:28,422 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:28,422 INFO L175 Difference]: Start difference. First operand has 388 places, 425 transitions, 4204 flow. Second operand 28 states and 3036 transitions. [2022-09-16 11:40:28,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 771 transitions, 8420 flow [2022-09-16 11:40:28,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 771 transitions, 8272 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-09-16 11:40:28,708 INFO L231 Difference]: Finished difference. Result has 425 places, 480 transitions, 5641 flow [2022-09-16 11:40:28,708 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5641, PETRI_PLACES=425, PETRI_TRANSITIONS=480} [2022-09-16 11:40:28,708 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 258 predicate places. [2022-09-16 11:40:28,708 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 480 transitions, 5641 flow [2022-09-16 11:40:28,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:28,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:28,709 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] [2022-09-16 11:40:28,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:40:28,709 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:28,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:28,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1679099425, now seen corresponding path program 5 times [2022-09-16 11:40:28,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:28,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324948279] [2022-09-16 11:40:28,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:28,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:29,060 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 11:40:29,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:29,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324948279] [2022-09-16 11:40:29,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324948279] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:29,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:29,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:40:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051113574] [2022-09-16 11:40:29,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:29,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:40:29,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:29,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:40:29,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:40:29,063 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:40:29,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 480 transitions, 5641 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:29,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:29,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:40:29,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:34,814 INFO L130 PetriNetUnfolder]: 5025/18080 cut-off events. [2022-09-16 11:40:34,814 INFO L131 PetriNetUnfolder]: For 116755/117112 co-relation queries the response was YES. [2022-09-16 11:40:34,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64993 conditions, 18080 events. 5025/18080 cut-off events. For 116755/117112 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 174681 event pairs, 1419 based on Foata normal form. 136/17329 useless extension candidates. Maximal degree in co-relation 64886. Up to 4524 conditions per place. [2022-09-16 11:40:35,051 INFO L137 encePairwiseOnDemand]: 155/183 looper letters, 406 selfloop transitions, 224 changer transitions 0/773 dead transitions. [2022-09-16 11:40:35,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 773 transitions, 9548 flow [2022-09-16 11:40:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:40:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:40:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3277 transitions. [2022-09-16 11:40:35,055 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.596903460837887 [2022-09-16 11:40:35,055 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3277 transitions. [2022-09-16 11:40:35,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3277 transitions. [2022-09-16 11:40:35,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:35,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3277 transitions. [2022-09-16 11:40:35,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 109.23333333333333) internal successors, (3277), 30 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,065 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,065 INFO L175 Difference]: Start difference. First operand has 425 places, 480 transitions, 5641 flow. Second operand 30 states and 3277 transitions. [2022-09-16 11:40:35,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 773 transitions, 9548 flow [2022-09-16 11:40:35,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 773 transitions, 9278 flow, removed 108 selfloop flow, removed 8 redundant places. [2022-09-16 11:40:35,524 INFO L231 Difference]: Finished difference. Result has 464 places, 540 transitions, 7241 flow [2022-09-16 11:40:35,525 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=5413, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7241, PETRI_PLACES=464, PETRI_TRANSITIONS=540} [2022-09-16 11:40:35,525 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 297 predicate places. [2022-09-16 11:40:35,525 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 540 transitions, 7241 flow [2022-09-16 11:40:35,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:35,526 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] [2022-09-16 11:40:35,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:40:35,526 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1037875359, now seen corresponding path program 6 times [2022-09-16 11:40:35,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:35,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367919614] [2022-09-16 11:40:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:35,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:35,941 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 11:40:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367919614] [2022-09-16 11:40:35,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367919614] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:35,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:35,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:40:35,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797889930] [2022-09-16 11:40:35,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:35,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:40:35,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:40:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:40:35,943 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:40:35,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 540 transitions, 7241 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:35,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:35,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:40:35,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:43,657 INFO L130 PetriNetUnfolder]: 6244/20945 cut-off events. [2022-09-16 11:40:43,658 INFO L131 PetriNetUnfolder]: For 179060/179370 co-relation queries the response was YES. [2022-09-16 11:40:43,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80940 conditions, 20945 events. 6244/20945 cut-off events. For 179060/179370 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 200784 event pairs, 1972 based on Foata normal form. 70/20077 useless extension candidates. Maximal degree in co-relation 80815. Up to 6002 conditions per place. [2022-09-16 11:40:43,980 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 586 selfloop transitions, 212 changer transitions 0/915 dead transitions. [2022-09-16 11:40:43,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 915 transitions, 12453 flow [2022-09-16 11:40:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:40:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:40:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3260 transitions. [2022-09-16 11:40:43,984 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5938069216757741 [2022-09-16 11:40:43,984 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3260 transitions. [2022-09-16 11:40:43,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3260 transitions. [2022-09-16 11:40:43,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:43,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3260 transitions. [2022-09-16 11:40:43,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 108.66666666666667) internal successors, (3260), 30 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,992 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:43,992 INFO L175 Difference]: Start difference. First operand has 464 places, 540 transitions, 7241 flow. Second operand 30 states and 3260 transitions. [2022-09-16 11:40:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 915 transitions, 12453 flow [2022-09-16 11:40:44,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 915 transitions, 12037 flow, removed 191 selfloop flow, removed 7 redundant places. [2022-09-16 11:40:44,855 INFO L231 Difference]: Finished difference. Result has 503 places, 602 transitions, 9082 flow [2022-09-16 11:40:44,855 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=7005, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9082, PETRI_PLACES=503, PETRI_TRANSITIONS=602} [2022-09-16 11:40:44,856 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 336 predicate places. [2022-09-16 11:40:44,856 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 602 transitions, 9082 flow [2022-09-16 11:40:44,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:44,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:44,857 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] [2022-09-16 11:40:44,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:40:44,857 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:44,858 INFO L85 PathProgramCache]: Analyzing trace with hash -584567711, now seen corresponding path program 7 times [2022-09-16 11:40:44,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:44,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334789805] [2022-09-16 11:40:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:44,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:45,216 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 11:40:45,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:45,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334789805] [2022-09-16 11:40:45,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334789805] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:45,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:45,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:40:45,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412701664] [2022-09-16 11:40:45,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:45,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:40:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:40:45,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:40:45,219 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:40:45,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 602 transitions, 9082 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:45,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:45,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:40:45,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:40:52,672 INFO L130 PetriNetUnfolder]: 5745/20364 cut-off events. [2022-09-16 11:40:52,672 INFO L131 PetriNetUnfolder]: For 221876/222310 co-relation queries the response was YES. [2022-09-16 11:40:53,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83431 conditions, 20364 events. 5745/20364 cut-off events. For 221876/222310 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 199391 event pairs, 1851 based on Foata normal form. 181/19534 useless extension candidates. Maximal degree in co-relation 83289. Up to 5451 conditions per place. [2022-09-16 11:40:53,071 INFO L137 encePairwiseOnDemand]: 155/183 looper letters, 525 selfloop transitions, 249 changer transitions 0/926 dead transitions. [2022-09-16 11:40:53,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 926 transitions, 13828 flow [2022-09-16 11:40:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:40:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 11:40:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3524 transitions. [2022-09-16 11:40:53,077 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.601775956284153 [2022-09-16 11:40:53,077 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3524 transitions. [2022-09-16 11:40:53,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3524 transitions. [2022-09-16 11:40:53,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:40:53,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3524 transitions. [2022-09-16 11:40:53,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 110.125) internal successors, (3524), 32 states have internal predecessors, (3524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 183.0) internal successors, (6039), 33 states have internal predecessors, (6039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,086 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 183.0) internal successors, (6039), 33 states have internal predecessors, (6039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,086 INFO L175 Difference]: Start difference. First operand has 503 places, 602 transitions, 9082 flow. Second operand 32 states and 3524 transitions. [2022-09-16 11:40:53,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 926 transitions, 13828 flow [2022-09-16 11:40:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 926 transitions, 13394 flow, removed 162 selfloop flow, removed 8 redundant places. [2022-09-16 11:40:53,912 INFO L231 Difference]: Finished difference. Result has 543 places, 656 transitions, 10775 flow [2022-09-16 11:40:53,912 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=8722, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=10775, PETRI_PLACES=543, PETRI_TRANSITIONS=656} [2022-09-16 11:40:53,912 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 376 predicate places. [2022-09-16 11:40:53,912 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 656 transitions, 10775 flow [2022-09-16 11:40:53,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:53,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:40:53,913 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] [2022-09-16 11:40:53,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:40:53,913 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:40:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:40:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1395696541, now seen corresponding path program 8 times [2022-09-16 11:40:53,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:40:53,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667806751] [2022-09-16 11:40:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:40:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:40:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:40:54,361 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 11:40:54,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:40:54,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667806751] [2022-09-16 11:40:54,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667806751] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:40:54,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:40:54,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:40:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090486706] [2022-09-16 11:40:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:40:54,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:40:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:40:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:40:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:40:54,363 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:40:54,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 656 transitions, 10775 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:40:54,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:40:54,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:40:54,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:02,904 INFO L130 PetriNetUnfolder]: 6890/22742 cut-off events. [2022-09-16 11:41:02,904 INFO L131 PetriNetUnfolder]: For 306976/307358 co-relation queries the response was YES. [2022-09-16 11:41:03,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98434 conditions, 22742 events. 6890/22742 cut-off events. For 306976/307358 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 220544 event pairs, 2182 based on Foata normal form. 65/21792 useless extension candidates. Maximal degree in co-relation 98275. Up to 6619 conditions per place. [2022-09-16 11:41:03,239 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 623 selfloop transitions, 247 changer transitions 0/987 dead transitions. [2022-09-16 11:41:03,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 987 transitions, 15877 flow [2022-09-16 11:41:03,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:41:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:41:03,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3023 transitions. [2022-09-16 11:41:03,241 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.589968774395004 [2022-09-16 11:41:03,241 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3023 transitions. [2022-09-16 11:41:03,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3023 transitions. [2022-09-16 11:41:03,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:03,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3023 transitions. [2022-09-16 11:41:03,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 107.96428571428571) internal successors, (3023), 28 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,248 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:03,248 INFO L175 Difference]: Start difference. First operand has 543 places, 656 transitions, 10775 flow. Second operand 28 states and 3023 transitions. [2022-09-16 11:41:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 987 transitions, 15877 flow [2022-09-16 11:41:04,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 987 transitions, 15382 flow, removed 188 selfloop flow, removed 9 redundant places. [2022-09-16 11:41:04,412 INFO L231 Difference]: Finished difference. Result has 578 places, 705 transitions, 12552 flow [2022-09-16 11:41:04,413 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=10341, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12552, PETRI_PLACES=578, PETRI_TRANSITIONS=705} [2022-09-16 11:41:04,413 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 411 predicate places. [2022-09-16 11:41:04,413 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 705 transitions, 12552 flow [2022-09-16 11:41:04,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:04,414 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] [2022-09-16 11:41:04,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:41:04,414 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:41:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash -259436463, now seen corresponding path program 9 times [2022-09-16 11:41:04,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:04,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337049749] [2022-09-16 11:41:04,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:04,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:04,813 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 11:41:04,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:04,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337049749] [2022-09-16 11:41:04,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337049749] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:04,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:04,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:41:04,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702003640] [2022-09-16 11:41:04,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:04,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:41:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:41:04,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:41:04,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:41:04,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 705 transitions, 12552 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:04,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:04,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:41:04,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:15,337 INFO L130 PetriNetUnfolder]: 7292/23973 cut-off events. [2022-09-16 11:41:15,337 INFO L131 PetriNetUnfolder]: For 390917/391317 co-relation queries the response was YES. [2022-09-16 11:41:15,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109340 conditions, 23973 events. 7292/23973 cut-off events. For 390917/391317 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 234647 event pairs, 2154 based on Foata normal form. 79/22984 useless extension candidates. Maximal degree in co-relation 109164. Up to 6970 conditions per place. [2022-09-16 11:41:16,029 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 698 selfloop transitions, 274 changer transitions 0/1089 dead transitions. [2022-09-16 11:41:16,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 1089 transitions, 18808 flow [2022-09-16 11:41:16,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-16 11:41:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-09-16 11:41:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3356 transitions. [2022-09-16 11:41:16,031 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5915741230389565 [2022-09-16 11:41:16,031 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3356 transitions. [2022-09-16 11:41:16,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3356 transitions. [2022-09-16 11:41:16,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:16,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3356 transitions. [2022-09-16 11:41:16,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 108.25806451612904) internal successors, (3356), 31 states have internal predecessors, (3356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 183.0) internal successors, (5856), 32 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,040 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 183.0) internal successors, (5856), 32 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:16,040 INFO L175 Difference]: Start difference. First operand has 578 places, 705 transitions, 12552 flow. Second operand 31 states and 3356 transitions. [2022-09-16 11:41:16,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 1089 transitions, 18808 flow [2022-09-16 11:41:17,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1089 transitions, 18453 flow, removed 173 selfloop flow, removed 5 redundant places. [2022-09-16 11:41:17,824 INFO L231 Difference]: Finished difference. Result has 620 places, 762 transitions, 14945 flow [2022-09-16 11:41:17,824 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=12205, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=14945, PETRI_PLACES=620, PETRI_TRANSITIONS=762} [2022-09-16 11:41:17,824 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 453 predicate places. [2022-09-16 11:41:17,825 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 762 transitions, 14945 flow [2022-09-16 11:41:17,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:17,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:17,825 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] [2022-09-16 11:41:17,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:41:17,825 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:41:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1634430969, now seen corresponding path program 10 times [2022-09-16 11:41:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:17,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859202455] [2022-09-16 11:41:17,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:17,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:18,192 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 11:41:18,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:18,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859202455] [2022-09-16 11:41:18,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859202455] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:18,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:18,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:41:18,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22489926] [2022-09-16 11:41:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:18,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:41:18,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:41:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:41:18,195 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:41:18,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 762 transitions, 14945 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:18,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:18,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:41:18,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:29,249 INFO L130 PetriNetUnfolder]: 6702/22650 cut-off events. [2022-09-16 11:41:29,249 INFO L131 PetriNetUnfolder]: For 474362/474944 co-relation queries the response was YES. [2022-09-16 11:41:29,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111815 conditions, 22650 events. 6702/22650 cut-off events. For 474362/474944 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 223886 event pairs, 1603 based on Foata normal form. 213/21752 useless extension candidates. Maximal degree in co-relation 111622. Up to 4926 conditions per place. [2022-09-16 11:41:29,699 INFO L137 encePairwiseOnDemand]: 154/183 looper letters, 520 selfloop transitions, 451 changer transitions 0/1135 dead transitions. [2022-09-16 11:41:29,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 665 places, 1135 transitions, 21930 flow [2022-09-16 11:41:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-09-16 11:41:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-09-16 11:41:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 4945 transitions. [2022-09-16 11:41:29,703 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.587431693989071 [2022-09-16 11:41:29,703 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 4945 transitions. [2022-09-16 11:41:29,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 4945 transitions. [2022-09-16 11:41:29,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:29,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 4945 transitions. [2022-09-16 11:41:29,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 107.5) internal successors, (4945), 46 states have internal predecessors, (4945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:29,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 183.0) internal successors, (8601), 47 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:29,716 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 183.0) internal successors, (8601), 47 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:29,716 INFO L175 Difference]: Start difference. First operand has 620 places, 762 transitions, 14945 flow. Second operand 46 states and 4945 transitions. [2022-09-16 11:41:29,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 665 places, 1135 transitions, 21930 flow [2022-09-16 11:41:31,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 1135 transitions, 21397 flow, removed 194 selfloop flow, removed 10 redundant places. [2022-09-16 11:41:31,786 INFO L231 Difference]: Finished difference. Result has 683 places, 845 transitions, 18266 flow [2022-09-16 11:41:31,787 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=14504, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=376, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=18266, PETRI_PLACES=683, PETRI_TRANSITIONS=845} [2022-09-16 11:41:31,787 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 516 predicate places. [2022-09-16 11:41:31,787 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 845 transitions, 18266 flow [2022-09-16 11:41:31,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:31,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:31,788 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] [2022-09-16 11:41:31,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:41:31,788 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:41:31,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2119262319, now seen corresponding path program 11 times [2022-09-16 11:41:31,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:31,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590386219] [2022-09-16 11:41:31,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:31,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:32,144 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 11:41:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:32,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590386219] [2022-09-16 11:41:32,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590386219] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:32,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:32,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:41:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001829396] [2022-09-16 11:41:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:41:32,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:41:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:41:32,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:41:32,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 845 transitions, 18266 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:32,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:32,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:41:32,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:41:43,427 INFO L130 PetriNetUnfolder]: 7018/23514 cut-off events. [2022-09-16 11:41:43,427 INFO L131 PetriNetUnfolder]: For 616091/616708 co-relation queries the response was YES. [2022-09-16 11:41:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123910 conditions, 23514 events. 7018/23514 cut-off events. For 616091/616708 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 233601 event pairs, 1475 based on Foata normal form. 229/22588 useless extension candidates. Maximal degree in co-relation 123689. Up to 4937 conditions per place. [2022-09-16 11:41:44,060 INFO L137 encePairwiseOnDemand]: 155/183 looper letters, 509 selfloop transitions, 491 changer transitions 0/1164 dead transitions. [2022-09-16 11:41:44,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 1164 transitions, 24290 flow [2022-09-16 11:41:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:41:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-16 11:41:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4321 transitions. [2022-09-16 11:41:44,064 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5903005464480874 [2022-09-16 11:41:44,064 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4321 transitions. [2022-09-16 11:41:44,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4321 transitions. [2022-09-16 11:41:44,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:41:44,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4321 transitions. [2022-09-16 11:41:44,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 108.025) internal successors, (4321), 40 states have internal predecessors, (4321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:44,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 183.0) internal successors, (7503), 41 states have internal predecessors, (7503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:44,074 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 183.0) internal successors, (7503), 41 states have internal predecessors, (7503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:44,074 INFO L175 Difference]: Start difference. First operand has 683 places, 845 transitions, 18266 flow. Second operand 40 states and 4321 transitions. [2022-09-16 11:41:44,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 1164 transitions, 24290 flow [2022-09-16 11:41:47,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 1164 transitions, 23559 flow, removed 307 selfloop flow, removed 12 redundant places. [2022-09-16 11:41:47,148 INFO L231 Difference]: Finished difference. Result has 719 places, 884 transitions, 20354 flow [2022-09-16 11:41:47,149 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=17577, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=20354, PETRI_PLACES=719, PETRI_TRANSITIONS=884} [2022-09-16 11:41:47,150 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 552 predicate places. [2022-09-16 11:41:47,150 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 884 transitions, 20354 flow [2022-09-16 11:41:47,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:47,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:41:47,150 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] [2022-09-16 11:41:47,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:41:47,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:41:47,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:41:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash -931223275, now seen corresponding path program 12 times [2022-09-16 11:41:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:41:47,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878262150] [2022-09-16 11:41:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:41:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:41:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:41:47,592 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 11:41:47,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:41:47,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878262150] [2022-09-16 11:41:47,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878262150] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:41:47,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:41:47,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-16 11:41:47,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504058846] [2022-09-16 11:41:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:41:47,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:41:47,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:41:47,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:41:47,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:41:47,595 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 183 [2022-09-16 11:41:47,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 884 transitions, 20354 flow. Second operand has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:41:47,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:41:47,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 183 [2022-09-16 11:41:47,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:00,514 INFO L130 PetriNetUnfolder]: 8333/26671 cut-off events. [2022-09-16 11:42:00,514 INFO L131 PetriNetUnfolder]: For 736967/737478 co-relation queries the response was YES. [2022-09-16 11:42:01,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143191 conditions, 26671 events. 8333/26671 cut-off events. For 736967/737478 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 264016 event pairs, 2602 based on Foata normal form. 73/25540 useless extension candidates. Maximal degree in co-relation 142962. Up to 8125 conditions per place. [2022-09-16 11:42:01,231 INFO L137 encePairwiseOnDemand]: 153/183 looper letters, 792 selfloop transitions, 320 changer transitions 0/1229 dead transitions. [2022-09-16 11:42:01,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 1229 transitions, 26902 flow [2022-09-16 11:42:01,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:42:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:42:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3037 transitions. [2022-09-16 11:42:01,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5927010148321624 [2022-09-16 11:42:01,235 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3037 transitions. [2022-09-16 11:42:01,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3037 transitions. [2022-09-16 11:42:01,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:01,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3037 transitions. [2022-09-16 11:42:01,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.46428571428571) internal successors, (3037), 28 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,243 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 183.0) internal successors, (5307), 29 states have internal predecessors, (5307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:01,243 INFO L175 Difference]: Start difference. First operand has 719 places, 884 transitions, 20354 flow. Second operand 28 states and 3037 transitions. [2022-09-16 11:42:01,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 1229 transitions, 26902 flow [2022-09-16 11:42:06,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 1229 transitions, 25817 flow, removed 384 selfloop flow, removed 25 redundant places. [2022-09-16 11:42:06,143 INFO L231 Difference]: Finished difference. Result has 736 places, 937 transitions, 22495 flow [2022-09-16 11:42:06,145 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=19585, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=22495, PETRI_PLACES=736, PETRI_TRANSITIONS=937} [2022-09-16 11:42:06,146 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 569 predicate places. [2022-09-16 11:42:06,146 INFO L495 AbstractCegarLoop]: Abstraction has has 736 places, 937 transitions, 22495 flow [2022-09-16 11:42:06,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 97.96296296296296) internal successors, (2645), 27 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:06,147 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] [2022-09-16 11:42:06,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:42:06,147 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:42:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash -226746529, now seen corresponding path program 13 times [2022-09-16 11:42:06,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:06,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129462478] [2022-09-16 11:42:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:06,682 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 11:42:06,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:06,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129462478] [2022-09-16 11:42:06,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129462478] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:06,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:06,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:42:06,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418794522] [2022-09-16 11:42:06,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:06,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:42:06,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:42:06,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:42:06,686 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:42:06,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 937 transitions, 22495 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:06,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:06,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:42:06,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:42:20,882 INFO L130 PetriNetUnfolder]: 7686/26001 cut-off events. [2022-09-16 11:42:20,882 INFO L131 PetriNetUnfolder]: For 679004/679626 co-relation queries the response was YES. [2022-09-16 11:42:21,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136492 conditions, 26001 events. 7686/26001 cut-off events. For 679004/679626 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 263285 event pairs, 2333 based on Foata normal form. 215/24945 useless extension candidates. Maximal degree in co-relation 136250. Up to 7189 conditions per place. [2022-09-16 11:42:21,710 INFO L137 encePairwiseOnDemand]: 155/183 looper letters, 682 selfloop transitions, 377 changer transitions 0/1230 dead transitions. [2022-09-16 11:42:21,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 1230 transitions, 28505 flow [2022-09-16 11:42:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:42:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 11:42:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3279 transitions. [2022-09-16 11:42:21,713 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5972677595628415 [2022-09-16 11:42:21,713 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3279 transitions. [2022-09-16 11:42:21,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3279 transitions. [2022-09-16 11:42:21,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:42:21,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3279 transitions. [2022-09-16 11:42:21,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 109.3) internal successors, (3279), 30 states have internal predecessors, (3279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:21,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:21,720 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:21,720 INFO L175 Difference]: Start difference. First operand has 736 places, 937 transitions, 22495 flow. Second operand 30 states and 3279 transitions. [2022-09-16 11:42:21,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 1230 transitions, 28505 flow [2022-09-16 11:42:25,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 1230 transitions, 27967 flow, removed 200 selfloop flow, removed 9 redundant places. [2022-09-16 11:42:25,566 INFO L231 Difference]: Finished difference. Result has 773 places, 996 transitions, 25166 flow [2022-09-16 11:42:25,567 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=22054, PETRI_DIFFERENCE_MINUEND_PLACES=727, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=25166, PETRI_PLACES=773, PETRI_TRANSITIONS=996} [2022-09-16 11:42:25,567 INFO L287 CegarLoopForPetriNet]: 167 programPoint places, 606 predicate places. [2022-09-16 11:42:25,567 INFO L495 AbstractCegarLoop]: Abstraction has has 773 places, 996 transitions, 25166 flow [2022-09-16 11:42:25,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:25,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:42:25,568 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] [2022-09-16 11:42:25,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:42:25,568 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-09-16 11:42:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:42:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1409009693, now seen corresponding path program 14 times [2022-09-16 11:42:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:42:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249729218] [2022-09-16 11:42:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:42:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:42:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:42:25,966 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 11:42:25,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:42:25,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249729218] [2022-09-16 11:42:25,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249729218] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:42:25,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:42:25,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-09-16 11:42:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233405558] [2022-09-16 11:42:25,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:42:25,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:42:25,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:42:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:42:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:42:25,969 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 183 [2022-09-16 11:42:25,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 996 transitions, 25166 flow. Second operand has 25 states, 25 states have (on average 102.04) internal successors, (2551), 25 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:42:25,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:42:25,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 183 [2022-09-16 11:42:25,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand