/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 -i ../../../trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:43:36,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:43:36,520 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:43:36,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:43:36,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:43:36,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:43:36,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:43:36,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:43:36,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:43:36,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:43:36,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:43:36,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:43:36,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:43:36,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:43:36,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:43:36,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:43:36,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:43:36,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:43:36,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:43:36,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:43:36,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:43:36,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:43:36,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:43:36,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:43:36,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:43:36,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:43:36,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:43:36,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:43:36,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:43:36,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:43:36,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:43:36,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:43:36,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:43:36,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:43:36,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:43:36,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:43:36,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:43:36,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:43:36,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:43:36,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:43:36,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:43:36,597 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 [2022-09-20 20:43:36,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:43:36,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:43:36,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:43:36,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:43:36,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:43:36,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:43:36,623 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:43:36,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:43:36,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:43:36,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:43:36,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:43:36,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:43:36,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:43:36,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:43:36,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:43:36,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:43:36,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:43:36,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:43:36,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:43:36,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:43:36,626 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:43:36,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:43:36,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:43:36,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:43:36,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:43:36,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:43:36,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:43:36,831 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:43:36,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i [2022-09-20 20:43:36,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe594b19c/490d4f1514f64f188e6303d53f9a518d/FLAG3dace0b19 [2022-09-20 20:43:37,337 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:43:37,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i [2022-09-20 20:43:37,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe594b19c/490d4f1514f64f188e6303d53f9a518d/FLAG3dace0b19 [2022-09-20 20:43:37,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe594b19c/490d4f1514f64f188e6303d53f9a518d [2022-09-20 20:43:37,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:43:37,659 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:43:37,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:43:37,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:43:37,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:43:37,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:43:37" (1/1) ... [2022-09-20 20:43:37,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deafc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:37, skipping insertion in model container [2022-09-20 20:43:37,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:43:37" (1/1) ... [2022-09-20 20:43:37,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:43:37,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:43:37,817 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-20 20:43:37,968 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/divinefifo_1w1r.i[47275,47288] [2022-09-20 20:43:37,972 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/divinefifo_1w1r.i[47463,47476] [2022-09-20 20:43:37,987 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/divinefifo_1w1r.i[48230,48243] [2022-09-20 20:43:37,988 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/divinefifo_1w1r.i[48344,48357] [2022-09-20 20:43:37,991 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/divinefifo_1w1r.i[48781,48794] [2022-09-20 20:43:37,991 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/divinefifo_1w1r.i[48837,48850] [2022-09-20 20:43:37,996 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/divinefifo_1w1r.i[49349,49362] [2022-09-20 20:43:37,996 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/divinefifo_1w1r.i[49408,49421] [2022-09-20 20:43:37,997 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/divinefifo_1w1r.i[49487,49500] [2022-09-20 20:43:37,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:43:38,004 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:43:38,012 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-20 20:43:38,030 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/divinefifo_1w1r.i[47275,47288] [2022-09-20 20:43:38,031 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/divinefifo_1w1r.i[47463,47476] [2022-09-20 20:43:38,035 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/divinefifo_1w1r.i[48230,48243] [2022-09-20 20:43:38,036 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/divinefifo_1w1r.i[48344,48357] [2022-09-20 20:43:38,038 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/divinefifo_1w1r.i[48781,48794] [2022-09-20 20:43:38,038 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/divinefifo_1w1r.i[48837,48850] [2022-09-20 20:43:38,041 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/divinefifo_1w1r.i[49349,49362] [2022-09-20 20:43:38,041 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/divinefifo_1w1r.i[49408,49421] [2022-09-20 20:43:38,042 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/divinefifo_1w1r.i[49487,49500] [2022-09-20 20:43:38,042 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:43:38,083 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:43:38,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38 WrapperNode [2022-09-20 20:43:38,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:43:38,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:43:38,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:43:38,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:43:38,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,144 INFO L138 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 405 [2022-09-20 20:43:38,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:43:38,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:43:38,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:43:38,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:43:38,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:43:38,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:43:38,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:43:38,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:43:38,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (1/1) ... [2022-09-20 20:43:38,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:43:38,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:43:38,218 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) [2022-09-20 20:43:38,222 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 [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-09-20 20:43:38,241 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 20:43:38,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:43:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-20 20:43:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:43:38,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:43:38,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:43:38,243 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:43:38,371 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:43:38,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:43:38,843 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:43:38,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:43:38,856 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-20 20:43:38,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:43:38 BoogieIcfgContainer [2022-09-20 20:43:38,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:43:38,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:43:38,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:43:38,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:43:38,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:43:37" (1/3) ... [2022-09-20 20:43:38,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5929b94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:43:38, skipping insertion in model container [2022-09-20 20:43:38,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:43:38" (2/3) ... [2022-09-20 20:43:38,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5929b94a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:43:38, skipping insertion in model container [2022-09-20 20:43:38,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:43:38" (3/3) ... [2022-09-20 20:43:38,865 INFO L112 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-09-20 20:43:38,877 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:43:38,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-09-20 20:43:38,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:43:38,958 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-09-20 20:43:39,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 495 transitions, 998 flow [2022-09-20 20:43:39,108 INFO L130 PetriNetUnfolder]: 32/494 cut-off events. [2022-09-20 20:43:39,108 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-09-20 20:43:39,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 494 events. 32/494 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1130 event pairs, 0 based on Foata normal form. 0/451 useless extension candidates. Maximal degree in co-relation 340. Up to 3 conditions per place. [2022-09-20 20:43:39,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 495 transitions, 998 flow [2022-09-20 20:43:39,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 448 places, 475 transitions, 956 flow [2022-09-20 20:43:39,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:43:39,133 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;@1e91bd3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:43:39,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-09-20 20:43:39,145 INFO L130 PetriNetUnfolder]: 2/70 cut-off events. [2022-09-20 20:43:39,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:43:39,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:39,147 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] [2022-09-20 20:43:39,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:39,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:39,151 INFO L85 PathProgramCache]: Analyzing trace with hash 894712245, now seen corresponding path program 1 times [2022-09-20 20:43:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:39,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790461196] [2022-09-20 20:43:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:39,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:39,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790461196] [2022-09-20 20:43:39,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790461196] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:39,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:39,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-20 20:43:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371395837] [2022-09-20 20:43:39,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:39,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 20:43:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 20:43:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-09-20 20:43:39,621 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 495 [2022-09-20 20:43:39,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 475 transitions, 956 flow. Second operand has 12 states, 12 states have (on average 305.9166666666667) internal successors, (3671), 12 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:39,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:39,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 495 [2022-09-20 20:43:39,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:41,002 INFO L130 PetriNetUnfolder]: 1940/7030 cut-off events. [2022-09-20 20:43:41,002 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-20 20:43:41,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10498 conditions, 7030 events. 1940/7030 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 59273 event pairs, 1154 based on Foata normal form. 425/6954 useless extension candidates. Maximal degree in co-relation 10302. Up to 2759 conditions per place. [2022-09-20 20:43:41,033 INFO L137 encePairwiseOnDemand]: 456/495 looper letters, 164 selfloop transitions, 24 changer transitions 0/475 dead transitions. [2022-09-20 20:43:41,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 475 transitions, 1332 flow [2022-09-20 20:43:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 20:43:41,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 20:43:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4460 transitions. [2022-09-20 20:43:41,056 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6435786435786436 [2022-09-20 20:43:41,057 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4460 transitions. [2022-09-20 20:43:41,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4460 transitions. [2022-09-20 20:43:41,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:41,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4460 transitions. [2022-09-20 20:43:41,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 318.57142857142856) internal successors, (4460), 14 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:41,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 495.0) internal successors, (7425), 15 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:41,090 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 495.0) internal successors, (7425), 15 states have internal predecessors, (7425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:41,091 INFO L175 Difference]: Start difference. First operand has 448 places, 475 transitions, 956 flow. Second operand 14 states and 4460 transitions. [2022-09-20 20:43:41,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 475 transitions, 1332 flow [2022-09-20 20:43:41,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 475 transitions, 1328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:43:41,103 INFO L231 Difference]: Finished difference. Result has 459 places, 460 transitions, 970 flow [2022-09-20 20:43:41,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=970, PETRI_PLACES=459, PETRI_TRANSITIONS=460} [2022-09-20 20:43:41,107 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 11 predicate places. [2022-09-20 20:43:41,107 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 460 transitions, 970 flow [2022-09-20 20:43:41,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 305.9166666666667) internal successors, (3671), 12 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:41,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:41,109 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] [2022-09-20 20:43:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:43:41,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:41,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash 775770239, now seen corresponding path program 1 times [2022-09-20 20:43:41,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:41,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146530921] [2022-09-20 20:43:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:41,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146530921] [2022-09-20 20:43:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146530921] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:41,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:41,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-09-20 20:43:41,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698773669] [2022-09-20 20:43:41,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:41,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-20 20:43:41,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-20 20:43:41,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-09-20 20:43:41,703 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 495 [2022-09-20 20:43:41,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 460 transitions, 970 flow. Second operand has 22 states, 22 states have (on average 259.95454545454544) internal successors, (5719), 22 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:41,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:41,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 495 [2022-09-20 20:43:41,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:45,684 INFO L130 PetriNetUnfolder]: 4650/14396 cut-off events. [2022-09-20 20:43:45,684 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-09-20 20:43:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23304 conditions, 14396 events. 4650/14396 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 129479 event pairs, 166 based on Foata normal form. 0/13710 useless extension candidates. Maximal degree in co-relation 19793. Up to 3542 conditions per place. [2022-09-20 20:43:45,741 INFO L137 encePairwiseOnDemand]: 450/495 looper letters, 383 selfloop transitions, 54 changer transitions 0/680 dead transitions. [2022-09-20 20:43:45,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 680 transitions, 2305 flow [2022-09-20 20:43:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-20 20:43:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-20 20:43:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8694 transitions. [2022-09-20 20:43:45,755 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5488636363636363 [2022-09-20 20:43:45,755 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8694 transitions. [2022-09-20 20:43:45,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8694 transitions. [2022-09-20 20:43:45,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:45,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8694 transitions. [2022-09-20 20:43:45,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 271.6875) internal successors, (8694), 32 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:45,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 495.0) internal successors, (16335), 33 states have internal predecessors, (16335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:45,799 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 495.0) internal successors, (16335), 33 states have internal predecessors, (16335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:45,799 INFO L175 Difference]: Start difference. First operand has 459 places, 460 transitions, 970 flow. Second operand 32 states and 8694 transitions. [2022-09-20 20:43:45,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 680 transitions, 2305 flow [2022-09-20 20:43:45,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 680 transitions, 2237 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-09-20 20:43:45,816 INFO L231 Difference]: Finished difference. Result has 477 places, 475 transitions, 1095 flow [2022-09-20 20:43:45,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1095, PETRI_PLACES=477, PETRI_TRANSITIONS=475} [2022-09-20 20:43:45,817 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 29 predicate places. [2022-09-20 20:43:45,817 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 475 transitions, 1095 flow [2022-09-20 20:43:45,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 259.95454545454544) internal successors, (5719), 22 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:45,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:45,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:45,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:43:45,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2057725171, now seen corresponding path program 1 times [2022-09-20 20:43:45,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:45,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011111651] [2022-09-20 20:43:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:45,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011111651] [2022-09-20 20:43:45,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011111651] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:45,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:45,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:43:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998914002] [2022-09-20 20:43:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:45,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:43:45,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:43:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:43:45,910 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 467 out of 495 [2022-09-20 20:43:45,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 475 transitions, 1095 flow. Second operand has 5 states, 5 states have (on average 468.6) internal successors, (2343), 5 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:45,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:45,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 467 of 495 [2022-09-20 20:43:45,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:46,014 INFO L130 PetriNetUnfolder]: 29/878 cut-off events. [2022-09-20 20:43:46,014 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-09-20 20:43:46,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 878 events. 29/878 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2201 event pairs, 0 based on Foata normal form. 0/838 useless extension candidates. Maximal degree in co-relation 634. Up to 18 conditions per place. [2022-09-20 20:43:46,023 INFO L137 encePairwiseOnDemand]: 487/495 looper letters, 8 selfloop transitions, 7 changer transitions 0/476 dead transitions. [2022-09-20 20:43:46,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 476 transitions, 1124 flow [2022-09-20 20:43:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:43:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:43:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2351 transitions. [2022-09-20 20:43:46,027 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9498989898989899 [2022-09-20 20:43:46,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2351 transitions. [2022-09-20 20:43:46,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2351 transitions. [2022-09-20 20:43:46,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:46,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2351 transitions. [2022-09-20 20:43:46,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 470.2) internal successors, (2351), 5 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,035 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,035 INFO L175 Difference]: Start difference. First operand has 477 places, 475 transitions, 1095 flow. Second operand 5 states and 2351 transitions. [2022-09-20 20:43:46,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 476 transitions, 1124 flow [2022-09-20 20:43:46,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 476 transitions, 1069 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-09-20 20:43:46,042 INFO L231 Difference]: Finished difference. Result has 457 places, 475 transitions, 1061 flow [2022-09-20 20:43:46,042 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1061, PETRI_PLACES=457, PETRI_TRANSITIONS=475} [2022-09-20 20:43:46,043 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 9 predicate places. [2022-09-20 20:43:46,043 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 475 transitions, 1061 flow [2022-09-20 20:43:46,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 468.6) internal successors, (2343), 5 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:46,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:46,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:43:46,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:46,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:46,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1711191470, now seen corresponding path program 1 times [2022-09-20 20:43:46,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:46,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063901993] [2022-09-20 20:43:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:46,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063901993] [2022-09-20 20:43:46,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063901993] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:46,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:46,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:43:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464087705] [2022-09-20 20:43:46,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:43:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:43:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:43:46,082 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 470 out of 495 [2022-09-20 20:43:46,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 475 transitions, 1061 flow. Second operand has 3 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:46,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 470 of 495 [2022-09-20 20:43:46,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:46,213 INFO L130 PetriNetUnfolder]: 38/1125 cut-off events. [2022-09-20 20:43:46,213 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-09-20 20:43:46,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 1125 events. 38/1125 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3112 event pairs, 1 based on Foata normal form. 0/1074 useless extension candidates. Maximal degree in co-relation 991. Up to 22 conditions per place. [2022-09-20 20:43:46,226 INFO L137 encePairwiseOnDemand]: 492/495 looper letters, 13 selfloop transitions, 2 changer transitions 0/479 dead transitions. [2022-09-20 20:43:46,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 479 transitions, 1095 flow [2022-09-20 20:43:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:43:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:43:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1426 transitions. [2022-09-20 20:43:46,229 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9602693602693603 [2022-09-20 20:43:46,229 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1426 transitions. [2022-09-20 20:43:46,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1426 transitions. [2022-09-20 20:43:46,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:46,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1426 transitions. [2022-09-20 20:43:46,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 475.3333333333333) internal successors, (1426), 3 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,233 INFO L175 Difference]: Start difference. First operand has 457 places, 475 transitions, 1061 flow. Second operand 3 states and 1426 transitions. [2022-09-20 20:43:46,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 479 transitions, 1095 flow [2022-09-20 20:43:46,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 479 transitions, 1086 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-20 20:43:46,241 INFO L231 Difference]: Finished difference. Result has 458 places, 475 transitions, 1058 flow [2022-09-20 20:43:46,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1058, PETRI_PLACES=458, PETRI_TRANSITIONS=475} [2022-09-20 20:43:46,242 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 10 predicate places. [2022-09-20 20:43:46,242 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 475 transitions, 1058 flow [2022-09-20 20:43:46,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 471.3333333333333) internal successors, (1414), 3 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:46,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:46,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:43:46,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:46,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:46,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1378553318, now seen corresponding path program 1 times [2022-09-20 20:43:46,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:46,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055003103] [2022-09-20 20:43:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:46,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:46,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:46,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:46,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055003103] [2022-09-20 20:43:46,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055003103] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:46,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:46,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:43:46,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575510449] [2022-09-20 20:43:46,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:46,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:43:46,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:43:46,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:43:46,572 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 495 [2022-09-20 20:43:46,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 475 transitions, 1058 flow. Second operand has 19 states, 19 states have (on average 327.36842105263156) internal successors, (6220), 19 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:46,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:46,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 495 [2022-09-20 20:43:46,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:50,420 INFO L130 PetriNetUnfolder]: 5804/22022 cut-off events. [2022-09-20 20:43:50,420 INFO L131 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-09-20 20:43:50,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33493 conditions, 22022 events. 5804/22022 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 209730 event pairs, 1163 based on Foata normal form. 0/21102 useless extension candidates. Maximal degree in co-relation 17192. Up to 5186 conditions per place. [2022-09-20 20:43:50,518 INFO L137 encePairwiseOnDemand]: 463/495 looper letters, 343 selfloop transitions, 44 changer transitions 0/707 dead transitions. [2022-09-20 20:43:50,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 707 transitions, 2305 flow [2022-09-20 20:43:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-20 20:43:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-20 20:43:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7537 transitions. [2022-09-20 20:43:50,528 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6921028466483012 [2022-09-20 20:43:50,528 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7537 transitions. [2022-09-20 20:43:50,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7537 transitions. [2022-09-20 20:43:50,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:50,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7537 transitions. [2022-09-20 20:43:50,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 342.59090909090907) internal successors, (7537), 22 states have internal predecessors, (7537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:50,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 495.0) internal successors, (11385), 23 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:50,549 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 495.0) internal successors, (11385), 23 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:50,550 INFO L175 Difference]: Start difference. First operand has 458 places, 475 transitions, 1058 flow. Second operand 22 states and 7537 transitions. [2022-09-20 20:43:50,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 707 transitions, 2305 flow [2022-09-20 20:43:50,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 707 transitions, 2303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:43:50,561 INFO L231 Difference]: Finished difference. Result has 486 places, 507 transitions, 1296 flow [2022-09-20 20:43:50,561 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1296, PETRI_PLACES=486, PETRI_TRANSITIONS=507} [2022-09-20 20:43:50,563 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 38 predicate places. [2022-09-20 20:43:50,564 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 507 transitions, 1296 flow [2022-09-20 20:43:50,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 327.36842105263156) internal successors, (6220), 19 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:50,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:50,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:50,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:43:50,566 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:50,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1950405236, now seen corresponding path program 1 times [2022-09-20 20:43:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:50,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034430338] [2022-09-20 20:43:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:50,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:50,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:50,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034430338] [2022-09-20 20:43:50,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034430338] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:50,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:50,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:43:50,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744072969] [2022-09-20 20:43:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:50,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:43:50,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:43:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:43:50,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 495 [2022-09-20 20:43:50,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 507 transitions, 1296 flow. Second operand has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:50,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:50,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 495 [2022-09-20 20:43:50,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:51,595 INFO L130 PetriNetUnfolder]: 275/5422 cut-off events. [2022-09-20 20:43:51,595 INFO L131 PetriNetUnfolder]: For 202/215 co-relation queries the response was YES. [2022-09-20 20:43:51,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 5422 events. 275/5422 cut-off events. For 202/215 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 41601 event pairs, 2 based on Foata normal form. 5/5163 useless extension candidates. Maximal degree in co-relation 6543. Up to 354 conditions per place. [2022-09-20 20:43:51,649 INFO L137 encePairwiseOnDemand]: 472/495 looper letters, 76 selfloop transitions, 22 changer transitions 0/531 dead transitions. [2022-09-20 20:43:51,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 531 transitions, 1545 flow [2022-09-20 20:43:51,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:43:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:43:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2604 transitions. [2022-09-20 20:43:51,652 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8767676767676768 [2022-09-20 20:43:51,652 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2604 transitions. [2022-09-20 20:43:51,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2604 transitions. [2022-09-20 20:43:51,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:51,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2604 transitions. [2022-09-20 20:43:51,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 434.0) internal successors, (2604), 6 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:51,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 495.0) internal successors, (3465), 7 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:51,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 495.0) internal successors, (3465), 7 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:51,659 INFO L175 Difference]: Start difference. First operand has 486 places, 507 transitions, 1296 flow. Second operand 6 states and 2604 transitions. [2022-09-20 20:43:51,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 531 transitions, 1545 flow [2022-09-20 20:43:51,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 531 transitions, 1523 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-20 20:43:51,668 INFO L231 Difference]: Finished difference. Result has 484 places, 524 transitions, 1424 flow [2022-09-20 20:43:51,669 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1424, PETRI_PLACES=484, PETRI_TRANSITIONS=524} [2022-09-20 20:43:51,669 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 36 predicate places. [2022-09-20 20:43:51,669 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 524 transitions, 1424 flow [2022-09-20 20:43:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 425.0) internal successors, (2125), 5 states have internal predecessors, (2125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:51,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:51,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:51,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:43:51,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:43:51,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash 675793813, now seen corresponding path program 1 times [2022-09-20 20:43:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:51,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104325287] [2022-09-20 20:43:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104325287] [2022-09-20 20:43:53,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104325287] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:53,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:53,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-09-20 20:43:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224794241] [2022-09-20 20:43:53,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:53,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-09-20 20:43:53,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-09-20 20:43:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1342, Unknown=0, NotChecked=0, Total=1482 [2022-09-20 20:43:53,219 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 495 [2022-09-20 20:43:53,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 524 transitions, 1424 flow. Second operand has 39 states, 39 states have (on average 258.9230769230769) internal successors, (10098), 39 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:53,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:53,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 495 [2022-09-20 20:43:53,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:24,516 INFO L130 PetriNetUnfolder]: 25138/81198 cut-off events. [2022-09-20 20:44:24,516 INFO L131 PetriNetUnfolder]: For 11415/11427 co-relation queries the response was YES. [2022-09-20 20:44:24,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143144 conditions, 81198 events. 25138/81198 cut-off events. For 11415/11427 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 901076 event pairs, 3102 based on Foata normal form. 66/77909 useless extension candidates. Maximal degree in co-relation 138212. Up to 20921 conditions per place. [2022-09-20 20:44:25,118 INFO L137 encePairwiseOnDemand]: 424/495 looper letters, 1639 selfloop transitions, 312 changer transitions 0/2201 dead transitions. [2022-09-20 20:44:25,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 2201 transitions, 10567 flow [2022-09-20 20:44:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-09-20 20:44:25,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2022-09-20 20:44:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 25539 transitions. [2022-09-20 20:44:25,139 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5608036890645586 [2022-09-20 20:44:25,139 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 25539 transitions. [2022-09-20 20:44:25,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 25539 transitions. [2022-09-20 20:44:25,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:25,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 25539 transitions. [2022-09-20 20:44:25,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 277.5978260869565) internal successors, (25539), 92 states have internal predecessors, (25539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 495.0) internal successors, (46035), 93 states have internal predecessors, (46035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,239 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 495.0) internal successors, (46035), 93 states have internal predecessors, (46035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,240 INFO L175 Difference]: Start difference. First operand has 484 places, 524 transitions, 1424 flow. Second operand 92 states and 25539 transitions. [2022-09-20 20:44:25,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 2201 transitions, 10567 flow [2022-09-20 20:44:25,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 2201 transitions, 10508 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-09-20 20:44:25,317 INFO L231 Difference]: Finished difference. Result has 628 places, 810 transitions, 3908 flow [2022-09-20 20:44:25,318 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=3908, PETRI_PLACES=628, PETRI_TRANSITIONS=810} [2022-09-20 20:44:25,318 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 180 predicate places. [2022-09-20 20:44:25,318 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 810 transitions, 3908 flow [2022-09-20 20:44:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 258.9230769230769) internal successors, (10098), 39 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:25,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:44:25,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:44:25,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash 31416169, now seen corresponding path program 2 times [2022-09-20 20:44:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:25,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411355348] [2022-09-20 20:44:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:25,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:25,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:25,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411355348] [2022-09-20 20:44:25,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411355348] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:25,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:25,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-20 20:44:25,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262632693] [2022-09-20 20:44:25,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:25,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-20 20:44:25,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:25,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-20 20:44:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-09-20 20:44:25,919 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 495 [2022-09-20 20:44:25,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 810 transitions, 3908 flow. Second operand has 26 states, 26 states have (on average 285.3076923076923) internal successors, (7418), 26 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:25,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 495 [2022-09-20 20:44:25,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:53,179 INFO L130 PetriNetUnfolder]: 23560/86422 cut-off events. [2022-09-20 20:44:53,179 INFO L131 PetriNetUnfolder]: For 114445/114791 co-relation queries the response was YES. [2022-09-20 20:44:55,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199480 conditions, 86422 events. 23560/86422 cut-off events. For 114445/114791 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 1024836 event pairs, 1287 based on Foata normal form. 306/83802 useless extension candidates. Maximal degree in co-relation 196873. Up to 14021 conditions per place. [2022-09-20 20:44:55,417 INFO L137 encePairwiseOnDemand]: 416/495 looper letters, 1373 selfloop transitions, 528 changer transitions 0/2217 dead transitions. [2022-09-20 20:44:55,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 2217 transitions, 14068 flow [2022-09-20 20:44:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-09-20 20:44:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-09-20 20:44:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 21040 transitions. [2022-09-20 20:44:55,433 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6160152247108769 [2022-09-20 20:44:55,433 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 21040 transitions. [2022-09-20 20:44:55,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 21040 transitions. [2022-09-20 20:44:55,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:55,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 21040 transitions. [2022-09-20 20:44:55,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 304.92753623188406) internal successors, (21040), 69 states have internal predecessors, (21040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:55,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 495.0) internal successors, (34650), 70 states have internal predecessors, (34650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:55,503 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 495.0) internal successors, (34650), 70 states have internal predecessors, (34650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:55,503 INFO L175 Difference]: Start difference. First operand has 628 places, 810 transitions, 3908 flow. Second operand 69 states and 21040 transitions. [2022-09-20 20:44:55,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 2217 transitions, 14068 flow [2022-09-20 20:44:56,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 2217 transitions, 13878 flow, removed 72 selfloop flow, removed 23 redundant places. [2022-09-20 20:44:56,073 INFO L231 Difference]: Finished difference. Result has 714 places, 1223 transitions, 8142 flow [2022-09-20 20:44:56,074 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=8142, PETRI_PLACES=714, PETRI_TRANSITIONS=1223} [2022-09-20 20:44:56,075 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 266 predicate places. [2022-09-20 20:44:56,075 INFO L495 AbstractCegarLoop]: Abstraction has has 714 places, 1223 transitions, 8142 flow [2022-09-20 20:44:56,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 285.3076923076923) internal successors, (7418), 26 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:56,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:56,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:56,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:44:56,077 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:44:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash 602997045, now seen corresponding path program 3 times [2022-09-20 20:44:56,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:56,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114219042] [2022-09-20 20:44:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:56,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:57,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:57,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:57,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114219042] [2022-09-20 20:44:57,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114219042] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:57,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:57,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-09-20 20:44:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636508932] [2022-09-20 20:44:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:57,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-09-20 20:44:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-09-20 20:44:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-09-20 20:44:57,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 495 [2022-09-20 20:44:57,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 1223 transitions, 8142 flow. Second operand has 37 states, 37 states have (on average 272.86486486486484) internal successors, (10096), 37 states have internal predecessors, (10096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:57,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:57,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 495 [2022-09-20 20:44:57,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:47,293 INFO L130 PetriNetUnfolder]: 29601/101854 cut-off events. [2022-09-20 20:45:47,293 INFO L131 PetriNetUnfolder]: For 371891/372589 co-relation queries the response was YES. [2022-09-20 20:45:50,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289149 conditions, 101854 events. 29601/101854 cut-off events. For 371891/372589 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 1207758 event pairs, 5530 based on Foata normal form. 420/98783 useless extension candidates. Maximal degree in co-relation 288967. Up to 28111 conditions per place. [2022-09-20 20:45:51,233 INFO L137 encePairwiseOnDemand]: 414/495 looper letters, 1431 selfloop transitions, 755 changer transitions 0/2466 dead transitions. [2022-09-20 20:45:51,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 2466 transitions, 19449 flow [2022-09-20 20:45:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-09-20 20:45:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2022-09-20 20:45:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 29608 transitions. [2022-09-20 20:45:51,250 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5751359751359751 [2022-09-20 20:45:51,250 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 29608 transitions. [2022-09-20 20:45:51,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 29608 transitions. [2022-09-20 20:45:51,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:51,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 29608 transitions. [2022-09-20 20:45:51,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 284.6923076923077) internal successors, (29608), 104 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:51,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 495.0) internal successors, (51975), 105 states have internal predecessors, (51975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:51,324 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 495.0) internal successors, (51975), 105 states have internal predecessors, (51975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:51,324 INFO L175 Difference]: Start difference. First operand has 714 places, 1223 transitions, 8142 flow. Second operand 104 states and 29608 transitions. [2022-09-20 20:45:51,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 2466 transitions, 19449 flow [2022-09-20 20:45:53,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 2466 transitions, 19016 flow, removed 136 selfloop flow, removed 8 redundant places. [2022-09-20 20:45:53,500 INFO L231 Difference]: Finished difference. Result has 829 places, 1600 transitions, 13675 flow [2022-09-20 20:45:53,501 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=7810, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=13675, PETRI_PLACES=829, PETRI_TRANSITIONS=1600} [2022-09-20 20:45:53,502 INFO L287 CegarLoopForPetriNet]: 448 programPoint places, 381 predicate places. [2022-09-20 20:45:53,502 INFO L495 AbstractCegarLoop]: Abstraction has has 829 places, 1600 transitions, 13675 flow [2022-09-20 20:45:53,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 272.86486486486484) internal successors, (10096), 37 states have internal predecessors, (10096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:53,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:53,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:53,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:45:53,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-09-20 20:45:53,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:53,504 INFO L85 PathProgramCache]: Analyzing trace with hash -83810629, now seen corresponding path program 4 times [2022-09-20 20:45:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:53,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83851978] [2022-09-20 20:45:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:54,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83851978] [2022-09-20 20:45:54,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83851978] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:54,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:54,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-09-20 20:45:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100903802] [2022-09-20 20:45:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:54,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-09-20 20:45:54,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-09-20 20:45:54,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1419, Unknown=0, NotChecked=0, Total=1560 [2022-09-20 20:45:54,875 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 495 [2022-09-20 20:45:54,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 1600 transitions, 13675 flow. Second operand has 40 states, 40 states have (on average 258.875) internal successors, (10355), 40 states have internal predecessors, (10355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:54,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:54,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 495 [2022-09-20 20:45:54,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand