/usr/bin/java -Xmx16000000000 -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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:20:39,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:20:39,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:20:39,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:20:39,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:20:39,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:20:39,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:20:39,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:20:39,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:20:39,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:20:39,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:20:39,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:20:39,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:20:39,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:20:39,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:20:39,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:20:39,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:20:39,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:20:39,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:20:39,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:20:39,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:20:39,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:20:39,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:20:39,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:20:39,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:20:39,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:20:39,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:20:39,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:20:39,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:20:39,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:20:39,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:20:39,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:20:39,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:20:39,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:20:39,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:20:39,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:20:39,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:20:39,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:20:39,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:20:39,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:20:39,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:20:39,559 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-After.epf [2022-01-19 13:20:39,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:20:39,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:20:39,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:20:39,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:20:39,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:20:39,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:20:39,579 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:20:39,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:20:39,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:20:39,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:20:39,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:20:39,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:20:39,582 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:20:39,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:20:39,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:20:39,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:20:39,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:20:39,799 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:20:39,801 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:20:39,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2022-01-19 13:20:39,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c222832/d2a9d6ffef5c4440b742655dac5bc66e/FLAGcbaa5578d [2022-01-19 13:20:40,267 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:20:40,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c [2022-01-19 13:20:40,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c222832/d2a9d6ffef5c4440b742655dac5bc66e/FLAGcbaa5578d [2022-01-19 13:20:40,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c222832/d2a9d6ffef5c4440b742655dac5bc66e [2022-01-19 13:20:40,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:20:40,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:20:40,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:20:40,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:20:40,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:20:40,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b02418a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40, skipping insertion in model container [2022-01-19 13:20:40,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:20:40,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:20:40,526 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2022-01-19 13:20:40,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:20:40,541 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:20:40,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-trans.wvr.c[3292,3305] [2022-01-19 13:20:40,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:20:40,577 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:20:40,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40 WrapperNode [2022-01-19 13:20:40,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:20:40,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:20:40,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:20:40,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:20:40,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,624 INFO L137 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 172 [2022-01-19 13:20:40,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:20:40,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:20:40,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:20:40,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:20:40,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:20:40,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:20:40,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:20:40,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:20:40,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (1/1) ... [2022-01-19 13:20:40,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:20:40,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:20:40,703 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) [2022-01-19 13:20:40,711 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 [2022-01-19 13:20:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:20:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:20:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:20:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:20:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:20:40,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:20:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:20:40,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:20:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 13:20:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 13:20:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:20:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 13:20:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:20:40,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:20:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:20:40,740 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 13:20:40,843 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:20:40,845 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:20:41,199 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:20:41,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:20:41,210 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 13:20:41,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:20:41 BoogieIcfgContainer [2022-01-19 13:20:41,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:20:41,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:20:41,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:20:41,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:20:41,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:20:40" (1/3) ... [2022-01-19 13:20:41,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4e5a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:20:41, skipping insertion in model container [2022-01-19 13:20:41,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:20:40" (2/3) ... [2022-01-19 13:20:41,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4e5a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:20:41, skipping insertion in model container [2022-01-19 13:20:41,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:20:41" (3/3) ... [2022-01-19 13:20:41,219 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-trans.wvr.c [2022-01-19 13:20:41,222 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:20:41,222 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:20:41,222 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:20:41,277 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,277 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,278 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,279 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,279 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,280 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,280 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,280 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,287 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,287 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,287 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,288 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,288 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,289 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,289 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,290 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,290 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,291 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,292 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,293 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,293 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,293 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,294 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,294 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,294 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,294 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,294 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,295 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,295 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,295 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,295 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,295 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,296 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,296 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,302 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,303 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,304 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,305 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,306 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,306 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,308 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,308 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,309 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,311 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,314 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,315 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,315 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,315 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,316 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,316 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,317 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,317 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,317 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,317 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,317 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,318 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,318 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,319 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,319 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,320 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,321 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,322 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,323 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,323 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,323 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,323 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,324 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,324 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,324 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,324 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,325 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,326 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,327 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,333 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,334 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,334 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,338 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,339 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,339 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,339 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,340 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,342 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,343 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,345 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,346 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,347 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,347 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,348 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,348 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,348 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,349 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,349 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,351 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,351 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,351 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,351 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,352 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,352 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,352 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,353 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,354 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,355 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,358 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,360 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,361 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,362 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,363 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,364 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,365 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,368 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,368 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,369 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,371 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,375 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,376 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,377 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,378 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,378 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,379 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:20:41,388 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 13:20:41,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:20:41,431 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 13:20:41,432 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 13:20:41,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 308 places, 332 transitions, 688 flow [2022-01-19 13:20:41,542 INFO L129 PetriNetUnfolder]: 34/329 cut-off events. [2022-01-19 13:20:41,542 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:20:41,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 329 events. 34/329 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 506 event pairs, 0 based on Foata normal form. 0/294 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-01-19 13:20:41,550 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 332 transitions, 688 flow [2022-01-19 13:20:41,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 318 transitions, 654 flow [2022-01-19 13:20:41,611 INFO L129 PetriNetUnfolder]: 34/317 cut-off events. [2022-01-19 13:20:41,611 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:20:41,611 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:41,612 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:41,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:41,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1152647938, now seen corresponding path program 1 times [2022-01-19 13:20:41,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:41,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770641245] [2022-01-19 13:20:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:41,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:41,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:41,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770641245] [2022-01-19 13:20:41,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770641245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:41,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:41,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 13:20:41,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067287453] [2022-01-19 13:20:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:41,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 13:20:41,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:41,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 13:20:41,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 13:20:41,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 332 [2022-01-19 13:20:41,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 654 flow. Second operand has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:41,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:41,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 332 [2022-01-19 13:20:41,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:42,019 INFO L129 PetriNetUnfolder]: 21/305 cut-off events. [2022-01-19 13:20:42,019 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 13:20:42,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 305 events. 21/305 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 505 event pairs, 0 based on Foata normal form. 19/296 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-01-19 13:20:42,025 INFO L132 encePairwiseOnDemand]: 319/332 looper letters, 6 selfloop transitions, 0 changer transitions 7/305 dead transitions. [2022-01-19 13:20:42,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 305 transitions, 640 flow [2022-01-19 13:20:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 13:20:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 13:20:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 643 transitions. [2022-01-19 13:20:42,042 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9683734939759037 [2022-01-19 13:20:42,043 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 643 transitions. [2022-01-19 13:20:42,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 643 transitions. [2022-01-19 13:20:42,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:42,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 643 transitions. [2022-01-19 13:20:42,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 321.5) internal successors, (643), 2 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,066 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,067 INFO L186 Difference]: Start difference. First operand has 294 places, 318 transitions, 654 flow. Second operand 2 states and 643 transitions. [2022-01-19 13:20:42,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 305 transitions, 640 flow [2022-01-19 13:20:42,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 305 transitions, 628 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:20:42,081 INFO L242 Difference]: Finished difference. Result has 289 places, 298 transitions, 602 flow [2022-01-19 13:20:42,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=602, PETRI_PLACES=289, PETRI_TRANSITIONS=298} [2022-01-19 13:20:42,088 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -5 predicate places. [2022-01-19 13:20:42,089 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 298 transitions, 602 flow [2022-01-19 13:20:42,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 316.5) internal successors, (633), 2 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:42,090 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:42,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:20:42,090 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:42,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash 694363901, now seen corresponding path program 1 times [2022-01-19 13:20:42,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:42,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929866828] [2022-01-19 13:20:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:42,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:42,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:42,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929866828] [2022-01-19 13:20:42,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929866828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:42,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:42,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:20:42,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830181337] [2022-01-19 13:20:42,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:42,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:20:42,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:20:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:20:42,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-01-19 13:20:42,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 298 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:42,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-01-19 13:20:42,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:42,408 INFO L129 PetriNetUnfolder]: 40/413 cut-off events. [2022-01-19 13:20:42,408 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-01-19 13:20:42,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 413 events. 40/413 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1188 event pairs, 6 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 460. Up to 22 conditions per place. [2022-01-19 13:20:42,413 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 14 selfloop transitions, 2 changer transitions 0/304 dead transitions. [2022-01-19 13:20:42,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 651 flow [2022-01-19 13:20:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:20:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:20:42,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-01-19 13:20:42,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9447791164658634 [2022-01-19 13:20:42,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-01-19 13:20:42,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-01-19 13:20:42,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:42,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-01-19 13:20:42,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,422 INFO L186 Difference]: Start difference. First operand has 289 places, 298 transitions, 602 flow. Second operand 3 states and 941 transitions. [2022-01-19 13:20:42,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 651 flow [2022-01-19 13:20:42,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 304 transitions, 651 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:20:42,431 INFO L242 Difference]: Finished difference. Result has 285 places, 298 transitions, 610 flow [2022-01-19 13:20:42,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=610, PETRI_PLACES=285, PETRI_TRANSITIONS=298} [2022-01-19 13:20:42,432 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -9 predicate places. [2022-01-19 13:20:42,432 INFO L470 AbstractCegarLoop]: Abstraction has has 285 places, 298 transitions, 610 flow [2022-01-19 13:20:42,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:42,433 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:42,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:20:42,434 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash -391066335, now seen corresponding path program 1 times [2022-01-19 13:20:42,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:42,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554630726] [2022-01-19 13:20:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:42,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:42,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:42,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554630726] [2022-01-19 13:20:42,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554630726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:42,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:42,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:20:42,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512670621] [2022-01-19 13:20:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:42,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:20:42,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:42,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:20:42,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:20:42,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-01-19 13:20:42,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 298 transitions, 610 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:42,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-01-19 13:20:42,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:42,684 INFO L129 PetriNetUnfolder]: 49/489 cut-off events. [2022-01-19 13:20:42,684 INFO L130 PetriNetUnfolder]: For 21/25 co-relation queries the response was YES. [2022-01-19 13:20:42,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 489 events. 49/489 cut-off events. For 21/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1590 event pairs, 9 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 549. Up to 31 conditions per place. [2022-01-19 13:20:42,689 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 13 selfloop transitions, 2 changer transitions 0/303 dead transitions. [2022-01-19 13:20:42,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 303 transitions, 654 flow [2022-01-19 13:20:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:20:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:20:42,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 940 transitions. [2022-01-19 13:20:42,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9437751004016064 [2022-01-19 13:20:42,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 940 transitions. [2022-01-19 13:20:42,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 940 transitions. [2022-01-19 13:20:42,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:42,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 940 transitions. [2022-01-19 13:20:42,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,698 INFO L186 Difference]: Start difference. First operand has 285 places, 298 transitions, 610 flow. Second operand 3 states and 940 transitions. [2022-01-19 13:20:42,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 303 transitions, 654 flow [2022-01-19 13:20:42,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 303 transitions, 650 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:42,703 INFO L242 Difference]: Finished difference. Result has 286 places, 298 transitions, 614 flow [2022-01-19 13:20:42,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=614, PETRI_PLACES=286, PETRI_TRANSITIONS=298} [2022-01-19 13:20:42,706 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -8 predicate places. [2022-01-19 13:20:42,706 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 298 transitions, 614 flow [2022-01-19 13:20:42,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:42,707 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:42,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:20:42,707 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash -453812997, now seen corresponding path program 1 times [2022-01-19 13:20:42,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:42,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815168026] [2022-01-19 13:20:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:42,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:42,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:42,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:42,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815168026] [2022-01-19 13:20:42,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815168026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:42,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:42,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:20:42,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904848044] [2022-01-19 13:20:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:42,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:20:42,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:20:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:20:42,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 332 [2022-01-19 13:20:42,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:42,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 332 [2022-01-19 13:20:42,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:42,894 INFO L129 PetriNetUnfolder]: 54/498 cut-off events. [2022-01-19 13:20:42,894 INFO L130 PetriNetUnfolder]: For 45/57 co-relation queries the response was YES. [2022-01-19 13:20:42,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 498 events. 54/498 cut-off events. For 45/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1762 event pairs, 14 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 589. Up to 53 conditions per place. [2022-01-19 13:20:42,899 INFO L132 encePairwiseOnDemand]: 329/332 looper letters, 12 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2022-01-19 13:20:42,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 302 transitions, 653 flow [2022-01-19 13:20:42,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:20:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:20:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2022-01-19 13:20:42,902 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9427710843373494 [2022-01-19 13:20:42,902 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 939 transitions. [2022-01-19 13:20:42,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 939 transitions. [2022-01-19 13:20:42,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:42,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 939 transitions. [2022-01-19 13:20:42,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.0) internal successors, (939), 3 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 332.0) internal successors, (1328), 4 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,907 INFO L186 Difference]: Start difference. First operand has 286 places, 298 transitions, 614 flow. Second operand 3 states and 939 transitions. [2022-01-19 13:20:42,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 302 transitions, 653 flow [2022-01-19 13:20:42,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 302 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:42,913 INFO L242 Difference]: Finished difference. Result has 287 places, 298 transitions, 618 flow [2022-01-19 13:20:42,913 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=287, PETRI_TRANSITIONS=298} [2022-01-19 13:20:42,914 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, -7 predicate places. [2022-01-19 13:20:42,914 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 298 transitions, 618 flow [2022-01-19 13:20:42,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.6666666666667) internal successors, (932), 3 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:42,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:42,915 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:42,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:20:42,916 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1308435147, now seen corresponding path program 1 times [2022-01-19 13:20:42,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:42,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784373497] [2022-01-19 13:20:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:42,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:43,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:43,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784373497] [2022-01-19 13:20:43,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784373497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:43,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:43,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:20:43,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718725497] [2022-01-19 13:20:43,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:43,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:20:43,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:43,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:20:43,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:20:43,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 332 [2022-01-19 13:20:43,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 298 transitions, 618 flow. Second operand has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:43,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:43,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 332 [2022-01-19 13:20:43,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:44,044 INFO L129 PetriNetUnfolder]: 1398/5083 cut-off events. [2022-01-19 13:20:44,044 INFO L130 PetriNetUnfolder]: For 372/372 co-relation queries the response was YES. [2022-01-19 13:20:44,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7456 conditions, 5083 events. 1398/5083 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 47559 event pairs, 539 based on Foata normal form. 8/4452 useless extension candidates. Maximal degree in co-relation 7449. Up to 1226 conditions per place. [2022-01-19 13:20:44,089 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 89 selfloop transitions, 2 changer transitions 8/336 dead transitions. [2022-01-19 13:20:44,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 336 transitions, 904 flow [2022-01-19 13:20:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:20:44,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:20:44,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1850 transitions. [2022-01-19 13:20:44,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7960413080895009 [2022-01-19 13:20:44,094 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1850 transitions. [2022-01-19 13:20:44,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1850 transitions. [2022-01-19 13:20:44,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:44,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1850 transitions. [2022-01-19 13:20:44,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 264.2857142857143) internal successors, (1850), 7 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:44,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:44,104 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:44,104 INFO L186 Difference]: Start difference. First operand has 287 places, 298 transitions, 618 flow. Second operand 7 states and 1850 transitions. [2022-01-19 13:20:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 336 transitions, 904 flow [2022-01-19 13:20:44,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 336 transitions, 900 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:44,110 INFO L242 Difference]: Finished difference. Result has 296 places, 299 transitions, 633 flow [2022-01-19 13:20:44,111 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=633, PETRI_PLACES=296, PETRI_TRANSITIONS=299} [2022-01-19 13:20:44,113 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 2 predicate places. [2022-01-19 13:20:44,113 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 299 transitions, 633 flow [2022-01-19 13:20:44,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:44,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:44,114 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:44,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:20:44,115 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:44,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1507448843, now seen corresponding path program 2 times [2022-01-19 13:20:44,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:44,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323957781] [2022-01-19 13:20:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:44,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:44,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:44,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323957781] [2022-01-19 13:20:44,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323957781] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:44,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:44,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-19 13:20:44,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149513201] [2022-01-19 13:20:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:44,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 13:20:44,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 13:20:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-01-19 13:20:44,472 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 332 [2022-01-19 13:20:44,477 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 299 transitions, 633 flow. Second operand has 17 states, 17 states have (on average 231.88235294117646) internal successors, (3942), 17 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:44,477 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:44,477 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 332 [2022-01-19 13:20:44,477 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:46,185 INFO L129 PetriNetUnfolder]: 1440/6220 cut-off events. [2022-01-19 13:20:46,186 INFO L130 PetriNetUnfolder]: For 1409/1466 co-relation queries the response was YES. [2022-01-19 13:20:46,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 6220 events. 1440/6220 cut-off events. For 1409/1466 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 62363 event pairs, 403 based on Foata normal form. 41/5503 useless extension candidates. Maximal degree in co-relation 9799. Up to 940 conditions per place. [2022-01-19 13:20:46,324 INFO L132 encePairwiseOnDemand]: 307/332 looper letters, 145 selfloop transitions, 29 changer transitions 4/393 dead transitions. [2022-01-19 13:20:46,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 393 transitions, 1225 flow [2022-01-19 13:20:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 13:20:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 13:20:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5421 transitions. [2022-01-19 13:20:46,336 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7099266631744369 [2022-01-19 13:20:46,336 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5421 transitions. [2022-01-19 13:20:46,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5421 transitions. [2022-01-19 13:20:46,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:46,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5421 transitions. [2022-01-19 13:20:46,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 235.69565217391303) internal successors, (5421), 23 states have internal predecessors, (5421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:46,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 332.0) internal successors, (7968), 24 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:46,362 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 332.0) internal successors, (7968), 24 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:46,362 INFO L186 Difference]: Start difference. First operand has 296 places, 299 transitions, 633 flow. Second operand 23 states and 5421 transitions. [2022-01-19 13:20:46,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 393 transitions, 1225 flow [2022-01-19 13:20:46,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 393 transitions, 1205 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 13:20:46,375 INFO L242 Difference]: Finished difference. Result has 323 places, 317 transitions, 788 flow [2022-01-19 13:20:46,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=788, PETRI_PLACES=323, PETRI_TRANSITIONS=317} [2022-01-19 13:20:46,376 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 29 predicate places. [2022-01-19 13:20:46,376 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 317 transitions, 788 flow [2022-01-19 13:20:46,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 231.88235294117646) internal successors, (3942), 17 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:46,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:46,378 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:46,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:20:46,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:46,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash -832404211, now seen corresponding path program 1 times [2022-01-19 13:20:46,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:46,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986745858] [2022-01-19 13:20:46,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:46,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:46,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986745858] [2022-01-19 13:20:46,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986745858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:46,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:46,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:46,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166270881] [2022-01-19 13:20:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:46,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:46,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:46,435 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:20:46,436 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 317 transitions, 788 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:46,436 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:46,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:20:46,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:47,937 INFO L129 PetriNetUnfolder]: 1728/9883 cut-off events. [2022-01-19 13:20:47,937 INFO L130 PetriNetUnfolder]: For 860/984 co-relation queries the response was YES. [2022-01-19 13:20:47,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13150 conditions, 9883 events. 1728/9883 cut-off events. For 860/984 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 119282 event pairs, 484 based on Foata normal form. 4/8388 useless extension candidates. Maximal degree in co-relation 13129. Up to 976 conditions per place. [2022-01-19 13:20:48,017 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 12 changer transitions 0/355 dead transitions. [2022-01-19 13:20:48,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 355 transitions, 1000 flow [2022-01-19 13:20:48,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:48,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-01-19 13:20:48,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-01-19 13:20:48,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-01-19 13:20:48,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-01-19 13:20:48,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:48,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-01-19 13:20:48,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:48,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:48,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:48,027 INFO L186 Difference]: Start difference. First operand has 323 places, 317 transitions, 788 flow. Second operand 5 states and 1534 transitions. [2022-01-19 13:20:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 355 transitions, 1000 flow [2022-01-19 13:20:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 355 transitions, 986 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-01-19 13:20:48,039 INFO L242 Difference]: Finished difference. Result has 322 places, 329 transitions, 862 flow [2022-01-19 13:20:48,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=862, PETRI_PLACES=322, PETRI_TRANSITIONS=329} [2022-01-19 13:20:48,040 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 28 predicate places. [2022-01-19 13:20:48,040 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 329 transitions, 862 flow [2022-01-19 13:20:48,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:48,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:48,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:48,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:20:48,046 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:48,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1996925835, now seen corresponding path program 2 times [2022-01-19 13:20:48,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:48,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284500003] [2022-01-19 13:20:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:48,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:48,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284500003] [2022-01-19 13:20:48,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284500003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:48,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:48,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:48,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974673030] [2022-01-19 13:20:48,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:48,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:48,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:48,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:48,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:20:48,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 329 transitions, 862 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:48,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:48,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:20:48,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:49,609 INFO L129 PetriNetUnfolder]: 1828/12107 cut-off events. [2022-01-19 13:20:49,609 INFO L130 PetriNetUnfolder]: For 2408/2476 co-relation queries the response was YES. [2022-01-19 13:20:49,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16988 conditions, 12107 events. 1828/12107 cut-off events. For 2408/2476 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 152500 event pairs, 660 based on Foata normal form. 34/11250 useless extension candidates. Maximal degree in co-relation 16966. Up to 1389 conditions per place. [2022-01-19 13:20:49,695 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 64 selfloop transitions, 12 changer transitions 0/369 dead transitions. [2022-01-19 13:20:49,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 369 transitions, 1166 flow [2022-01-19 13:20:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1534 transitions. [2022-01-19 13:20:49,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9240963855421687 [2022-01-19 13:20:49,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1534 transitions. [2022-01-19 13:20:49,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1534 transitions. [2022-01-19 13:20:49,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:49,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1534 transitions. [2022-01-19 13:20:49,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.8) internal successors, (1534), 5 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,705 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,705 INFO L186 Difference]: Start difference. First operand has 322 places, 329 transitions, 862 flow. Second operand 5 states and 1534 transitions. [2022-01-19 13:20:49,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 369 transitions, 1166 flow [2022-01-19 13:20:49,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 369 transitions, 1166 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:20:49,719 INFO L242 Difference]: Finished difference. Result has 329 places, 341 transitions, 996 flow [2022-01-19 13:20:49,719 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=996, PETRI_PLACES=329, PETRI_TRANSITIONS=341} [2022-01-19 13:20:49,721 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 35 predicate places. [2022-01-19 13:20:49,721 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 341 transitions, 996 flow [2022-01-19 13:20:49,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,721 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:49,722 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:49,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:20:49,723 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:49,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:49,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1087342295, now seen corresponding path program 1 times [2022-01-19 13:20:49,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:49,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874140983] [2022-01-19 13:20:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:49,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:49,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:49,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874140983] [2022-01-19 13:20:49,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874140983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:49,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:49,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:20:49,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054594997] [2022-01-19 13:20:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:49,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:20:49,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:49,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:20:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:20:49,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 13:20:49,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 341 transitions, 996 flow. Second operand has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:49,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 13:20:49,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:52,338 INFO L129 PetriNetUnfolder]: 4857/18610 cut-off events. [2022-01-19 13:20:52,338 INFO L130 PetriNetUnfolder]: For 8359/8955 co-relation queries the response was YES. [2022-01-19 13:20:52,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32604 conditions, 18610 events. 4857/18610 cut-off events. For 8359/8955 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 240631 event pairs, 1887 based on Foata normal form. 44/17487 useless extension candidates. Maximal degree in co-relation 32578. Up to 5916 conditions per place. [2022-01-19 13:20:52,581 INFO L132 encePairwiseOnDemand]: 318/332 looper letters, 69 selfloop transitions, 28 changer transitions 6/387 dead transitions. [2022-01-19 13:20:52,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 387 transitions, 1405 flow [2022-01-19 13:20:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:20:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:20:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-01-19 13:20:52,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8240103270223752 [2022-01-19 13:20:52,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-01-19 13:20:52,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-01-19 13:20:52,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:52,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-01-19 13:20:52,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:52,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:52,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:52,593 INFO L186 Difference]: Start difference. First operand has 329 places, 341 transitions, 996 flow. Second operand 7 states and 1915 transitions. [2022-01-19 13:20:52,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 387 transitions, 1405 flow [2022-01-19 13:20:52,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 387 transitions, 1401 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-01-19 13:20:52,621 INFO L242 Difference]: Finished difference. Result has 340 places, 366 transitions, 1261 flow [2022-01-19 13:20:52,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1261, PETRI_PLACES=340, PETRI_TRANSITIONS=366} [2022-01-19 13:20:52,622 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 46 predicate places. [2022-01-19 13:20:52,622 INFO L470 AbstractCegarLoop]: Abstraction has has 340 places, 366 transitions, 1261 flow [2022-01-19 13:20:52,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:52,623 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:52,623 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:52,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 13:20:52,623 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:52,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash -901944175, now seen corresponding path program 2 times [2022-01-19 13:20:52,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:52,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214809735] [2022-01-19 13:20:52,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:52,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:52,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:52,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214809735] [2022-01-19 13:20:52,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214809735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:52,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:52,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:20:52,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274233214] [2022-01-19 13:20:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:52,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:20:52,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:20:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:20:52,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 13:20:52,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 366 transitions, 1261 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:52,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:52,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 13:20:52,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:55,250 INFO L129 PetriNetUnfolder]: 4858/18580 cut-off events. [2022-01-19 13:20:55,250 INFO L130 PetriNetUnfolder]: For 20783/24809 co-relation queries the response was YES. [2022-01-19 13:20:55,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41473 conditions, 18580 events. 4858/18580 cut-off events. For 20783/24809 co-relation queries the response was YES. Maximal size of possible extension queue 942. Compared 240490 event pairs, 1784 based on Foata normal form. 450/17891 useless extension candidates. Maximal degree in co-relation 41441. Up to 4807 conditions per place. [2022-01-19 13:20:55,371 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 93 selfloop transitions, 6 changer transitions 26/409 dead transitions. [2022-01-19 13:20:55,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 409 transitions, 1844 flow [2022-01-19 13:20:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:20:55,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:20:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2176 transitions. [2022-01-19 13:20:55,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2022-01-19 13:20:55,381 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2176 transitions. [2022-01-19 13:20:55,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2176 transitions. [2022-01-19 13:20:55,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:55,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2176 transitions. [2022-01-19 13:20:55,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.0) internal successors, (2176), 8 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:55,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:55,396 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:55,396 INFO L186 Difference]: Start difference. First operand has 340 places, 366 transitions, 1261 flow. Second operand 8 states and 2176 transitions. [2022-01-19 13:20:55,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 409 transitions, 1844 flow [2022-01-19 13:20:55,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 409 transitions, 1838 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:55,450 INFO L242 Difference]: Finished difference. Result has 346 places, 364 transitions, 1258 flow [2022-01-19 13:20:55,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1258, PETRI_PLACES=346, PETRI_TRANSITIONS=364} [2022-01-19 13:20:55,452 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 52 predicate places. [2022-01-19 13:20:55,452 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 364 transitions, 1258 flow [2022-01-19 13:20:55,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:55,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:55,453 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:55,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 13:20:55,453 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:55,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1470030149, now seen corresponding path program 1 times [2022-01-19 13:20:55,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:55,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802488131] [2022-01-19 13:20:55,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:55,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:55,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:55,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802488131] [2022-01-19 13:20:55,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802488131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:55,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:55,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:55,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631319384] [2022-01-19 13:20:55,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:55,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:55,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:55,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:20:55,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 364 transitions, 1258 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:55,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:55,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:20:55,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:57,869 INFO L129 PetriNetUnfolder]: 3141/19700 cut-off events. [2022-01-19 13:20:57,870 INFO L130 PetriNetUnfolder]: For 13565/14937 co-relation queries the response was YES. [2022-01-19 13:20:57,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36293 conditions, 19700 events. 3141/19700 cut-off events. For 13565/14937 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 279230 event pairs, 1342 based on Foata normal form. 16/18167 useless extension candidates. Maximal degree in co-relation 36259. Up to 2389 conditions per place. [2022-01-19 13:20:57,988 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 65 selfloop transitions, 6 changer transitions 3/390 dead transitions. [2022-01-19 13:20:57,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 390 transitions, 1528 flow [2022-01-19 13:20:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:20:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:20:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1220 transitions. [2022-01-19 13:20:57,992 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186746987951807 [2022-01-19 13:20:57,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1220 transitions. [2022-01-19 13:20:57,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1220 transitions. [2022-01-19 13:20:57,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:57,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1220 transitions. [2022-01-19 13:20:57,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:57,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:57,997 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:57,997 INFO L186 Difference]: Start difference. First operand has 346 places, 364 transitions, 1258 flow. Second operand 4 states and 1220 transitions. [2022-01-19 13:20:57,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 390 transitions, 1528 flow [2022-01-19 13:20:58,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 390 transitions, 1519 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 13:20:58,137 INFO L242 Difference]: Finished difference. Result has 345 places, 366 transitions, 1290 flow [2022-01-19 13:20:58,137 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1290, PETRI_PLACES=345, PETRI_TRANSITIONS=366} [2022-01-19 13:20:58,138 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 51 predicate places. [2022-01-19 13:20:58,138 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 366 transitions, 1290 flow [2022-01-19 13:20:58,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,138 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:58,138 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:58,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 13:20:58,139 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:20:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1696890719, now seen corresponding path program 1 times [2022-01-19 13:20:58,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:58,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724106086] [2022-01-19 13:20:58,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:58,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:58,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724106086] [2022-01-19 13:20:58,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724106086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:58,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:58,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:20:58,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235249075] [2022-01-19 13:20:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:58,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:20:58,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:20:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:20:58,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 13:20:58,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 366 transitions, 1290 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:58,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 13:20:58,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:01,393 INFO L129 PetriNetUnfolder]: 5864/22978 cut-off events. [2022-01-19 13:21:01,393 INFO L130 PetriNetUnfolder]: For 28051/31928 co-relation queries the response was YES. [2022-01-19 13:21:01,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50977 conditions, 22978 events. 5864/22978 cut-off events. For 28051/31928 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 315000 event pairs, 2891 based on Foata normal form. 459/22007 useless extension candidates. Maximal degree in co-relation 50943. Up to 7734 conditions per place. [2022-01-19 13:21:01,526 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 130 selfloop transitions, 7 changer transitions 31/456 dead transitions. [2022-01-19 13:21:01,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 456 transitions, 2344 flow [2022-01-19 13:21:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:21:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:21:01,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2177 transitions. [2022-01-19 13:21:01,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8196536144578314 [2022-01-19 13:21:01,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2177 transitions. [2022-01-19 13:21:01,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2177 transitions. [2022-01-19 13:21:01,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:01,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2177 transitions. [2022-01-19 13:21:01,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.125) internal successors, (2177), 8 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:01,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:01,541 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:01,541 INFO L186 Difference]: Start difference. First operand has 345 places, 366 transitions, 1290 flow. Second operand 8 states and 2177 transitions. [2022-01-19 13:21:01,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 456 transitions, 2344 flow [2022-01-19 13:21:01,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 456 transitions, 2340 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:21:01,662 INFO L242 Difference]: Finished difference. Result has 356 places, 370 transitions, 1342 flow [2022-01-19 13:21:01,662 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1342, PETRI_PLACES=356, PETRI_TRANSITIONS=370} [2022-01-19 13:21:01,663 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 62 predicate places. [2022-01-19 13:21:01,663 INFO L470 AbstractCegarLoop]: Abstraction has has 356 places, 370 transitions, 1342 flow [2022-01-19 13:21:01,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:01,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:01,664 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:01,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 13:21:01,664 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:01,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1989539289, now seen corresponding path program 2 times [2022-01-19 13:21:01,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:01,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331342898] [2022-01-19 13:21:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:01,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:01,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:01,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:01,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331342898] [2022-01-19 13:21:01,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331342898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:01,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:01,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:01,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651076270] [2022-01-19 13:21:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:01,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:01,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:01,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:01,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 370 transitions, 1342 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:01,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:01,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:01,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:04,549 INFO L129 PetriNetUnfolder]: 3297/22054 cut-off events. [2022-01-19 13:21:04,549 INFO L130 PetriNetUnfolder]: For 17373/19525 co-relation queries the response was YES. [2022-01-19 13:21:04,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42508 conditions, 22054 events. 3297/22054 cut-off events. For 17373/19525 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 323425 event pairs, 1570 based on Foata normal form. 188/20579 useless extension candidates. Maximal degree in co-relation 42469. Up to 2687 conditions per place. [2022-01-19 13:21:04,689 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 50 selfloop transitions, 6 changer transitions 11/387 dead transitions. [2022-01-19 13:21:04,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 387 transitions, 1554 flow [2022-01-19 13:21:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:21:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:21:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1220 transitions. [2022-01-19 13:21:04,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9186746987951807 [2022-01-19 13:21:04,692 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1220 transitions. [2022-01-19 13:21:04,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1220 transitions. [2022-01-19 13:21:04,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:04,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1220 transitions. [2022-01-19 13:21:04,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:04,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:04,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:04,696 INFO L186 Difference]: Start difference. First operand has 356 places, 370 transitions, 1342 flow. Second operand 4 states and 1220 transitions. [2022-01-19 13:21:04,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 387 transitions, 1554 flow [2022-01-19 13:21:04,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 387 transitions, 1545 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-01-19 13:21:04,923 INFO L242 Difference]: Finished difference. Result has 355 places, 366 transitions, 1329 flow [2022-01-19 13:21:04,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1329, PETRI_PLACES=355, PETRI_TRANSITIONS=366} [2022-01-19 13:21:04,924 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 61 predicate places. [2022-01-19 13:21:04,924 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 366 transitions, 1329 flow [2022-01-19 13:21:04,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:04,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:04,925 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:04,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 13:21:04,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash 577724799, now seen corresponding path program 3 times [2022-01-19 13:21:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:04,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741523432] [2022-01-19 13:21:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:04,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:05,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:05,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741523432] [2022-01-19 13:21:05,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741523432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:05,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:05,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:05,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91801881] [2022-01-19 13:21:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:05,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:05,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:05,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:05,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:05,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:05,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 366 transitions, 1329 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:05,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:05,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:05,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:07,809 INFO L129 PetriNetUnfolder]: 3293/22177 cut-off events. [2022-01-19 13:21:07,809 INFO L130 PetriNetUnfolder]: For 17222/19238 co-relation queries the response was YES. [2022-01-19 13:21:07,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41077 conditions, 22177 events. 3293/22177 cut-off events. For 17222/19238 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 320893 event pairs, 1147 based on Foata normal form. 180/20749 useless extension candidates. Maximal degree in co-relation 41038. Up to 2161 conditions per place. [2022-01-19 13:21:08,007 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 46 selfloop transitions, 10 changer transitions 3/379 dead transitions. [2022-01-19 13:21:08,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 379 transitions, 1501 flow [2022-01-19 13:21:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:21:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:21:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1218 transitions. [2022-01-19 13:21:08,010 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9171686746987951 [2022-01-19 13:21:08,010 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1218 transitions. [2022-01-19 13:21:08,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1218 transitions. [2022-01-19 13:21:08,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:08,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1218 transitions. [2022-01-19 13:21:08,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.5) internal successors, (1218), 4 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:08,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:08,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:08,015 INFO L186 Difference]: Start difference. First operand has 355 places, 366 transitions, 1329 flow. Second operand 4 states and 1218 transitions. [2022-01-19 13:21:08,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 379 transitions, 1501 flow [2022-01-19 13:21:08,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 379 transitions, 1489 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 13:21:08,195 INFO L242 Difference]: Finished difference. Result has 357 places, 365 transitions, 1336 flow [2022-01-19 13:21:08,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1336, PETRI_PLACES=357, PETRI_TRANSITIONS=365} [2022-01-19 13:21:08,196 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 63 predicate places. [2022-01-19 13:21:08,196 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 365 transitions, 1336 flow [2022-01-19 13:21:08,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:08,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:08,197 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:08,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 13:21:08,197 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:08,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:08,197 INFO L85 PathProgramCache]: Analyzing trace with hash -96806065, now seen corresponding path program 1 times [2022-01-19 13:21:08,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:08,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561441326] [2022-01-19 13:21:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:08,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:08,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:08,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561441326] [2022-01-19 13:21:08,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561441326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:08,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:08,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:08,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051226659] [2022-01-19 13:21:08,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:08,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:08,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:08,248 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:08,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 365 transitions, 1336 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:08,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:08,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:08,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:10,931 INFO L129 PetriNetUnfolder]: 3285/21541 cut-off events. [2022-01-19 13:21:10,932 INFO L130 PetriNetUnfolder]: For 22840/25387 co-relation queries the response was YES. [2022-01-19 13:21:11,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43436 conditions, 21541 events. 3285/21541 cut-off events. For 22840/25387 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 315141 event pairs, 906 based on Foata normal form. 276/20383 useless extension candidates. Maximal degree in co-relation 43397. Up to 2693 conditions per place. [2022-01-19 13:21:11,064 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 65 selfloop transitions, 14 changer transitions 9/408 dead transitions. [2022-01-19 13:21:11,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 408 transitions, 1771 flow [2022-01-19 13:21:11,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1533 transitions. [2022-01-19 13:21:11,067 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9234939759036145 [2022-01-19 13:21:11,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1533 transitions. [2022-01-19 13:21:11,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1533 transitions. [2022-01-19 13:21:11,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:11,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1533 transitions. [2022-01-19 13:21:11,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 306.6) internal successors, (1533), 5 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:11,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:11,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:11,072 INFO L186 Difference]: Start difference. First operand has 357 places, 365 transitions, 1336 flow. Second operand 5 states and 1533 transitions. [2022-01-19 13:21:11,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 408 transitions, 1771 flow [2022-01-19 13:21:11,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 408 transitions, 1751 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 13:21:11,285 INFO L242 Difference]: Finished difference. Result has 362 places, 370 transitions, 1419 flow [2022-01-19 13:21:11,285 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1419, PETRI_PLACES=362, PETRI_TRANSITIONS=370} [2022-01-19 13:21:11,285 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 68 predicate places. [2022-01-19 13:21:11,285 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 370 transitions, 1419 flow [2022-01-19 13:21:11,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:11,286 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:11,286 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:11,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 13:21:11,286 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1152912389, now seen corresponding path program 1 times [2022-01-19 13:21:11,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:11,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960020130] [2022-01-19 13:21:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:11,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:11,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:11,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960020130] [2022-01-19 13:21:11,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960020130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:11,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:11,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:21:11,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971278895] [2022-01-19 13:21:11,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:11,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:21:11,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:11,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:21:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:21:11,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 332 [2022-01-19 13:21:11,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 370 transitions, 1419 flow. Second operand has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:11,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:11,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 332 [2022-01-19 13:21:11,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:14,507 INFO L129 PetriNetUnfolder]: 5105/21837 cut-off events. [2022-01-19 13:21:14,507 INFO L130 PetriNetUnfolder]: For 33726/39330 co-relation queries the response was YES. [2022-01-19 13:21:14,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51494 conditions, 21837 events. 5105/21837 cut-off events. For 33726/39330 co-relation queries the response was YES. Maximal size of possible extension queue 1105. Compared 303186 event pairs, 2307 based on Foata normal form. 1024/21697 useless extension candidates. Maximal degree in co-relation 51454. Up to 6780 conditions per place. [2022-01-19 13:21:14,641 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 118 selfloop transitions, 10 changer transitions 20/437 dead transitions. [2022-01-19 13:21:14,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 437 transitions, 2140 flow [2022-01-19 13:21:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:21:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:21:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2178 transitions. [2022-01-19 13:21:14,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8200301204819277 [2022-01-19 13:21:14,644 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2178 transitions. [2022-01-19 13:21:14,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2178 transitions. [2022-01-19 13:21:14,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:14,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2178 transitions. [2022-01-19 13:21:14,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 272.25) internal successors, (2178), 8 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:14,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:14,652 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:14,652 INFO L186 Difference]: Start difference. First operand has 362 places, 370 transitions, 1419 flow. Second operand 8 states and 2178 transitions. [2022-01-19 13:21:14,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 437 transitions, 2140 flow [2022-01-19 13:21:14,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 437 transitions, 2136 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-01-19 13:21:14,822 INFO L242 Difference]: Finished difference. Result has 373 places, 377 transitions, 1524 flow [2022-01-19 13:21:14,823 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1524, PETRI_PLACES=373, PETRI_TRANSITIONS=377} [2022-01-19 13:21:14,823 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 79 predicate places. [2022-01-19 13:21:14,823 INFO L470 AbstractCegarLoop]: Abstraction has has 373 places, 377 transitions, 1524 flow [2022-01-19 13:21:14,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 268.0) internal successors, (1876), 7 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:14,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:14,824 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:14,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 13:21:14,824 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:14,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash -824429605, now seen corresponding path program 3 times [2022-01-19 13:21:14,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:14,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137469117] [2022-01-19 13:21:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:14,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:14,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:14,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137469117] [2022-01-19 13:21:14,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137469117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:14,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:14,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:14,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796968395] [2022-01-19 13:21:14,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:14,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:14,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:14,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:14,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 377 transitions, 1524 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:14,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:14,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:14,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:17,827 INFO L129 PetriNetUnfolder]: 3255/21298 cut-off events. [2022-01-19 13:21:17,827 INFO L130 PetriNetUnfolder]: For 22455/24451 co-relation queries the response was YES. [2022-01-19 13:21:17,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42625 conditions, 21298 events. 3255/21298 cut-off events. For 22455/24451 co-relation queries the response was YES. Maximal size of possible extension queue 955. Compared 312128 event pairs, 806 based on Foata normal form. 358/20174 useless extension candidates. Maximal degree in co-relation 42579. Up to 2238 conditions per place. [2022-01-19 13:21:17,944 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 53 selfloop transitions, 22 changer transitions 22/416 dead transitions. [2022-01-19 13:21:17,944 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 416 transitions, 1912 flow [2022-01-19 13:21:17,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2022-01-19 13:21:17,947 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246987951807228 [2022-01-19 13:21:17,947 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2022-01-19 13:21:17,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2022-01-19 13:21:17,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:17,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2022-01-19 13:21:17,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:17,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:17,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:17,952 INFO L186 Difference]: Start difference. First operand has 373 places, 377 transitions, 1524 flow. Second operand 5 states and 1535 transitions. [2022-01-19 13:21:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 416 transitions, 1912 flow [2022-01-19 13:21:18,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 416 transitions, 1901 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 13:21:18,168 INFO L242 Difference]: Finished difference. Result has 374 places, 373 transitions, 1536 flow [2022-01-19 13:21:18,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1536, PETRI_PLACES=374, PETRI_TRANSITIONS=373} [2022-01-19 13:21:18,169 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 80 predicate places. [2022-01-19 13:21:18,169 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 373 transitions, 1536 flow [2022-01-19 13:21:18,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:18,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:18,169 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:18,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 13:21:18,170 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:18,170 INFO L85 PathProgramCache]: Analyzing trace with hash -521417833, now seen corresponding path program 1 times [2022-01-19 13:21:18,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:18,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656585236] [2022-01-19 13:21:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:18,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:18,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656585236] [2022-01-19 13:21:18,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656585236] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:21:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972561684] [2022-01-19 13:21:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:18,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:21:18,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:21:18,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:21:18,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 13:21:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:18,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 13:21:18,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:21:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:19,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:21:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972561684] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:21:19,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:21:19,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14, 14] total 31 [2022-01-19 13:21:19,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78620534] [2022-01-19 13:21:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:21:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:21:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2022-01-19 13:21:19,872 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 332 [2022-01-19 13:21:19,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 373 transitions, 1536 flow. Second operand has 14 states, 14 states have (on average 231.0) internal successors, (3234), 14 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:19,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:19,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 332 [2022-01-19 13:21:19,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:26,304 INFO L129 PetriNetUnfolder]: 9411/43425 cut-off events. [2022-01-19 13:21:26,304 INFO L130 PetriNetUnfolder]: For 48610/54036 co-relation queries the response was YES. [2022-01-19 13:21:26,627 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85860 conditions, 43425 events. 9411/43425 cut-off events. For 48610/54036 co-relation queries the response was YES. Maximal size of possible extension queue 1636. Compared 660519 event pairs, 5233 based on Foata normal form. 1295/39624 useless extension candidates. Maximal degree in co-relation 85814. Up to 4862 conditions per place. [2022-01-19 13:21:26,700 INFO L132 encePairwiseOnDemand]: 305/332 looper letters, 223 selfloop transitions, 38 changer transitions 12/528 dead transitions. [2022-01-19 13:21:26,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 528 transitions, 2790 flow [2022-01-19 13:21:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 13:21:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 13:21:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4509 transitions. [2022-01-19 13:21:26,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7148065948002537 [2022-01-19 13:21:26,704 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4509 transitions. [2022-01-19 13:21:26,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4509 transitions. [2022-01-19 13:21:26,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:26,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4509 transitions. [2022-01-19 13:21:26,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 237.31578947368422) internal successors, (4509), 19 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:26,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:26,714 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:26,714 INFO L186 Difference]: Start difference. First operand has 374 places, 373 transitions, 1536 flow. Second operand 19 states and 4509 transitions. [2022-01-19 13:21:26,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 528 transitions, 2790 flow [2022-01-19 13:21:27,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 528 transitions, 2731 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-01-19 13:21:27,045 INFO L242 Difference]: Finished difference. Result has 395 places, 391 transitions, 1689 flow [2022-01-19 13:21:27,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1689, PETRI_PLACES=395, PETRI_TRANSITIONS=391} [2022-01-19 13:21:27,045 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 101 predicate places. [2022-01-19 13:21:27,045 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 391 transitions, 1689 flow [2022-01-19 13:21:27,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 231.0) internal successors, (3234), 14 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:27,046 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:27,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:27,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 13:21:27,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 13:21:27,256 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:27,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1793301877, now seen corresponding path program 2 times [2022-01-19 13:21:27,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:27,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553141115] [2022-01-19 13:21:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:27,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:27,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:27,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553141115] [2022-01-19 13:21:27,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553141115] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:21:27,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238918194] [2022-01-19 13:21:27,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 13:21:27,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:21:27,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:21:27,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:21:27,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 13:21:27,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 13:21:27,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:21:27,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 13:21:27,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:21:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:21:28,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:21:28,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238918194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:28,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:21:28,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 17 [2022-01-19 13:21:28,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386335242] [2022-01-19 13:21:28,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:28,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:21:28,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:28,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:21:28,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-01-19 13:21:28,050 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 332 [2022-01-19 13:21:28,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 391 transitions, 1689 flow. Second operand has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:28,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:28,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 332 [2022-01-19 13:21:28,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:35,140 INFO L129 PetriNetUnfolder]: 10012/48053 cut-off events. [2022-01-19 13:21:35,140 INFO L130 PetriNetUnfolder]: For 65285/71275 co-relation queries the response was YES. [2022-01-19 13:21:35,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98665 conditions, 48053 events. 10012/48053 cut-off events. For 65285/71275 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 746335 event pairs, 5064 based on Foata normal form. 1567/44430 useless extension candidates. Maximal degree in co-relation 98615. Up to 13530 conditions per place. [2022-01-19 13:21:35,619 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 130 selfloop transitions, 5 changer transitions 13/438 dead transitions. [2022-01-19 13:21:35,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 438 transitions, 2312 flow [2022-01-19 13:21:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:21:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:21:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1847 transitions. [2022-01-19 13:21:35,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.794750430292599 [2022-01-19 13:21:35,621 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1847 transitions. [2022-01-19 13:21:35,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1847 transitions. [2022-01-19 13:21:35,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:35,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1847 transitions. [2022-01-19 13:21:35,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.85714285714283) internal successors, (1847), 7 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:35,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:35,625 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:35,625 INFO L186 Difference]: Start difference. First operand has 395 places, 391 transitions, 1689 flow. Second operand 7 states and 1847 transitions. [2022-01-19 13:21:35,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 438 transitions, 2312 flow [2022-01-19 13:21:36,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 438 transitions, 2265 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-01-19 13:21:36,058 INFO L242 Difference]: Finished difference. Result has 395 places, 393 transitions, 1716 flow [2022-01-19 13:21:36,058 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1716, PETRI_PLACES=395, PETRI_TRANSITIONS=393} [2022-01-19 13:21:36,059 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 101 predicate places. [2022-01-19 13:21:36,059 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 393 transitions, 1716 flow [2022-01-19 13:21:36,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 257.42857142857144) internal successors, (1802), 7 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:36,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:36,059 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:36,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 13:21:36,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:21:36,268 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:36,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:36,268 INFO L85 PathProgramCache]: Analyzing trace with hash -347700357, now seen corresponding path program 3 times [2022-01-19 13:21:36,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:36,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081182698] [2022-01-19 13:21:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:36,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:21:36,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:36,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081182698] [2022-01-19 13:21:36,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081182698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:36,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:36,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 13:21:36,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103580198] [2022-01-19 13:21:36,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:36,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 13:21:36,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 13:21:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 13:21:36,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-01-19 13:21:36,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 393 transitions, 1716 flow. Second operand has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:36,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:36,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-01-19 13:21:36,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:44,231 INFO L129 PetriNetUnfolder]: 9072/49802 cut-off events. [2022-01-19 13:21:44,231 INFO L130 PetriNetUnfolder]: For 85245/91138 co-relation queries the response was YES. [2022-01-19 13:21:44,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104557 conditions, 49802 events. 9072/49802 cut-off events. For 85245/91138 co-relation queries the response was YES. Maximal size of possible extension queue 1874. Compared 802615 event pairs, 2714 based on Foata normal form. 1051/45840 useless extension candidates. Maximal degree in co-relation 104505. Up to 5463 conditions per place. [2022-01-19 13:21:44,740 INFO L132 encePairwiseOnDemand]: 311/332 looper letters, 184 selfloop transitions, 56 changer transitions 12/512 dead transitions. [2022-01-19 13:21:44,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 512 transitions, 3123 flow [2022-01-19 13:21:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:21:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:21:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4768 transitions. [2022-01-19 13:21:44,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7180722891566265 [2022-01-19 13:21:44,743 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4768 transitions. [2022-01-19 13:21:44,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4768 transitions. [2022-01-19 13:21:44,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:44,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4768 transitions. [2022-01-19 13:21:44,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 238.4) internal successors, (4768), 20 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:44,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:44,751 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 332.0) internal successors, (6972), 21 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:44,751 INFO L186 Difference]: Start difference. First operand has 395 places, 393 transitions, 1716 flow. Second operand 20 states and 4768 transitions. [2022-01-19 13:21:44,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 512 transitions, 3123 flow [2022-01-19 13:21:45,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 512 transitions, 3094 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-01-19 13:21:45,664 INFO L242 Difference]: Finished difference. Result has 415 places, 420 transitions, 2145 flow [2022-01-19 13:21:45,664 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2145, PETRI_PLACES=415, PETRI_TRANSITIONS=420} [2022-01-19 13:21:45,665 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 121 predicate places. [2022-01-19 13:21:45,665 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 420 transitions, 2145 flow [2022-01-19 13:21:45,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 235.78571428571428) internal successors, (3301), 14 states have internal predecessors, (3301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:45,665 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:45,665 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:45,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 13:21:45,666 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:45,666 INFO L85 PathProgramCache]: Analyzing trace with hash -187297197, now seen corresponding path program 1 times [2022-01-19 13:21:45,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:45,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863518782] [2022-01-19 13:21:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:45,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:21:45,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:45,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863518782] [2022-01-19 13:21:45,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863518782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:45,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:45,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:45,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519589888] [2022-01-19 13:21:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:45,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:45,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:45,747 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:45,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 420 transitions, 2145 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:45,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:45,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:45,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:51,557 INFO L129 PetriNetUnfolder]: 4752/38142 cut-off events. [2022-01-19 13:21:51,557 INFO L130 PetriNetUnfolder]: For 62597/67704 co-relation queries the response was YES. [2022-01-19 13:21:51,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82594 conditions, 38142 events. 4752/38142 cut-off events. For 62597/67704 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 632596 event pairs, 1800 based on Foata normal form. 499/36007 useless extension candidates. Maximal degree in co-relation 82536. Up to 3683 conditions per place. [2022-01-19 13:21:51,880 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 60 selfloop transitions, 14 changer transitions 1/441 dead transitions. [2022-01-19 13:21:51,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 441 transitions, 2390 flow [2022-01-19 13:21:51,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1523 transitions. [2022-01-19 13:21:51,882 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9174698795180722 [2022-01-19 13:21:51,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1523 transitions. [2022-01-19 13:21:51,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1523 transitions. [2022-01-19 13:21:51,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:51,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1523 transitions. [2022-01-19 13:21:51,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.6) internal successors, (1523), 5 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:51,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:51,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:51,885 INFO L186 Difference]: Start difference. First operand has 415 places, 420 transitions, 2145 flow. Second operand 5 states and 1523 transitions. [2022-01-19 13:21:51,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 441 transitions, 2390 flow [2022-01-19 13:21:52,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 441 transitions, 2330 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-01-19 13:21:52,550 INFO L242 Difference]: Finished difference. Result has 408 places, 424 transitions, 2174 flow [2022-01-19 13:21:52,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2085, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2174, PETRI_PLACES=408, PETRI_TRANSITIONS=424} [2022-01-19 13:21:52,551 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 114 predicate places. [2022-01-19 13:21:52,551 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 424 transitions, 2174 flow [2022-01-19 13:21:52,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:52,552 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:52,552 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:52,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 13:21:52,552 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:52,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash 675677403, now seen corresponding path program 1 times [2022-01-19 13:21:52,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:52,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605213230] [2022-01-19 13:21:52,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:52,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:21:52,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:52,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605213230] [2022-01-19 13:21:52,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605213230] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:52,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:52,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:52,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242184684] [2022-01-19 13:21:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:52,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:52,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:52,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:52,598 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:52,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 424 transitions, 2174 flow. Second operand has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:52,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:52,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:52,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:58,753 INFO L129 PetriNetUnfolder]: 4847/40832 cut-off events. [2022-01-19 13:21:58,754 INFO L130 PetriNetUnfolder]: For 73894/79082 co-relation queries the response was YES. [2022-01-19 13:21:59,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87708 conditions, 40832 events. 4847/40832 cut-off events. For 73894/79082 co-relation queries the response was YES. Maximal size of possible extension queue 1705. Compared 687041 event pairs, 1416 based on Foata normal form. 502/38598 useless extension candidates. Maximal degree in co-relation 87652. Up to 4247 conditions per place. [2022-01-19 13:21:59,084 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 68 selfloop transitions, 30 changer transitions 8/472 dead transitions. [2022-01-19 13:21:59,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 472 transitions, 2748 flow [2022-01-19 13:21:59,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1535 transitions. [2022-01-19 13:21:59,086 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9246987951807228 [2022-01-19 13:21:59,086 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1535 transitions. [2022-01-19 13:21:59,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1535 transitions. [2022-01-19 13:21:59,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:59,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1535 transitions. [2022-01-19 13:21:59,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:59,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:59,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:59,089 INFO L186 Difference]: Start difference. First operand has 408 places, 424 transitions, 2174 flow. Second operand 5 states and 1535 transitions. [2022-01-19 13:21:59,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 472 transitions, 2748 flow [2022-01-19 13:21:59,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 472 transitions, 2735 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 13:21:59,823 INFO L242 Difference]: Finished difference. Result has 415 places, 440 transitions, 2477 flow [2022-01-19 13:21:59,823 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2477, PETRI_PLACES=415, PETRI_TRANSITIONS=440} [2022-01-19 13:21:59,824 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 121 predicate places. [2022-01-19 13:21:59,824 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 440 transitions, 2477 flow [2022-01-19 13:21:59,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.25) internal successors, (1193), 4 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:59,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:59,824 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:59,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 13:21:59,824 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:21:59,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash 526203443, now seen corresponding path program 2 times [2022-01-19 13:21:59,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:59,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919969341] [2022-01-19 13:21:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:59,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:21:59,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:59,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919969341] [2022-01-19 13:21:59,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919969341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:59,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:59,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:59,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700739820] [2022-01-19 13:21:59,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:59,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:59,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:59,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:59,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:59,877 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:21:59,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 440 transitions, 2477 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:59,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:59,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:21:59,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:05,785 INFO L129 PetriNetUnfolder]: 4450/39240 cut-off events. [2022-01-19 13:22:05,785 INFO L130 PetriNetUnfolder]: For 77648/83196 co-relation queries the response was YES. [2022-01-19 13:22:06,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84543 conditions, 39240 events. 4450/39240 cut-off events. For 77648/83196 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 652108 event pairs, 1725 based on Foata normal form. 474/37150 useless extension candidates. Maximal degree in co-relation 84484. Up to 3953 conditions per place. [2022-01-19 13:22:06,125 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 75 selfloop transitions, 17 changer transitions 1/459 dead transitions. [2022-01-19 13:22:06,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 459 transitions, 2708 flow [2022-01-19 13:22:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:22:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:22:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1528 transitions. [2022-01-19 13:22:06,127 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9204819277108434 [2022-01-19 13:22:06,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1528 transitions. [2022-01-19 13:22:06,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1528 transitions. [2022-01-19 13:22:06,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:06,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1528 transitions. [2022-01-19 13:22:06,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.6) internal successors, (1528), 5 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:06,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:06,130 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:06,130 INFO L186 Difference]: Start difference. First operand has 415 places, 440 transitions, 2477 flow. Second operand 5 states and 1528 transitions. [2022-01-19 13:22:06,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 459 transitions, 2708 flow [2022-01-19 13:22:06,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 459 transitions, 2700 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 13:22:06,763 INFO L242 Difference]: Finished difference. Result has 421 places, 439 transitions, 2508 flow [2022-01-19 13:22:06,763 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2438, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2508, PETRI_PLACES=421, PETRI_TRANSITIONS=439} [2022-01-19 13:22:06,763 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 127 predicate places. [2022-01-19 13:22:06,763 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 439 transitions, 2508 flow [2022-01-19 13:22:06,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:06,764 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:06,764 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:06,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 13:22:06,764 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1430628829, now seen corresponding path program 3 times [2022-01-19 13:22:06,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:06,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898669909] [2022-01-19 13:22:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:06,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:22:06,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:06,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898669909] [2022-01-19 13:22:06,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898669909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:06,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:06,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:22:06,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894844719] [2022-01-19 13:22:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:06,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:22:06,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:22:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:22:06,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:22:06,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 439 transitions, 2508 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:06,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:06,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:22:06,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:12,929 INFO L129 PetriNetUnfolder]: 4512/39886 cut-off events. [2022-01-19 13:22:12,929 INFO L130 PetriNetUnfolder]: For 79764/85880 co-relation queries the response was YES. [2022-01-19 13:22:13,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86665 conditions, 39886 events. 4512/39886 cut-off events. For 79764/85880 co-relation queries the response was YES. Maximal size of possible extension queue 1577. Compared 663884 event pairs, 2053 based on Foata normal form. 342/37500 useless extension candidates. Maximal degree in co-relation 86604. Up to 5064 conditions per place. [2022-01-19 13:22:13,285 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 71 selfloop transitions, 7 changer transitions 3/447 dead transitions. [2022-01-19 13:22:13,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 447 transitions, 2686 flow [2022-01-19 13:22:13,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:22:13,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:22:13,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1213 transitions. [2022-01-19 13:22:13,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9134036144578314 [2022-01-19 13:22:13,286 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1213 transitions. [2022-01-19 13:22:13,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1213 transitions. [2022-01-19 13:22:13,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:13,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1213 transitions. [2022-01-19 13:22:13,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 303.25) internal successors, (1213), 4 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:13,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:13,288 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:13,288 INFO L186 Difference]: Start difference. First operand has 421 places, 439 transitions, 2508 flow. Second operand 4 states and 1213 transitions. [2022-01-19 13:22:13,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 447 transitions, 2686 flow [2022-01-19 13:22:13,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 447 transitions, 2686 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:22:13,963 INFO L242 Difference]: Finished difference. Result has 425 places, 437 transitions, 2502 flow [2022-01-19 13:22:13,963 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2502, PETRI_PLACES=425, PETRI_TRANSITIONS=437} [2022-01-19 13:22:13,964 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 131 predicate places. [2022-01-19 13:22:13,964 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 437 transitions, 2502 flow [2022-01-19 13:22:13,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:13,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:13,964 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:13,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 13:22:13,965 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -662587281, now seen corresponding path program 4 times [2022-01-19 13:22:13,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625085561] [2022-01-19 13:22:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:13,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:22:14,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:14,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625085561] [2022-01-19 13:22:14,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625085561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:14,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:14,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:22:14,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986991405] [2022-01-19 13:22:14,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:14,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:22:14,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:22:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:22:14,008 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:22:14,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 437 transitions, 2502 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:14,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:14,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:22:14,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:19,226 INFO L129 PetriNetUnfolder]: 3869/32920 cut-off events. [2022-01-19 13:22:19,226 INFO L130 PetriNetUnfolder]: For 72122/75925 co-relation queries the response was YES. [2022-01-19 13:22:19,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72030 conditions, 32920 events. 3869/32920 cut-off events. For 72122/75925 co-relation queries the response was YES. Maximal size of possible extension queue 1309. Compared 531104 event pairs, 1009 based on Foata normal form. 381/31243 useless extension candidates. Maximal degree in co-relation 71967. Up to 3447 conditions per place. [2022-01-19 13:22:19,491 INFO L132 encePairwiseOnDemand]: 324/332 looper letters, 53 selfloop transitions, 26 changer transitions 20/458 dead transitions. [2022-01-19 13:22:19,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 458 transitions, 2750 flow [2022-01-19 13:22:19,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:22:19,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:22:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1529 transitions. [2022-01-19 13:22:19,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9210843373493975 [2022-01-19 13:22:19,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1529 transitions. [2022-01-19 13:22:19,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1529 transitions. [2022-01-19 13:22:19,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:19,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1529 transitions. [2022-01-19 13:22:19,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.8) internal successors, (1529), 5 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:19,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:19,496 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:19,496 INFO L186 Difference]: Start difference. First operand has 425 places, 437 transitions, 2502 flow. Second operand 5 states and 1529 transitions. [2022-01-19 13:22:19,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 458 transitions, 2750 flow [2022-01-19 13:22:19,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 458 transitions, 2734 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 13:22:19,971 INFO L242 Difference]: Finished difference. Result has 427 places, 425 transitions, 2419 flow [2022-01-19 13:22:19,972 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2419, PETRI_PLACES=427, PETRI_TRANSITIONS=425} [2022-01-19 13:22:19,972 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 133 predicate places. [2022-01-19 13:22:19,972 INFO L470 AbstractCegarLoop]: Abstraction has has 427 places, 425 transitions, 2419 flow [2022-01-19 13:22:19,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:19,972 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:19,972 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:19,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 13:22:19,973 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:19,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1029623181, now seen corresponding path program 5 times [2022-01-19 13:22:19,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:19,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466002511] [2022-01-19 13:22:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:19,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:22:20,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466002511] [2022-01-19 13:22:20,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466002511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:20,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:20,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:22:20,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047263205] [2022-01-19 13:22:20,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:20,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:22:20,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:22:20,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:22:20,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:22:20,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 425 transitions, 2419 flow. Second operand has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:20,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:20,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:22:20,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:25,276 INFO L129 PetriNetUnfolder]: 3799/32774 cut-off events. [2022-01-19 13:22:25,276 INFO L130 PetriNetUnfolder]: For 64075/67427 co-relation queries the response was YES. [2022-01-19 13:22:25,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69953 conditions, 32774 events. 3799/32774 cut-off events. For 64075/67427 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 520654 event pairs, 1385 based on Foata normal form. 187/30810 useless extension candidates. Maximal degree in co-relation 69890. Up to 3139 conditions per place. [2022-01-19 13:22:25,533 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 55 selfloop transitions, 13 changer transitions 3/430 dead transitions. [2022-01-19 13:22:25,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 430 transitions, 2556 flow [2022-01-19 13:22:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:22:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:22:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1209 transitions. [2022-01-19 13:22:25,534 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9103915662650602 [2022-01-19 13:22:25,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1209 transitions. [2022-01-19 13:22:25,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1209 transitions. [2022-01-19 13:22:25,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:25,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1209 transitions. [2022-01-19 13:22:25,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 302.25) internal successors, (1209), 4 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:25,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:25,536 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:25,536 INFO L186 Difference]: Start difference. First operand has 427 places, 425 transitions, 2419 flow. Second operand 4 states and 1209 transitions. [2022-01-19 13:22:25,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 430 transitions, 2556 flow [2022-01-19 13:22:25,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 430 transitions, 2482 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-01-19 13:22:25,995 INFO L242 Difference]: Finished difference. Result has 414 places, 423 transitions, 2334 flow [2022-01-19 13:22:25,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2325, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2334, PETRI_PLACES=414, PETRI_TRANSITIONS=423} [2022-01-19 13:22:25,996 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 120 predicate places. [2022-01-19 13:22:25,996 INFO L470 AbstractCegarLoop]: Abstraction has has 414 places, 423 transitions, 2334 flow [2022-01-19 13:22:25,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 298.0) internal successors, (1192), 4 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:25,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:25,997 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:25,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 13:22:25,997 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:25,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1629439128, now seen corresponding path program 1 times [2022-01-19 13:22:25,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:25,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825002083] [2022-01-19 13:22:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:25,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:22:26,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:26,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825002083] [2022-01-19 13:22:26,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825002083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:26,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:26,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:22:26,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526912453] [2022-01-19 13:22:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:26,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:22:26,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:22:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:22:26,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:22:26,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 423 transitions, 2334 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:26,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:26,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:22:26,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:31,098 INFO L129 PetriNetUnfolder]: 4055/34597 cut-off events. [2022-01-19 13:22:31,098 INFO L130 PetriNetUnfolder]: For 70712/74210 co-relation queries the response was YES. [2022-01-19 13:22:31,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74607 conditions, 34597 events. 4055/34597 cut-off events. For 70712/74210 co-relation queries the response was YES. Maximal size of possible extension queue 1393. Compared 559406 event pairs, 1299 based on Foata normal form. 244/32473 useless extension candidates. Maximal degree in co-relation 74549. Up to 3133 conditions per place. [2022-01-19 13:22:31,369 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 82 selfloop transitions, 19 changer transitions 6/466 dead transitions. [2022-01-19 13:22:31,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 466 transitions, 3012 flow [2022-01-19 13:22:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:22:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:22:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1521 transitions. [2022-01-19 13:22:31,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9162650602409639 [2022-01-19 13:22:31,371 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1521 transitions. [2022-01-19 13:22:31,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1521 transitions. [2022-01-19 13:22:31,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:31,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1521 transitions. [2022-01-19 13:22:31,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:31,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:31,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:31,374 INFO L186 Difference]: Start difference. First operand has 414 places, 423 transitions, 2334 flow. Second operand 5 states and 1521 transitions. [2022-01-19 13:22:31,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 466 transitions, 3012 flow [2022-01-19 13:22:31,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 466 transitions, 2990 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 13:22:31,819 INFO L242 Difference]: Finished difference. Result has 419 places, 434 transitions, 2595 flow [2022-01-19 13:22:31,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2317, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2595, PETRI_PLACES=419, PETRI_TRANSITIONS=434} [2022-01-19 13:22:31,820 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 125 predicate places. [2022-01-19 13:22:31,820 INFO L470 AbstractCegarLoop]: Abstraction has has 419 places, 434 transitions, 2595 flow [2022-01-19 13:22:31,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:31,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:31,821 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:31,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 13:22:31,821 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:31,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:31,821 INFO L85 PathProgramCache]: Analyzing trace with hash -689714854, now seen corresponding path program 2 times [2022-01-19 13:22:31,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:31,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717126097] [2022-01-19 13:22:31,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:31,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:22:31,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:31,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717126097] [2022-01-19 13:22:31,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717126097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:31,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:31,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:22:31,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661801662] [2022-01-19 13:22:31,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:31,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:22:31,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:31,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:22:31,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:22:31,884 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:22:31,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 434 transitions, 2595 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:31,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:31,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:22:31,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:37,327 INFO L129 PetriNetUnfolder]: 4372/37256 cut-off events. [2022-01-19 13:22:37,327 INFO L130 PetriNetUnfolder]: For 73806/77063 co-relation queries the response was YES. [2022-01-19 13:22:37,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80507 conditions, 37256 events. 4372/37256 cut-off events. For 73806/77063 co-relation queries the response was YES. Maximal size of possible extension queue 1574. Compared 619349 event pairs, 1340 based on Foata normal form. 244/34946 useless extension candidates. Maximal degree in co-relation 80446. Up to 3303 conditions per place. [2022-01-19 13:22:37,858 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 59 selfloop transitions, 33 changer transitions 5/456 dead transitions. [2022-01-19 13:22:37,858 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 456 transitions, 2906 flow [2022-01-19 13:22:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:22:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:22:37,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1526 transitions. [2022-01-19 13:22:37,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9192771084337349 [2022-01-19 13:22:37,860 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1526 transitions. [2022-01-19 13:22:37,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1526 transitions. [2022-01-19 13:22:37,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:37,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1526 transitions. [2022-01-19 13:22:37,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 305.2) internal successors, (1526), 5 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:37,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:37,862 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:37,862 INFO L186 Difference]: Start difference. First operand has 419 places, 434 transitions, 2595 flow. Second operand 5 states and 1526 transitions. [2022-01-19 13:22:37,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 456 transitions, 2906 flow [2022-01-19 13:22:38,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 456 transitions, 2903 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:22:38,388 INFO L242 Difference]: Finished difference. Result has 424 places, 434 transitions, 2685 flow [2022-01-19 13:22:38,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2594, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2685, PETRI_PLACES=424, PETRI_TRANSITIONS=434} [2022-01-19 13:22:38,389 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 130 predicate places. [2022-01-19 13:22:38,389 INFO L470 AbstractCegarLoop]: Abstraction has has 424 places, 434 transitions, 2685 flow [2022-01-19 13:22:38,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:38,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:38,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:38,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 13:22:38,389 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:38,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:38,390 INFO L85 PathProgramCache]: Analyzing trace with hash -172368648, now seen corresponding path program 1 times [2022-01-19 13:22:38,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:38,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110101388] [2022-01-19 13:22:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:38,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:22:38,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:38,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110101388] [2022-01-19 13:22:38,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110101388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:22:38,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671799205] [2022-01-19 13:22:38,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:38,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:22:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:22:38,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:22:38,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 13:22:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:38,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 13:22:38,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:22:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:22:39,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:22:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:22:40,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671799205] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:22:40,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:22:40,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 13:22:40,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691068267] [2022-01-19 13:22:40,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:40,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:22:40,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:22:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 13:22:40,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 332 [2022-01-19 13:22:40,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 434 transitions, 2685 flow. Second operand has 11 states, 11 states have (on average 260.45454545454544) internal successors, (2865), 11 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:40,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:40,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 332 [2022-01-19 13:22:40,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:48,129 INFO L129 PetriNetUnfolder]: 10137/50368 cut-off events. [2022-01-19 13:22:48,129 INFO L130 PetriNetUnfolder]: For 110312/115310 co-relation queries the response was YES. [2022-01-19 13:22:48,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109516 conditions, 50368 events. 10137/50368 cut-off events. For 110312/115310 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 801735 event pairs, 3026 based on Foata normal form. 310/44542 useless extension candidates. Maximal degree in co-relation 109453. Up to 5409 conditions per place. [2022-01-19 13:22:48,679 INFO L132 encePairwiseOnDemand]: 314/332 looper letters, 220 selfloop transitions, 28 changer transitions 13/573 dead transitions. [2022-01-19 13:22:48,679 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 573 transitions, 4109 flow [2022-01-19 13:22:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 13:22:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 13:22:48,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5048 transitions. [2022-01-19 13:22:48,682 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8002536461636017 [2022-01-19 13:22:48,682 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5048 transitions. [2022-01-19 13:22:48,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5048 transitions. [2022-01-19 13:22:48,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:48,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5048 transitions. [2022-01-19 13:22:48,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 265.6842105263158) internal successors, (5048), 19 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:48,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:48,692 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 332.0) internal successors, (6640), 20 states have internal predecessors, (6640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:48,692 INFO L186 Difference]: Start difference. First operand has 424 places, 434 transitions, 2685 flow. Second operand 19 states and 5048 transitions. [2022-01-19 13:22:48,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 573 transitions, 4109 flow [2022-01-19 13:22:49,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 573 transitions, 4074 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:22:49,283 INFO L242 Difference]: Finished difference. Result has 443 places, 437 transitions, 2695 flow [2022-01-19 13:22:49,284 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2695, PETRI_PLACES=443, PETRI_TRANSITIONS=437} [2022-01-19 13:22:49,284 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 149 predicate places. [2022-01-19 13:22:49,284 INFO L470 AbstractCegarLoop]: Abstraction has has 443 places, 437 transitions, 2695 flow [2022-01-19 13:22:49,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.45454545454544) internal successors, (2865), 11 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:49,285 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:49,285 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:49,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 13:22:49,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-19 13:22:49,508 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:49,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash 362017285, now seen corresponding path program 1 times [2022-01-19 13:22:49,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:49,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562391458] [2022-01-19 13:22:49,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:49,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:49,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:22:49,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:49,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562391458] [2022-01-19 13:22:49,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562391458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:49,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:49,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:22:49,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704314122] [2022-01-19 13:22:49,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:49,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:22:49,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:49,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:22:49,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:22:49,584 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:22:49,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 437 transitions, 2695 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:49,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:49,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:22:49,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:55,456 INFO L129 PetriNetUnfolder]: 4228/36950 cut-off events. [2022-01-19 13:22:55,456 INFO L130 PetriNetUnfolder]: For 78765/81868 co-relation queries the response was YES. [2022-01-19 13:22:55,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80612 conditions, 36950 events. 4228/36950 cut-off events. For 78765/81868 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 614468 event pairs, 1247 based on Foata normal form. 226/34776 useless extension candidates. Maximal degree in co-relation 80546. Up to 3236 conditions per place. [2022-01-19 13:22:56,030 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 71 selfloop transitions, 26 changer transitions 0/459 dead transitions. [2022-01-19 13:22:56,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 459 transitions, 3060 flow [2022-01-19 13:22:56,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:22:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:22:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1524 transitions. [2022-01-19 13:22:56,032 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9180722891566265 [2022-01-19 13:22:56,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1524 transitions. [2022-01-19 13:22:56,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1524 transitions. [2022-01-19 13:22:56,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:56,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1524 transitions. [2022-01-19 13:22:56,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.8) internal successors, (1524), 5 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:56,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:56,034 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:56,034 INFO L186 Difference]: Start difference. First operand has 443 places, 437 transitions, 2695 flow. Second operand 5 states and 1524 transitions. [2022-01-19 13:22:56,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 459 transitions, 3060 flow [2022-01-19 13:22:56,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 459 transitions, 3024 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-01-19 13:22:56,569 INFO L242 Difference]: Finished difference. Result has 440 places, 440 transitions, 2810 flow [2022-01-19 13:22:56,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2810, PETRI_PLACES=440, PETRI_TRANSITIONS=440} [2022-01-19 13:22:56,570 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 146 predicate places. [2022-01-19 13:22:56,570 INFO L470 AbstractCegarLoop]: Abstraction has has 440 places, 440 transitions, 2810 flow [2022-01-19 13:22:56,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:56,570 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:56,571 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:56,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 13:22:56,571 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:22:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:56,571 INFO L85 PathProgramCache]: Analyzing trace with hash -639401874, now seen corresponding path program 1 times [2022-01-19 13:22:56,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:56,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989089204] [2022-01-19 13:22:56,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:56,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:22:56,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:56,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989089204] [2022-01-19 13:22:56,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989089204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:56,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:22:56,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200839329] [2022-01-19 13:22:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:56,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:22:56,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:22:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:22:56,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 332 [2022-01-19 13:22:56,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 440 transitions, 2810 flow. Second operand has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:56,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:56,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 332 [2022-01-19 13:22:56,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:01,865 INFO L129 PetriNetUnfolder]: 5359/31479 cut-off events. [2022-01-19 13:23:01,865 INFO L130 PetriNetUnfolder]: For 80055/87775 co-relation queries the response was YES. [2022-01-19 13:23:02,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70650 conditions, 31479 events. 5359/31479 cut-off events. For 80055/87775 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 484755 event pairs, 2798 based on Foata normal form. 362/28887 useless extension candidates. Maximal degree in co-relation 70581. Up to 6685 conditions per place. [2022-01-19 13:23:02,112 INFO L132 encePairwiseOnDemand]: 321/332 looper letters, 83 selfloop transitions, 14 changer transitions 77/485 dead transitions. [2022-01-19 13:23:02,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 485 transitions, 3432 flow [2022-01-19 13:23:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:23:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:23:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2704 transitions. [2022-01-19 13:23:02,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8144578313253013 [2022-01-19 13:23:02,114 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2704 transitions. [2022-01-19 13:23:02,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2704 transitions. [2022-01-19 13:23:02,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:02,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2704 transitions. [2022-01-19 13:23:02,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 270.4) internal successors, (2704), 10 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:02,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:02,119 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:02,119 INFO L186 Difference]: Start difference. First operand has 440 places, 440 transitions, 2810 flow. Second operand 10 states and 2704 transitions. [2022-01-19 13:23:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 485 transitions, 3432 flow [2022-01-19 13:23:02,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 485 transitions, 3383 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-01-19 13:23:02,457 INFO L242 Difference]: Finished difference. Result has 449 places, 405 transitions, 2452 flow [2022-01-19 13:23:02,457 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2452, PETRI_PLACES=449, PETRI_TRANSITIONS=405} [2022-01-19 13:23:02,458 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 155 predicate places. [2022-01-19 13:23:02,458 INFO L470 AbstractCegarLoop]: Abstraction has has 449 places, 405 transitions, 2452 flow [2022-01-19 13:23:02,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:02,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:02,458 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:02,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 13:23:02,459 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:23:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:02,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2063265941, now seen corresponding path program 1 times [2022-01-19 13:23:02,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:02,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287072489] [2022-01-19 13:23:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:02,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:02,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:23:02,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:02,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287072489] [2022-01-19 13:23:02,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287072489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:02,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:02,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:23:02,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913480682] [2022-01-19 13:23:02,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:02,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:23:02,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:02,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:23:02,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:23:02,529 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 332 [2022-01-19 13:23:02,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 405 transitions, 2452 flow. Second operand has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:02,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:02,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 332 [2022-01-19 13:23:02,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:04,111 INFO L129 PetriNetUnfolder]: 1080/9714 cut-off events. [2022-01-19 13:23:04,112 INFO L130 PetriNetUnfolder]: For 18948/21265 co-relation queries the response was YES. [2022-01-19 13:23:04,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20831 conditions, 9714 events. 1080/9714 cut-off events. For 18948/21265 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 126813 event pairs, 563 based on Foata normal form. 145/9151 useless extension candidates. Maximal degree in co-relation 20761. Up to 1706 conditions per place. [2022-01-19 13:23:04,201 INFO L132 encePairwiseOnDemand]: 321/332 looper letters, 63 selfloop transitions, 8 changer transitions 48/428 dead transitions. [2022-01-19 13:23:04,202 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 428 transitions, 2731 flow [2022-01-19 13:23:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:23:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:23:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2714 transitions. [2022-01-19 13:23:04,204 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8174698795180723 [2022-01-19 13:23:04,204 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2714 transitions. [2022-01-19 13:23:04,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2714 transitions. [2022-01-19 13:23:04,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:04,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2714 transitions. [2022-01-19 13:23:04,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 271.4) internal successors, (2714), 10 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:04,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:04,210 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:04,210 INFO L186 Difference]: Start difference. First operand has 449 places, 405 transitions, 2452 flow. Second operand 10 states and 2714 transitions. [2022-01-19 13:23:04,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 428 transitions, 2731 flow [2022-01-19 13:23:04,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 428 transitions, 2628 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-01-19 13:23:04,281 INFO L242 Difference]: Finished difference. Result has 421 places, 378 transitions, 2187 flow [2022-01-19 13:23:04,282 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2187, PETRI_PLACES=421, PETRI_TRANSITIONS=378} [2022-01-19 13:23:04,282 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 127 predicate places. [2022-01-19 13:23:04,282 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 378 transitions, 2187 flow [2022-01-19 13:23:04,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.2857142857143) internal successors, (1871), 7 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:04,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:04,283 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:04,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 13:23:04,283 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:23:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:04,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1944799903, now seen corresponding path program 1 times [2022-01-19 13:23:04,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:04,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668394293] [2022-01-19 13:23:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:04,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:23:04,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668394293] [2022-01-19 13:23:04,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668394293] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:23:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702368509] [2022-01-19 13:23:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:04,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:23:04,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:23:04,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:23:04,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 13:23:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:04,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 13:23:04,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:23:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:23:05,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:23:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:23:05,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702368509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:23:05,891 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:23:05,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2022-01-19 13:23:05,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004611760] [2022-01-19 13:23:05,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:23:05,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 13:23:05,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 13:23:05,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=998, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 13:23:05,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 332 [2022-01-19 13:23:05,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 378 transitions, 2187 flow. Second operand has 34 states, 34 states have (on average 226.02941176470588) internal successors, (7685), 34 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:05,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:05,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 332 [2022-01-19 13:23:05,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:20,806 INFO L129 PetriNetUnfolder]: 16478/81389 cut-off events. [2022-01-19 13:23:20,807 INFO L130 PetriNetUnfolder]: For 128323/137376 co-relation queries the response was YES. [2022-01-19 13:23:21,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173752 conditions, 81389 events. 16478/81389 cut-off events. For 128323/137376 co-relation queries the response was YES. Maximal size of possible extension queue 3301. Compared 1377765 event pairs, 6660 based on Foata normal form. 3585/76953 useless extension candidates. Maximal degree in co-relation 173694. Up to 8833 conditions per place. [2022-01-19 13:23:21,911 INFO L132 encePairwiseOnDemand]: 294/332 looper letters, 384 selfloop transitions, 104 changer transitions 54/803 dead transitions. [2022-01-19 13:23:21,912 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 803 transitions, 5949 flow [2022-01-19 13:23:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-19 13:23:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-01-19 13:23:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 15778 transitions. [2022-01-19 13:23:21,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6789156626506024 [2022-01-19 13:23:21,923 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 15778 transitions. [2022-01-19 13:23:21,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 15778 transitions. [2022-01-19 13:23:21,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:21,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 15778 transitions. [2022-01-19 13:23:21,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 225.4) internal successors, (15778), 70 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:21,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 332.0) internal successors, (23572), 71 states have internal predecessors, (23572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:21,953 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 332.0) internal successors, (23572), 71 states have internal predecessors, (23572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:21,953 INFO L186 Difference]: Start difference. First operand has 421 places, 378 transitions, 2187 flow. Second operand 70 states and 15778 transitions. [2022-01-19 13:23:21,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 803 transitions, 5949 flow [2022-01-19 13:23:23,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 803 transitions, 5828 flow, removed 21 selfloop flow, removed 19 redundant places. [2022-01-19 13:23:23,306 INFO L242 Difference]: Finished difference. Result has 485 places, 464 transitions, 3168 flow [2022-01-19 13:23:23,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=3168, PETRI_PLACES=485, PETRI_TRANSITIONS=464} [2022-01-19 13:23:23,306 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 191 predicate places. [2022-01-19 13:23:23,307 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 464 transitions, 3168 flow [2022-01-19 13:23:23,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 226.02941176470588) internal successors, (7685), 34 states have internal predecessors, (7685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:23,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:23,307 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:23,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 13:23:23,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:23:23,508 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:23:23,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2095618797, now seen corresponding path program 1 times [2022-01-19 13:23:23,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:23,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370807373] [2022-01-19 13:23:23,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:23,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:23:23,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:23,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370807373] [2022-01-19 13:23:23,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370807373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:23,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:23,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:23:23,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648097206] [2022-01-19 13:23:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:23,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:23:23,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:23:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:23:23,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 332 [2022-01-19 13:23:23,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 464 transitions, 3168 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:23,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:23,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 332 [2022-01-19 13:23:23,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:30,821 INFO L129 PetriNetUnfolder]: 3737/38159 cut-off events. [2022-01-19 13:23:30,822 INFO L130 PetriNetUnfolder]: For 122251/130883 co-relation queries the response was YES. [2022-01-19 13:23:31,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93381 conditions, 38159 events. 3737/38159 cut-off events. For 122251/130883 co-relation queries the response was YES. Maximal size of possible extension queue 1749. Compared 657788 event pairs, 1179 based on Foata normal form. 830/36588 useless extension candidates. Maximal degree in co-relation 93301. Up to 6524 conditions per place. [2022-01-19 13:23:31,251 INFO L132 encePairwiseOnDemand]: 325/332 looper letters, 94 selfloop transitions, 39 changer transitions 4/514 dead transitions. [2022-01-19 13:23:31,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 514 transitions, 3986 flow [2022-01-19 13:23:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:23:31,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:23:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1946 transitions. [2022-01-19 13:23:31,253 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373493975903614 [2022-01-19 13:23:31,253 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1946 transitions. [2022-01-19 13:23:31,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1946 transitions. [2022-01-19 13:23:31,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:31,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1946 transitions. [2022-01-19 13:23:31,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.0) internal successors, (1946), 7 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:31,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:31,256 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:31,256 INFO L186 Difference]: Start difference. First operand has 485 places, 464 transitions, 3168 flow. Second operand 7 states and 1946 transitions. [2022-01-19 13:23:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 514 transitions, 3986 flow [2022-01-19 13:23:31,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 514 transitions, 3711 flow, removed 95 selfloop flow, removed 25 redundant places. [2022-01-19 13:23:31,853 INFO L242 Difference]: Finished difference. Result has 461 places, 502 transitions, 3603 flow [2022-01-19 13:23:31,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2970, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3603, PETRI_PLACES=461, PETRI_TRANSITIONS=502} [2022-01-19 13:23:31,854 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 167 predicate places. [2022-01-19 13:23:31,854 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 502 transitions, 3603 flow [2022-01-19 13:23:31,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:31,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:31,854 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:31,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 13:23:31,855 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:23:31,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1050068299, now seen corresponding path program 1 times [2022-01-19 13:23:31,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:31,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310095814] [2022-01-19 13:23:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:31,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:23:32,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:32,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310095814] [2022-01-19 13:23:32,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310095814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:23:32,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628695938] [2022-01-19 13:23:32,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:32,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:23:32,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:23:32,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:23:32,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 13:23:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:32,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 13:23:32,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:23:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:23:32,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:23:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:23:33,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628695938] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:23:33,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:23:33,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 13] total 26 [2022-01-19 13:23:33,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867801684] [2022-01-19 13:23:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:33,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:23:33,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:23:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:23:33,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 332 [2022-01-19 13:23:33,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 502 transitions, 3603 flow. Second operand has 13 states, 13 states have (on average 236.3846153846154) internal successors, (3073), 13 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:33,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:33,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 332 [2022-01-19 13:23:33,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:48,971 INFO L129 PetriNetUnfolder]: 16181/86964 cut-off events. [2022-01-19 13:23:48,971 INFO L130 PetriNetUnfolder]: For 239092/251172 co-relation queries the response was YES. [2022-01-19 13:23:50,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200707 conditions, 86964 events. 16181/86964 cut-off events. For 239092/251172 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 1522879 event pairs, 8790 based on Foata normal form. 2471/79569 useless extension candidates. Maximal degree in co-relation 200635. Up to 15656 conditions per place. [2022-01-19 13:23:50,708 INFO L132 encePairwiseOnDemand]: 315/332 looper letters, 184 selfloop transitions, 38 changer transitions 13/548 dead transitions. [2022-01-19 13:23:50,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 548 transitions, 4414 flow [2022-01-19 13:23:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 13:23:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 13:23:50,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3351 transitions. [2022-01-19 13:23:50,710 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7209552495697074 [2022-01-19 13:23:50,710 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3351 transitions. [2022-01-19 13:23:50,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3351 transitions. [2022-01-19 13:23:50,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:50,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3351 transitions. [2022-01-19 13:23:50,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 239.35714285714286) internal successors, (3351), 14 states have internal predecessors, (3351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:50,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:50,716 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:50,716 INFO L186 Difference]: Start difference. First operand has 461 places, 502 transitions, 3603 flow. Second operand 14 states and 3351 transitions. [2022-01-19 13:23:50,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 548 transitions, 4414 flow [2022-01-19 13:23:53,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 548 transitions, 4381 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-01-19 13:23:53,382 INFO L242 Difference]: Finished difference. Result has 473 places, 497 transitions, 3618 flow [2022-01-19 13:23:53,382 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3618, PETRI_PLACES=473, PETRI_TRANSITIONS=497} [2022-01-19 13:23:53,382 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 179 predicate places. [2022-01-19 13:23:53,382 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 497 transitions, 3618 flow [2022-01-19 13:23:53,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 236.3846153846154) internal successors, (3073), 13 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:53,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:53,383 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:53,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 13:23:53,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-19 13:23:53,595 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:23:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:53,596 INFO L85 PathProgramCache]: Analyzing trace with hash 532025413, now seen corresponding path program 1 times [2022-01-19 13:23:53,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:53,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725172788] [2022-01-19 13:23:53,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:53,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:23:53,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:53,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725172788] [2022-01-19 13:23:53,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725172788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:53,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:53,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:23:53,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183274932] [2022-01-19 13:23:53,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:53,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:23:53,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:53,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:23:53,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:23:53,649 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:23:53,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 497 transitions, 3618 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:53,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:53,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:23:53,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:03,656 INFO L129 PetriNetUnfolder]: 7025/55588 cut-off events. [2022-01-19 13:24:03,656 INFO L130 PetriNetUnfolder]: For 173982/183536 co-relation queries the response was YES. [2022-01-19 13:24:04,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133512 conditions, 55588 events. 7025/55588 cut-off events. For 173982/183536 co-relation queries the response was YES. Maximal size of possible extension queue 2434. Compared 962526 event pairs, 1983 based on Foata normal form. 543/52180 useless extension candidates. Maximal degree in co-relation 133438. Up to 5848 conditions per place. [2022-01-19 13:24:04,734 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 49 selfloop transitions, 15 changer transitions 42/515 dead transitions. [2022-01-19 13:24:04,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 515 transitions, 3909 flow [2022-01-19 13:24:04,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:04,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:04,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1521 transitions. [2022-01-19 13:24:04,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9162650602409639 [2022-01-19 13:24:04,736 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1521 transitions. [2022-01-19 13:24:04,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1521 transitions. [2022-01-19 13:24:04,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:04,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1521 transitions. [2022-01-19 13:24:04,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:04,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:04,739 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:04,739 INFO L186 Difference]: Start difference. First operand has 473 places, 497 transitions, 3618 flow. Second operand 5 states and 1521 transitions. [2022-01-19 13:24:04,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 515 transitions, 3909 flow [2022-01-19 13:24:06,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 515 transitions, 3866 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-01-19 13:24:06,433 INFO L242 Difference]: Finished difference. Result has 467 places, 461 transitions, 3070 flow [2022-01-19 13:24:06,433 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3555, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3070, PETRI_PLACES=467, PETRI_TRANSITIONS=461} [2022-01-19 13:24:06,433 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 173 predicate places. [2022-01-19 13:24:06,433 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 461 transitions, 3070 flow [2022-01-19 13:24:06,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:06,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:06,434 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:06,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 13:24:06,434 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:06,434 INFO L85 PathProgramCache]: Analyzing trace with hash -173715173, now seen corresponding path program 2 times [2022-01-19 13:24:06,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:06,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667723171] [2022-01-19 13:24:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:06,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:06,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:06,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667723171] [2022-01-19 13:24:06,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667723171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:06,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:06,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:06,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074474313] [2022-01-19 13:24:06,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:06,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:06,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:06,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:06,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:06,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 461 transitions, 3070 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:06,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:06,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:06,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:11,718 INFO L129 PetriNetUnfolder]: 3732/30057 cut-off events. [2022-01-19 13:24:11,719 INFO L130 PetriNetUnfolder]: For 103726/109056 co-relation queries the response was YES. [2022-01-19 13:24:12,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72984 conditions, 30057 events. 3732/30057 cut-off events. For 103726/109056 co-relation queries the response was YES. Maximal size of possible extension queue 1562. Compared 483411 event pairs, 1013 based on Foata normal form. 327/28531 useless extension candidates. Maximal degree in co-relation 72911. Up to 3184 conditions per place. [2022-01-19 13:24:12,049 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 47 selfloop transitions, 19 changer transitions 4/477 dead transitions. [2022-01-19 13:24:12,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 477 transitions, 3268 flow [2022-01-19 13:24:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:12,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1517 transitions. [2022-01-19 13:24:12,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9138554216867469 [2022-01-19 13:24:12,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1517 transitions. [2022-01-19 13:24:12,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1517 transitions. [2022-01-19 13:24:12,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:12,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1517 transitions. [2022-01-19 13:24:12,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.4) internal successors, (1517), 5 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:12,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:12,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:12,053 INFO L186 Difference]: Start difference. First operand has 467 places, 461 transitions, 3070 flow. Second operand 5 states and 1517 transitions. [2022-01-19 13:24:12,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 477 transitions, 3268 flow [2022-01-19 13:24:12,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 477 transitions, 3111 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-01-19 13:24:12,561 INFO L242 Difference]: Finished difference. Result has 446 places, 460 transitions, 2976 flow [2022-01-19 13:24:12,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2976, PETRI_PLACES=446, PETRI_TRANSITIONS=460} [2022-01-19 13:24:12,562 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 152 predicate places. [2022-01-19 13:24:12,562 INFO L470 AbstractCegarLoop]: Abstraction has has 446 places, 460 transitions, 2976 flow [2022-01-19 13:24:12,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:12,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:12,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:12,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 13:24:12,562 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1373948169, now seen corresponding path program 3 times [2022-01-19 13:24:12,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153581352] [2022-01-19 13:24:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:12,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:12,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:12,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:12,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153581352] [2022-01-19 13:24:12,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153581352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:12,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:12,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:12,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429548128] [2022-01-19 13:24:12,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:12,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:12,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:12,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:12,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:12,618 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:12,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 460 transitions, 2976 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:12,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:12,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:12,619 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:18,674 INFO L129 PetriNetUnfolder]: 4138/36327 cut-off events. [2022-01-19 13:24:18,674 INFO L130 PetriNetUnfolder]: For 94598/100061 co-relation queries the response was YES. [2022-01-19 13:24:18,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82859 conditions, 36327 events. 4138/36327 cut-off events. For 94598/100061 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 597901 event pairs, 1138 based on Foata normal form. 242/34180 useless extension candidates. Maximal degree in co-relation 82796. Up to 3377 conditions per place. [2022-01-19 13:24:19,037 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 52 selfloop transitions, 17 changer transitions 2/478 dead transitions. [2022-01-19 13:24:19,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 478 transitions, 3226 flow [2022-01-19 13:24:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:19,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1514 transitions. [2022-01-19 13:24:19,038 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9120481927710843 [2022-01-19 13:24:19,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1514 transitions. [2022-01-19 13:24:19,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1514 transitions. [2022-01-19 13:24:19,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:19,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1514 transitions. [2022-01-19 13:24:19,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.8) internal successors, (1514), 5 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:19,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:19,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:19,040 INFO L186 Difference]: Start difference. First operand has 446 places, 460 transitions, 2976 flow. Second operand 5 states and 1514 transitions. [2022-01-19 13:24:19,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 478 transitions, 3226 flow [2022-01-19 13:24:19,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 478 transitions, 3226 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:24:19,583 INFO L242 Difference]: Finished difference. Result has 453 places, 464 transitions, 3094 flow [2022-01-19 13:24:19,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2976, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3094, PETRI_PLACES=453, PETRI_TRANSITIONS=464} [2022-01-19 13:24:19,584 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 159 predicate places. [2022-01-19 13:24:19,584 INFO L470 AbstractCegarLoop]: Abstraction has has 453 places, 464 transitions, 3094 flow [2022-01-19 13:24:19,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:19,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:19,585 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:19,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 13:24:19,585 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:19,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1640491779, now seen corresponding path program 4 times [2022-01-19 13:24:19,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:19,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754711541] [2022-01-19 13:24:19,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:19,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:19,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:19,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754711541] [2022-01-19 13:24:19,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754711541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:19,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:19,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:19,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801069699] [2022-01-19 13:24:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:19,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:19,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:19,646 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:19,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 464 transitions, 3094 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:19,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:19,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:19,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:25,404 INFO L129 PetriNetUnfolder]: 4048/35331 cut-off events. [2022-01-19 13:24:25,404 INFO L130 PetriNetUnfolder]: For 103618/109046 co-relation queries the response was YES. [2022-01-19 13:24:25,771 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81592 conditions, 35331 events. 4048/35331 cut-off events. For 103618/109046 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 578646 event pairs, 1138 based on Foata normal form. 332/33274 useless extension candidates. Maximal degree in co-relation 81525. Up to 3377 conditions per place. [2022-01-19 13:24:26,058 INFO L132 encePairwiseOnDemand]: 326/332 looper letters, 49 selfloop transitions, 17 changer transitions 3/476 dead transitions. [2022-01-19 13:24:26,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 476 transitions, 3270 flow [2022-01-19 13:24:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1514 transitions. [2022-01-19 13:24:26,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9120481927710843 [2022-01-19 13:24:26,061 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1514 transitions. [2022-01-19 13:24:26,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1514 transitions. [2022-01-19 13:24:26,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:26,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1514 transitions. [2022-01-19 13:24:26,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.8) internal successors, (1514), 5 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:26,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:26,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:26,077 INFO L186 Difference]: Start difference. First operand has 453 places, 464 transitions, 3094 flow. Second operand 5 states and 1514 transitions. [2022-01-19 13:24:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 476 transitions, 3270 flow [2022-01-19 13:24:26,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 476 transitions, 3259 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:24:26,659 INFO L242 Difference]: Finished difference. Result has 457 places, 464 transitions, 3131 flow [2022-01-19 13:24:26,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3131, PETRI_PLACES=457, PETRI_TRANSITIONS=464} [2022-01-19 13:24:26,661 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 163 predicate places. [2022-01-19 13:24:26,662 INFO L470 AbstractCegarLoop]: Abstraction has has 457 places, 464 transitions, 3131 flow [2022-01-19 13:24:26,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:26,662 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:26,662 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:26,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 13:24:26,662 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:26,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:26,663 INFO L85 PathProgramCache]: Analyzing trace with hash -382432549, now seen corresponding path program 5 times [2022-01-19 13:24:26,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:26,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675742547] [2022-01-19 13:24:26,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:26,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:26,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:26,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:26,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675742547] [2022-01-19 13:24:26,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675742547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:26,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:26,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:26,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550049014] [2022-01-19 13:24:26,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:26,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:26,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:26,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:26,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:26,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:26,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 464 transitions, 3131 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:26,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:26,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:26,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:32,804 INFO L129 PetriNetUnfolder]: 4251/37857 cut-off events. [2022-01-19 13:24:32,804 INFO L130 PetriNetUnfolder]: For 108272/114015 co-relation queries the response was YES. [2022-01-19 13:24:33,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86727 conditions, 37857 events. 4251/37857 cut-off events. For 108272/114015 co-relation queries the response was YES. Maximal size of possible extension queue 1693. Compared 628848 event pairs, 1088 based on Foata normal form. 316/35595 useless extension candidates. Maximal degree in co-relation 86659. Up to 3838 conditions per place. [2022-01-19 13:24:33,472 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 51 selfloop transitions, 18 changer transitions 1/477 dead transitions. [2022-01-19 13:24:33,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 477 transitions, 3307 flow [2022-01-19 13:24:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1511 transitions. [2022-01-19 13:24:33,474 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9102409638554216 [2022-01-19 13:24:33,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1511 transitions. [2022-01-19 13:24:33,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1511 transitions. [2022-01-19 13:24:33,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:33,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1511 transitions. [2022-01-19 13:24:33,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 302.2) internal successors, (1511), 5 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:33,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:33,476 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:33,476 INFO L186 Difference]: Start difference. First operand has 457 places, 464 transitions, 3131 flow. Second operand 5 states and 1511 transitions. [2022-01-19 13:24:33,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 477 transitions, 3307 flow [2022-01-19 13:24:34,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 477 transitions, 3291 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 13:24:34,054 INFO L242 Difference]: Finished difference. Result has 461 places, 464 transitions, 3169 flow [2022-01-19 13:24:34,055 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3169, PETRI_PLACES=461, PETRI_TRANSITIONS=464} [2022-01-19 13:24:34,055 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 167 predicate places. [2022-01-19 13:24:34,055 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 464 transitions, 3169 flow [2022-01-19 13:24:34,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:34,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:34,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:34,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 13:24:34,056 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 436964739, now seen corresponding path program 6 times [2022-01-19 13:24:34,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:34,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452831040] [2022-01-19 13:24:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:34,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:34,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:34,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452831040] [2022-01-19 13:24:34,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452831040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:34,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:34,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:34,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376647502] [2022-01-19 13:24:34,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:34,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:34,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:34,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:34,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 464 transitions, 3169 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:34,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:34,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:34,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:40,659 INFO L129 PetriNetUnfolder]: 4340/39043 cut-off events. [2022-01-19 13:24:40,659 INFO L130 PetriNetUnfolder]: For 113377/119074 co-relation queries the response was YES. [2022-01-19 13:24:41,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88863 conditions, 39043 events. 4340/39043 cut-off events. For 113377/119074 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 651881 event pairs, 1122 based on Foata normal form. 246/36653 useless extension candidates. Maximal degree in co-relation 88793. Up to 3958 conditions per place. [2022-01-19 13:24:41,131 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 50 selfloop transitions, 15 changer transitions 2/474 dead transitions. [2022-01-19 13:24:41,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 474 transitions, 3305 flow [2022-01-19 13:24:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1508 transitions. [2022-01-19 13:24:41,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.908433734939759 [2022-01-19 13:24:41,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1508 transitions. [2022-01-19 13:24:41,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1508 transitions. [2022-01-19 13:24:41,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:41,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1508 transitions. [2022-01-19 13:24:41,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.6) internal successors, (1508), 5 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:41,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:41,135 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:41,135 INFO L186 Difference]: Start difference. First operand has 461 places, 464 transitions, 3169 flow. Second operand 5 states and 1508 transitions. [2022-01-19 13:24:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 474 transitions, 3305 flow [2022-01-19 13:24:41,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 474 transitions, 3290 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 13:24:41,782 INFO L242 Difference]: Finished difference. Result has 462 places, 463 transitions, 3158 flow [2022-01-19 13:24:41,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3158, PETRI_PLACES=462, PETRI_TRANSITIONS=463} [2022-01-19 13:24:41,782 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 168 predicate places. [2022-01-19 13:24:41,782 INFO L470 AbstractCegarLoop]: Abstraction has has 462 places, 463 transitions, 3158 flow [2022-01-19 13:24:41,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:41,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:41,783 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:41,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 13:24:41,783 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2009014015, now seen corresponding path program 7 times [2022-01-19 13:24:41,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498007712] [2022-01-19 13:24:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:41,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:41,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:41,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498007712] [2022-01-19 13:24:41,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498007712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:41,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:41,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:41,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852518765] [2022-01-19 13:24:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:41,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:41,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:41,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:41,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 463 transitions, 3158 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:41,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:41,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:41,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:48,375 INFO L129 PetriNetUnfolder]: 4335/39038 cut-off events. [2022-01-19 13:24:48,375 INFO L130 PetriNetUnfolder]: For 110677/116374 co-relation queries the response was YES. [2022-01-19 13:24:48,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89206 conditions, 39038 events. 4335/39038 cut-off events. For 110677/116374 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 652008 event pairs, 1088 based on Foata normal form. 226/36628 useless extension candidates. Maximal degree in co-relation 89138. Up to 3958 conditions per place. [2022-01-19 13:24:48,785 INFO L132 encePairwiseOnDemand]: 327/332 looper letters, 50 selfloop transitions, 14 changer transitions 1/472 dead transitions. [2022-01-19 13:24:48,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 472 transitions, 3290 flow [2022-01-19 13:24:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1507 transitions. [2022-01-19 13:24:48,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9078313253012048 [2022-01-19 13:24:48,786 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1507 transitions. [2022-01-19 13:24:48,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1507 transitions. [2022-01-19 13:24:48,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:48,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1507 transitions. [2022-01-19 13:24:48,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:48,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:48,789 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:48,789 INFO L186 Difference]: Start difference. First operand has 462 places, 463 transitions, 3158 flow. Second operand 5 states and 1507 transitions. [2022-01-19 13:24:48,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 472 transitions, 3290 flow [2022-01-19 13:24:49,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 472 transitions, 3272 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:24:49,454 INFO L242 Difference]: Finished difference. Result has 464 places, 462 transitions, 3145 flow [2022-01-19 13:24:49,455 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3145, PETRI_PLACES=464, PETRI_TRANSITIONS=462} [2022-01-19 13:24:49,455 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 170 predicate places. [2022-01-19 13:24:49,455 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 462 transitions, 3145 flow [2022-01-19 13:24:49,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:49,455 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:49,456 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:49,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 13:24:49,456 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:49,456 INFO L85 PathProgramCache]: Analyzing trace with hash -557047913, now seen corresponding path program 8 times [2022-01-19 13:24:49,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:49,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473164605] [2022-01-19 13:24:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:49,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:49,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:49,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473164605] [2022-01-19 13:24:49,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473164605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:49,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:49,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:49,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793585264] [2022-01-19 13:24:49,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:49,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:49,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:49,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:49,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 462 transitions, 3145 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:49,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:49,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:49,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:55,992 INFO L129 PetriNetUnfolder]: 4275/37842 cut-off events. [2022-01-19 13:24:55,993 INFO L130 PetriNetUnfolder]: For 108272/113789 co-relation queries the response was YES. [2022-01-19 13:24:56,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86875 conditions, 37842 events. 4275/37842 cut-off events. For 108272/113789 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 627233 event pairs, 1055 based on Foata normal form. 221/35497 useless extension candidates. Maximal degree in co-relation 86807. Up to 3823 conditions per place. [2022-01-19 13:24:56,430 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 52 selfloop transitions, 11 changer transitions 3/473 dead transitions. [2022-01-19 13:24:56,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 473 transitions, 3286 flow [2022-01-19 13:24:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:24:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:24:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1507 transitions. [2022-01-19 13:24:56,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9078313253012048 [2022-01-19 13:24:56,432 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1507 transitions. [2022-01-19 13:24:56,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1507 transitions. [2022-01-19 13:24:56,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:56,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1507 transitions. [2022-01-19 13:24:56,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.4) internal successors, (1507), 5 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:56,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:56,434 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:56,434 INFO L186 Difference]: Start difference. First operand has 464 places, 462 transitions, 3145 flow. Second operand 5 states and 1507 transitions. [2022-01-19 13:24:56,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 473 transitions, 3286 flow [2022-01-19 13:24:57,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 473 transitions, 3268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:24:57,102 INFO L242 Difference]: Finished difference. Result has 466 places, 460 transitions, 3103 flow [2022-01-19 13:24:57,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3103, PETRI_PLACES=466, PETRI_TRANSITIONS=460} [2022-01-19 13:24:57,102 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 172 predicate places. [2022-01-19 13:24:57,102 INFO L470 AbstractCegarLoop]: Abstraction has has 466 places, 460 transitions, 3103 flow [2022-01-19 13:24:57,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:57,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:57,103 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:57,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 13:24:57,103 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:24:57,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1880426503, now seen corresponding path program 9 times [2022-01-19 13:24:57,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:57,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817674777] [2022-01-19 13:24:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:57,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:57,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:24:57,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:57,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817674777] [2022-01-19 13:24:57,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817674777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:57,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:57,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:24:57,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271768955] [2022-01-19 13:24:57,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:57,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:24:57,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:24:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:24:57,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-01-19 13:24:57,151 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 460 transitions, 3103 flow. Second operand has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:57,151 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:57,151 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-01-19 13:24:57,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:03,088 INFO L129 PetriNetUnfolder]: 4088/35536 cut-off events. [2022-01-19 13:25:03,088 INFO L130 PetriNetUnfolder]: For 103126/108523 co-relation queries the response was YES. [2022-01-19 13:25:03,412 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82246 conditions, 35536 events. 4088/35536 cut-off events. For 103126/108523 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 581724 event pairs, 1025 based on Foata normal form. 231/33336 useless extension candidates. Maximal degree in co-relation 82178. Up to 3598 conditions per place. [2022-01-19 13:25:03,459 INFO L132 encePairwiseOnDemand]: 328/332 looper letters, 47 selfloop transitions, 9 changer transitions 6/469 dead transitions. [2022-01-19 13:25:03,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 469 transitions, 3223 flow [2022-01-19 13:25:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:25:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:25:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1504 transitions. [2022-01-19 13:25:03,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9060240963855422 [2022-01-19 13:25:03,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1504 transitions. [2022-01-19 13:25:03,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1504 transitions. [2022-01-19 13:25:03,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:03,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1504 transitions. [2022-01-19 13:25:03,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:03,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:03,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:03,462 INFO L186 Difference]: Start difference. First operand has 466 places, 460 transitions, 3103 flow. Second operand 5 states and 1504 transitions. [2022-01-19 13:25:03,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 469 transitions, 3223 flow [2022-01-19 13:25:04,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 469 transitions, 3204 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 13:25:04,016 INFO L242 Difference]: Finished difference. Result has 467 places, 457 transitions, 3039 flow [2022-01-19 13:25:04,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3039, PETRI_PLACES=467, PETRI_TRANSITIONS=457} [2022-01-19 13:25:04,017 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 173 predicate places. [2022-01-19 13:25:04,017 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 457 transitions, 3039 flow [2022-01-19 13:25:04,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:04,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:04,017 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:04,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 13:25:04,017 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:25:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:04,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1033195849, now seen corresponding path program 1 times [2022-01-19 13:25:04,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:04,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124709927] [2022-01-19 13:25:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:04,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:25:04,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:04,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124709927] [2022-01-19 13:25:04,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124709927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:25:04,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856233560] [2022-01-19 13:25:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:04,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:25:04,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:25:04,151 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:25:04,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 13:25:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:04,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 13:25:04,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:25:04,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:25:04,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:25:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:25:05,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856233560] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:25:05,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:25:05,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 29 [2022-01-19 13:25:05,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7739827] [2022-01-19 13:25:05,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:05,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:25:05,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:05,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:25:05,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2022-01-19 13:25:05,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 332 [2022-01-19 13:25:05,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 457 transitions, 3039 flow. Second operand has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:05,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:05,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 332 [2022-01-19 13:25:05,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:17,090 INFO L129 PetriNetUnfolder]: 15587/67095 cut-off events. [2022-01-19 13:25:17,090 INFO L130 PetriNetUnfolder]: For 203830/213714 co-relation queries the response was YES. [2022-01-19 13:25:18,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152942 conditions, 67095 events. 15587/67095 cut-off events. For 203830/213714 co-relation queries the response was YES. Maximal size of possible extension queue 2973. Compared 1073132 event pairs, 4748 based on Foata normal form. 1571/59979 useless extension candidates. Maximal degree in co-relation 152874. Up to 7519 conditions per place. [2022-01-19 13:25:18,423 INFO L132 encePairwiseOnDemand]: 316/332 looper letters, 227 selfloop transitions, 28 changer transitions 1/548 dead transitions. [2022-01-19 13:25:18,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 548 transitions, 4464 flow [2022-01-19 13:25:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 13:25:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 13:25:18,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3693 transitions. [2022-01-19 13:25:18,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7945352839931153 [2022-01-19 13:25:18,425 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3693 transitions. [2022-01-19 13:25:18,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3693 transitions. [2022-01-19 13:25:18,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:18,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3693 transitions. [2022-01-19 13:25:18,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 263.7857142857143) internal successors, (3693), 14 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:18,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:18,431 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 332.0) internal successors, (4980), 15 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:18,431 INFO L186 Difference]: Start difference. First operand has 467 places, 457 transitions, 3039 flow. Second operand 14 states and 3693 transitions. [2022-01-19 13:25:18,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 548 transitions, 4464 flow [2022-01-19 13:25:19,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 548 transitions, 4424 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 13:25:19,560 INFO L242 Difference]: Finished difference. Result has 477 places, 461 transitions, 3077 flow [2022-01-19 13:25:19,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2999, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3077, PETRI_PLACES=477, PETRI_TRANSITIONS=461} [2022-01-19 13:25:19,561 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 183 predicate places. [2022-01-19 13:25:19,561 INFO L470 AbstractCegarLoop]: Abstraction has has 477 places, 461 transitions, 3077 flow [2022-01-19 13:25:19,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:19,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:19,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:19,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 13:25:19,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:25:19,762 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:25:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1328221634, now seen corresponding path program 1 times [2022-01-19 13:25:19,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:19,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336909224] [2022-01-19 13:25:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:19,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:25:19,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:19,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336909224] [2022-01-19 13:25:19,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336909224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:19,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:19,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:25:19,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731244732] [2022-01-19 13:25:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:19,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:25:19,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:19,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:25:19,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:25:19,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 332 [2022-01-19 13:25:19,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 461 transitions, 3077 flow. Second operand has 7 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:19,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:19,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 332 [2022-01-19 13:25:19,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:27,365 INFO L129 PetriNetUnfolder]: 8485/41037 cut-off events. [2022-01-19 13:25:27,365 INFO L130 PetriNetUnfolder]: For 116834/124094 co-relation queries the response was YES. [2022-01-19 13:25:27,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93301 conditions, 41037 events. 8485/41037 cut-off events. For 116834/124094 co-relation queries the response was YES. Maximal size of possible extension queue 2363. Compared 653246 event pairs, 4702 based on Foata normal form. 405/36438 useless extension candidates. Maximal degree in co-relation 93232. Up to 9523 conditions per place. [2022-01-19 13:25:27,888 INFO L132 encePairwiseOnDemand]: 323/332 looper letters, 91 selfloop transitions, 11 changer transitions 66/485 dead transitions. [2022-01-19 13:25:27,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 485 transitions, 3517 flow [2022-01-19 13:25:27,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 13:25:27,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 13:25:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2169 transitions. [2022-01-19 13:25:27,890 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166415662650602 [2022-01-19 13:25:27,890 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2169 transitions. [2022-01-19 13:25:27,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2169 transitions. [2022-01-19 13:25:27,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:27,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2169 transitions. [2022-01-19 13:25:27,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 271.125) internal successors, (2169), 8 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:27,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:27,894 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:27,894 INFO L186 Difference]: Start difference. First operand has 477 places, 461 transitions, 3077 flow. Second operand 8 states and 2169 transitions. [2022-01-19 13:25:27,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 485 transitions, 3517 flow [2022-01-19 13:25:28,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 485 transitions, 3473 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-01-19 13:25:28,619 INFO L242 Difference]: Finished difference. Result has 473 places, 417 transitions, 2484 flow [2022-01-19 13:25:28,619 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2484, PETRI_PLACES=473, PETRI_TRANSITIONS=417} [2022-01-19 13:25:28,619 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 179 predicate places. [2022-01-19 13:25:28,619 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 417 transitions, 2484 flow [2022-01-19 13:25:28,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 267.85714285714283) internal successors, (1875), 7 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:28,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:28,620 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:28,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 13:25:28,620 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:25:28,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:28,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1287650472, now seen corresponding path program 1 times [2022-01-19 13:25:28,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:28,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237589820] [2022-01-19 13:25:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:28,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:28,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:25:28,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:28,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237589820] [2022-01-19 13:25:28,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237589820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:25:28,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774173003] [2022-01-19 13:25:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:28,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:25:28,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:25:28,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:25:28,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 13:25:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:28,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 13:25:28,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:25:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:25:29,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:25:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 13:25:29,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774173003] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:25:29,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:25:29,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 13:25:29,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137953519] [2022-01-19 13:25:29,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:29,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:25:29,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:25:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 13:25:29,850 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 332 [2022-01-19 13:25:29,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 417 transitions, 2484 flow. Second operand has 11 states, 11 states have (on average 260.8181818181818) internal successors, (2869), 11 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:29,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:29,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 332 [2022-01-19 13:25:29,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:36,598 INFO L129 PetriNetUnfolder]: 10249/39631 cut-off events. [2022-01-19 13:25:36,598 INFO L130 PetriNetUnfolder]: For 128507/133331 co-relation queries the response was YES. [2022-01-19 13:25:36,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98116 conditions, 39631 events. 10249/39631 cut-off events. For 128507/133331 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 585245 event pairs, 2142 based on Foata normal form. 2311/37523 useless extension candidates. Maximal degree in co-relation 98047. Up to 10620 conditions per place. [2022-01-19 13:25:37,026 INFO L132 encePairwiseOnDemand]: 316/332 looper letters, 116 selfloop transitions, 30 changer transitions 50/461 dead transitions. [2022-01-19 13:25:37,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 461 transitions, 3343 flow [2022-01-19 13:25:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 13:25:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 13:25:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3917 transitions. [2022-01-19 13:25:37,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7865461847389559 [2022-01-19 13:25:37,028 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3917 transitions. [2022-01-19 13:25:37,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3917 transitions. [2022-01-19 13:25:37,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:37,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3917 transitions. [2022-01-19 13:25:37,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 261.1333333333333) internal successors, (3917), 15 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:37,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:37,033 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:37,033 INFO L186 Difference]: Start difference. First operand has 473 places, 417 transitions, 2484 flow. Second operand 15 states and 3917 transitions. [2022-01-19 13:25:37,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 461 transitions, 3343 flow [2022-01-19 13:25:37,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 461 transitions, 3263 flow, removed 26 selfloop flow, removed 14 redundant places. [2022-01-19 13:25:37,879 INFO L242 Difference]: Finished difference. Result has 465 places, 385 transitions, 2111 flow [2022-01-19 13:25:37,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2111, PETRI_PLACES=465, PETRI_TRANSITIONS=385} [2022-01-19 13:25:37,880 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 171 predicate places. [2022-01-19 13:25:37,880 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 385 transitions, 2111 flow [2022-01-19 13:25:37,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.8181818181818) internal successors, (2869), 11 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:37,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:37,880 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:37,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-19 13:25:38,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:25:38,081 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:25:38,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:38,082 INFO L85 PathProgramCache]: Analyzing trace with hash -83746299, now seen corresponding path program 1 times [2022-01-19 13:25:38,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:38,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596486268] [2022-01-19 13:25:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:38,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:25:38,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:38,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596486268] [2022-01-19 13:25:38,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596486268] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:25:38,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154438686] [2022-01-19 13:25:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:38,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:25:38,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:25:38,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:25:38,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 13:25:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:38,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 13:25:38,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:25:38,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:25:38,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:25:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:25:39,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154438686] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:25:39,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:25:39,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2022-01-19 13:25:39,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853995126] [2022-01-19 13:25:39,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:25:39,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 13:25:39,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:39,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 13:25:39,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2022-01-19 13:25:39,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 332 [2022-01-19 13:25:39,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 385 transitions, 2111 flow. Second operand has 29 states, 29 states have (on average 226.93103448275863) internal successors, (6581), 29 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:39,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:39,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 332 [2022-01-19 13:25:39,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:56,502 INFO L129 PetriNetUnfolder]: 20539/94635 cut-off events. [2022-01-19 13:25:56,502 INFO L130 PetriNetUnfolder]: For 191236/205372 co-relation queries the response was YES. [2022-01-19 13:25:57,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205556 conditions, 94635 events. 20539/94635 cut-off events. For 191236/205372 co-relation queries the response was YES. Maximal size of possible extension queue 3933. Compared 1608855 event pairs, 7722 based on Foata normal form. 6037/93307 useless extension candidates. Maximal degree in co-relation 205494. Up to 11213 conditions per place. [2022-01-19 13:25:57,859 INFO L132 encePairwiseOnDemand]: 303/332 looper letters, 276 selfloop transitions, 83 changer transitions 25/619 dead transitions. [2022-01-19 13:25:57,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 619 transitions, 4809 flow [2022-01-19 13:25:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-19 13:25:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-01-19 13:25:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 7521 transitions. [2022-01-19 13:25:57,863 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6864731653888281 [2022-01-19 13:25:57,863 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 7521 transitions. [2022-01-19 13:25:57,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 7521 transitions. [2022-01-19 13:25:57,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:57,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 7521 transitions. [2022-01-19 13:25:57,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 227.9090909090909) internal successors, (7521), 33 states have internal predecessors, (7521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:57,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 332.0) internal successors, (11288), 34 states have internal predecessors, (11288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:57,876 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 332.0) internal successors, (11288), 34 states have internal predecessors, (11288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:57,876 INFO L186 Difference]: Start difference. First operand has 465 places, 385 transitions, 2111 flow. Second operand 33 states and 7521 transitions. [2022-01-19 13:25:57,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 619 transitions, 4809 flow [2022-01-19 13:25:59,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 619 transitions, 4724 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-01-19 13:25:59,590 INFO L242 Difference]: Finished difference. Result has 496 places, 422 transitions, 2612 flow [2022-01-19 13:25:59,590 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2612, PETRI_PLACES=496, PETRI_TRANSITIONS=422} [2022-01-19 13:25:59,590 INFO L334 CegarLoopForPetriNet]: 294 programPoint places, 202 predicate places. [2022-01-19 13:25:59,590 INFO L470 AbstractCegarLoop]: Abstraction has has 496 places, 422 transitions, 2612 flow [2022-01-19 13:25:59,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 226.93103448275863) internal successors, (6581), 29 states have internal predecessors, (6581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:59,591 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:59,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:59,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 13:25:59,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-19 13:25:59,806 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:25:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash -608065967, now seen corresponding path program 1 times [2022-01-19 13:25:59,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:59,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082735379] [2022-01-19 13:25:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:59,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:26:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:26:01,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:26:01,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082735379] [2022-01-19 13:26:01,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082735379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:26:01,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931289592] [2022-01-19 13:26:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:26:01,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:26:01,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:26:01,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:26:01,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 13:26:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:26:01,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-19 13:26:01,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:26:03,520 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 13:26:03,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-01-19 13:26:03,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:26:03,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:26:05,277 INFO L353 Elim1Store]: treesize reduction 50, result has 63.5 percent of original size [2022-01-19 13:26:05,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 66 treesize of output 104 [2022-01-19 13:26:05,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:26:05,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931289592] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 13:26:05,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 13:26:05,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 33, 19] total 84 [2022-01-19 13:26:05,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157674738] [2022-01-19 13:26:05,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 13:26:05,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-19 13:26:05,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:26:05,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-19 13:26:05,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=455, Invalid=6515, Unknown=2, NotChecked=0, Total=6972 [2022-01-19 13:26:05,707 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 332 [2022-01-19 13:26:05,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 422 transitions, 2612 flow. Second operand has 84 states, 84 states have (on average 192.1904761904762) internal successors, (16144), 84 states have internal predecessors, (16144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:05,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:26:05,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 332 [2022-01-19 13:26:05,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand