/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 07:54:07,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 07:54:07,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 07:54:07,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 07:54:07,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 07:54:07,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 07:54:07,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 07:54:07,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 07:54:07,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 07:54:07,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 07:54:07,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 07:54:07,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 07:54:07,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 07:54:07,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 07:54:07,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 07:54:07,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 07:54:07,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 07:54:07,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 07:54:07,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 07:54:07,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 07:54:07,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 07:54:07,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 07:54:07,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 07:54:07,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 07:54:07,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 07:54:07,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 07:54:07,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 07:54:07,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 07:54:07,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 07:54:07,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 07:54:07,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 07:54:07,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 07:54:07,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 07:54:07,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 07:54:07,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 07:54:07,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 07:54:07,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 07:54:07,465 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 07:54:07,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 07:54:07,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 07:54:07,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 07:54:07,471 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-Before.epf [2022-01-19 07:54:07,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 07:54:07,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 07:54:07,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 07:54:07,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 07:54:07,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 07:54:07,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 07:54:07,506 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 07:54:07,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 07:54:07,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 07:54:07,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 07:54:07,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 07:54:07,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 07:54:07,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 07:54:07,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 07:54:07,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 07:54:07,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 07:54:07,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:54:07,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 07:54:07,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 07:54:07,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 07:54:07,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 07:54:07,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 07:54:07,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 07:54:07,511 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 07:54:07,511 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 07:54:07,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 07:54:07,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 07:54:07,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 07:54:07,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 07:54:07,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 07:54:07,728 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 07:54:07,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-01-19 07:54:07,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81371c386/d69c9867ee414c99b9fc1040cb227f23/FLAGb77ec7be9 [2022-01-19 07:54:08,162 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 07:54:08,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring.wvr.c [2022-01-19 07:54:08,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81371c386/d69c9867ee414c99b9fc1040cb227f23/FLAGb77ec7be9 [2022-01-19 07:54:08,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81371c386/d69c9867ee414c99b9fc1040cb227f23 [2022-01-19 07:54:08,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 07:54:08,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 07:54:08,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 07:54:08,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 07:54:08,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 07:54:08,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed5eba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08, skipping insertion in model container [2022-01-19 07:54:08,189 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 07:54:08,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 07:54:08,438 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/popl20-bad-ring.wvr.c[3947,3960] [2022-01-19 07:54:08,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:54:08,450 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 07:54:08,472 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/popl20-bad-ring.wvr.c[3947,3960] [2022-01-19 07:54:08,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 07:54:08,485 INFO L208 MainTranslator]: Completed translation [2022-01-19 07:54:08,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08 WrapperNode [2022-01-19 07:54:08,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 07:54:08,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 07:54:08,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 07:54:08,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 07:54:08,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,524 INFO L137 Inliner]: procedures = 25, calls = 61, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 315 [2022-01-19 07:54:08,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 07:54:08,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 07:54:08,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 07:54:08,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 07:54:08,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 07:54:08,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 07:54:08,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 07:54:08,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 07:54:08,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (1/1) ... [2022-01-19 07:54:08,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 07:54:08,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:08,592 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 07:54:08,600 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 07:54:08,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 07:54:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 07:54:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 07:54:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 07:54:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 07:54:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 07:54:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 07:54:08,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 07:54:08,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 07:54:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 07:54:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 07:54:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 07:54:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 07:54:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 07:54:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 07:54:08,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 07:54:08,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 07:54:08,625 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 07:54:08,734 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 07:54:08,735 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 07:54:09,065 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 07:54:09,258 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 07:54:09,258 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 07:54:09,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:54:09 BoogieIcfgContainer [2022-01-19 07:54:09,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 07:54:09,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 07:54:09,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 07:54:09,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 07:54:09,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 07:54:08" (1/3) ... [2022-01-19 07:54:09,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550b8ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:54:09, skipping insertion in model container [2022-01-19 07:54:09,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 07:54:08" (2/3) ... [2022-01-19 07:54:09,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550b8ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 07:54:09, skipping insertion in model container [2022-01-19 07:54:09,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 07:54:09" (3/3) ... [2022-01-19 07:54:09,267 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring.wvr.c [2022-01-19 07:54:09,271 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 07:54:09,271 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 07:54:09,271 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 07:54:09,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,354 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,355 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,356 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,357 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,358 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,359 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,360 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,361 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,366 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,370 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,371 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,372 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,373 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,374 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,375 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,375 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,375 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,375 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,378 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,379 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,379 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,379 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,379 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,380 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,381 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,381 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,382 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,383 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~short13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,385 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~s~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,386 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,387 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,387 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,387 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~short18#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post16#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem17#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem15#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,388 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post19#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,389 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_~t~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~short8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~l~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,390 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,391 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,392 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 07:54:09,394 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 07:54:09,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 07:54:09,439 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 07:54:09,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 07:54:09,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 255 places, 267 transitions, 558 flow [2022-01-19 07:54:09,584 INFO L129 PetriNetUnfolder]: 22/264 cut-off events. [2022-01-19 07:54:09,584 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:54:09,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 22/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 157 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 224. Up to 3 conditions per place. [2022-01-19 07:54:09,589 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 267 transitions, 558 flow [2022-01-19 07:54:09,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 253 transitions, 524 flow [2022-01-19 07:54:09,626 INFO L129 PetriNetUnfolder]: 22/252 cut-off events. [2022-01-19 07:54:09,626 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 07:54:09,626 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:09,627 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 07:54:09,627 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 07:54:09,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:09,633 INFO L85 PathProgramCache]: Analyzing trace with hash 956219309, now seen corresponding path program 1 times [2022-01-19 07:54:09,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:09,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797508683] [2022-01-19 07:54:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:09,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:09,883 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 07:54:09,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:09,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797508683] [2022-01-19 07:54:09,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797508683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:09,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:09,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 07:54:09,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838214396] [2022-01-19 07:54:09,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:09,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 07:54:09,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 07:54:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 07:54:09,917 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 267 [2022-01-19 07:54:09,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 253 transitions, 524 flow. Second operand has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 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 07:54:09,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:09,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 267 [2022-01-19 07:54:09,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:10,085 INFO L129 PetriNetUnfolder]: 137/624 cut-off events. [2022-01-19 07:54:10,086 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-01-19 07:54:10,091 INFO L84 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 624 events. 137/624 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2446 event pairs, 74 based on Foata normal form. 97/655 useless extension candidates. Maximal degree in co-relation 622. Up to 197 conditions per place. [2022-01-19 07:54:10,095 INFO L132 encePairwiseOnDemand]: 251/267 looper letters, 13 selfloop transitions, 0 changer transitions 8/237 dead transitions. [2022-01-19 07:54:10,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 518 flow [2022-01-19 07:54:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 07:54:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 07:54:10,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 503 transitions. [2022-01-19 07:54:10,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9419475655430711 [2022-01-19 07:54:10,114 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 503 transitions. [2022-01-19 07:54:10,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 503 transitions. [2022-01-19 07:54:10,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:10,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 503 transitions. [2022-01-19 07:54:10,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 251.5) internal successors, (503), 2 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:54:10,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 07:54:10,131 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 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 07:54:10,132 INFO L186 Difference]: Start difference. First operand has 241 places, 253 transitions, 524 flow. Second operand 2 states and 503 transitions. [2022-01-19 07:54:10,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 518 flow [2022-01-19 07:54:10,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 237 transitions, 506 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 07:54:10,144 INFO L242 Difference]: Finished difference. Result has 236 places, 229 transitions, 464 flow [2022-01-19 07:54:10,145 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=464, PETRI_PLACES=236, PETRI_TRANSITIONS=229} [2022-01-19 07:54:10,152 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -5 predicate places. [2022-01-19 07:54:10,152 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 229 transitions, 464 flow [2022-01-19 07:54:10,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 243.0) internal successors, (486), 2 states have internal predecessors, (486), 0 states have call successors, (0), 0 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 07:54:10,153 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:10,154 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] [2022-01-19 07:54:10,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 07:54:10,154 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 07:54:10,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1907627099, now seen corresponding path program 1 times [2022-01-19 07:54:10,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:10,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399953992] [2022-01-19 07:54:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:10,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:10,444 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 07:54:10,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:10,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399953992] [2022-01-19 07:54:10,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399953992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:10,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:54:10,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342846772] [2022-01-19 07:54:10,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:10,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:54:10,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:54:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:54:10,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 267 [2022-01-19 07:54:10,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 229 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 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 07:54:10,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:10,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 267 [2022-01-19 07:54:10,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:10,572 INFO L129 PetriNetUnfolder]: 125/535 cut-off events. [2022-01-19 07:54:10,572 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 07:54:10,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 535 events. 125/535 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1784 event pairs, 29 based on Foata normal form. 10/511 useless extension candidates. Maximal degree in co-relation 745. Up to 142 conditions per place. [2022-01-19 07:54:10,577 INFO L132 encePairwiseOnDemand]: 264/267 looper letters, 22 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2022-01-19 07:54:10,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 236 transitions, 528 flow [2022-01-19 07:54:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:54:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:54:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2022-01-19 07:54:10,580 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9038701622971286 [2022-01-19 07:54:10,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 724 transitions. [2022-01-19 07:54:10,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 724 transitions. [2022-01-19 07:54:10,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:10,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 724 transitions. [2022-01-19 07:54:10,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 07:54:10,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 07:54:10,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 07:54:10,586 INFO L186 Difference]: Start difference. First operand has 236 places, 229 transitions, 464 flow. Second operand 3 states and 724 transitions. [2022-01-19 07:54:10,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 236 transitions, 528 flow [2022-01-19 07:54:10,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 236 transitions, 528 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 07:54:10,596 INFO L242 Difference]: Finished difference. Result has 231 places, 230 transitions, 476 flow [2022-01-19 07:54:10,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=231, PETRI_TRANSITIONS=230} [2022-01-19 07:54:10,597 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -10 predicate places. [2022-01-19 07:54:10,597 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 230 transitions, 476 flow [2022-01-19 07:54:10,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 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 07:54:10,598 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:10,598 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] [2022-01-19 07:54:10,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 07:54:10,598 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 07:54:10,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:10,599 INFO L85 PathProgramCache]: Analyzing trace with hash -104740663, now seen corresponding path program 2 times [2022-01-19 07:54:10,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:10,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436737030] [2022-01-19 07:54:10,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:10,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:10,776 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 07:54:10,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:10,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436737030] [2022-01-19 07:54:10,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436737030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:10,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:10,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:54:10,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975426848] [2022-01-19 07:54:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:10,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:54:10,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:54:10,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:54:10,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2022-01-19 07:54:10,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 230 transitions, 476 flow. Second operand has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 07:54:10,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:10,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2022-01-19 07:54:10,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:11,052 INFO L129 PetriNetUnfolder]: 152/705 cut-off events. [2022-01-19 07:54:11,053 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-01-19 07:54:11,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 705 events. 152/705 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2617 event pairs, 84 based on Foata normal form. 9/664 useless extension candidates. Maximal degree in co-relation 1087. Up to 210 conditions per place. [2022-01-19 07:54:11,057 INFO L132 encePairwiseOnDemand]: 257/267 looper letters, 48 selfloop transitions, 8 changer transitions 21/255 dead transitions. [2022-01-19 07:54:11,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 255 transitions, 684 flow [2022-01-19 07:54:11,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:54:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:54:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1868 transitions. [2022-01-19 07:54:11,061 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7773616312942155 [2022-01-19 07:54:11,061 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1868 transitions. [2022-01-19 07:54:11,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1868 transitions. [2022-01-19 07:54:11,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:11,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1868 transitions. [2022-01-19 07:54:11,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.55555555555554) internal successors, (1868), 9 states have internal predecessors, (1868), 0 states have call successors, (0), 0 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 07:54:11,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 07:54:11,071 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 07:54:11,071 INFO L186 Difference]: Start difference. First operand has 231 places, 230 transitions, 476 flow. Second operand 9 states and 1868 transitions. [2022-01-19 07:54:11,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 255 transitions, 684 flow [2022-01-19 07:54:11,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 255 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:54:11,076 INFO L242 Difference]: Finished difference. Result has 240 places, 231 transitions, 502 flow [2022-01-19 07:54:11,077 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=502, PETRI_PLACES=240, PETRI_TRANSITIONS=231} [2022-01-19 07:54:11,079 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -1 predicate places. [2022-01-19 07:54:11,079 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 231 transitions, 502 flow [2022-01-19 07:54:11,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.16666666666666) internal successors, (1231), 6 states have internal predecessors, (1231), 0 states have call successors, (0), 0 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 07:54:11,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:11,087 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] [2022-01-19 07:54:11,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 07:54:11,087 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 07:54:11,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:11,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1681614449, now seen corresponding path program 1 times [2022-01-19 07:54:11,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:11,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193516681] [2022-01-19 07:54:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:11,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:11,292 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 07:54:11,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:11,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193516681] [2022-01-19 07:54:11,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193516681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:11,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:11,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:54:11,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206058844] [2022-01-19 07:54:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:11,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:54:11,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:54:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:54:11,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2022-01-19 07:54:11,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 231 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 07:54:11,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:11,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2022-01-19 07:54:11,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:11,472 INFO L129 PetriNetUnfolder]: 127/675 cut-off events. [2022-01-19 07:54:11,473 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2022-01-19 07:54:11,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 675 events. 127/675 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2114 event pairs, 67 based on Foata normal form. 8/644 useless extension candidates. Maximal degree in co-relation 1044. Up to 214 conditions per place. [2022-01-19 07:54:11,477 INFO L132 encePairwiseOnDemand]: 255/267 looper letters, 49 selfloop transitions, 8 changer transitions 29/264 dead transitions. [2022-01-19 07:54:11,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 264 transitions, 761 flow [2022-01-19 07:54:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 07:54:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 07:54:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1877 transitions. [2022-01-19 07:54:11,481 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7811069496462755 [2022-01-19 07:54:11,481 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1877 transitions. [2022-01-19 07:54:11,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1877 transitions. [2022-01-19 07:54:11,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:11,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1877 transitions. [2022-01-19 07:54:11,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 208.55555555555554) internal successors, (1877), 9 states have internal predecessors, (1877), 0 states have call successors, (0), 0 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 07:54:11,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 07:54:11,491 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 267.0) internal successors, (2670), 10 states have internal predecessors, (2670), 0 states have call successors, (0), 0 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 07:54:11,491 INFO L186 Difference]: Start difference. First operand has 240 places, 231 transitions, 502 flow. Second operand 9 states and 1877 transitions. [2022-01-19 07:54:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 264 transitions, 761 flow [2022-01-19 07:54:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 264 transitions, 733 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-01-19 07:54:11,497 INFO L242 Difference]: Finished difference. Result has 242 places, 232 transitions, 516 flow [2022-01-19 07:54:11,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=516, PETRI_PLACES=242, PETRI_TRANSITIONS=232} [2022-01-19 07:54:11,498 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-01-19 07:54:11,498 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 232 transitions, 516 flow [2022-01-19 07:54:11,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 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 07:54:11,499 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:11,499 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] [2022-01-19 07:54:11,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 07:54:11,499 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 07:54:11,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:11,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1190083129, now seen corresponding path program 1 times [2022-01-19 07:54:11,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:11,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922680813] [2022-01-19 07:54:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:11,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:11,619 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 07:54:11,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:11,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922680813] [2022-01-19 07:54:11,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922680813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:11,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:11,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 07:54:11,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683656626] [2022-01-19 07:54:11,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:11,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 07:54:11,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:11,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 07:54:11,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:54:11,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 267 [2022-01-19 07:54:11,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 232 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 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 07:54:11,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:11,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 267 [2022-01-19 07:54:11,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:11,813 INFO L129 PetriNetUnfolder]: 245/870 cut-off events. [2022-01-19 07:54:11,813 INFO L130 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2022-01-19 07:54:11,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 870 events. 245/870 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4090 event pairs, 84 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 1576. Up to 226 conditions per place. [2022-01-19 07:54:11,819 INFO L132 encePairwiseOnDemand]: 262/267 looper letters, 57 selfloop transitions, 2 changer transitions 7/249 dead transitions. [2022-01-19 07:54:11,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 249 transitions, 699 flow [2022-01-19 07:54:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 07:54:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 07:54:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2022-01-19 07:54:11,822 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7752808988764045 [2022-01-19 07:54:11,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2022-01-19 07:54:11,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2022-01-19 07:54:11,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:11,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2022-01-19 07:54:11,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 07:54:11,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 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 07:54:11,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 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 07:54:11,828 INFO L186 Difference]: Start difference. First operand has 242 places, 232 transitions, 516 flow. Second operand 5 states and 1035 transitions. [2022-01-19 07:54:11,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 249 transitions, 699 flow [2022-01-19 07:54:11,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 685 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-01-19 07:54:11,833 INFO L242 Difference]: Finished difference. Result has 242 places, 233 transitions, 518 flow [2022-01-19 07:54:11,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=242, PETRI_TRANSITIONS=233} [2022-01-19 07:54:11,837 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 1 predicate places. [2022-01-19 07:54:11,837 INFO L470 AbstractCegarLoop]: Abstraction has has 242 places, 233 transitions, 518 flow [2022-01-19 07:54:11,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 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 07:54:11,838 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:11,838 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] [2022-01-19 07:54:11,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 07:54:11,839 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 07:54:11,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:11,839 INFO L85 PathProgramCache]: Analyzing trace with hash 675274965, now seen corresponding path program 1 times [2022-01-19 07:54:11,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:11,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141343031] [2022-01-19 07:54:11,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:11,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:12,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:12,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141343031] [2022-01-19 07:54:12,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141343031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:12,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:12,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 07:54:12,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501650964] [2022-01-19 07:54:12,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:12,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 07:54:12,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 07:54:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 07:54:12,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 267 [2022-01-19 07:54:12,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 233 transitions, 518 flow. Second operand has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 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 07:54:12,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:12,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 267 [2022-01-19 07:54:12,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:12,128 INFO L129 PetriNetUnfolder]: 138/580 cut-off events. [2022-01-19 07:54:12,128 INFO L130 PetriNetUnfolder]: For 122/122 co-relation queries the response was YES. [2022-01-19 07:54:12,130 INFO L84 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 580 events. 138/580 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1961 event pairs, 50 based on Foata normal form. 11/562 useless extension candidates. Maximal degree in co-relation 982. Up to 128 conditions per place. [2022-01-19 07:54:12,132 INFO L132 encePairwiseOnDemand]: 262/267 looper letters, 22 selfloop transitions, 4 changer transitions 3/241 dead transitions. [2022-01-19 07:54:12,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 241 transitions, 604 flow [2022-01-19 07:54:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 07:54:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 07:54:12,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-01-19 07:54:12,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8976279650436954 [2022-01-19 07:54:12,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-01-19 07:54:12,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-01-19 07:54:12,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:12,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-01-19 07:54:12,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 07:54:12,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 07:54:12,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 07:54:12,138 INFO L186 Difference]: Start difference. First operand has 242 places, 233 transitions, 518 flow. Second operand 3 states and 719 transitions. [2022-01-19 07:54:12,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 241 transitions, 604 flow [2022-01-19 07:54:12,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 241 transitions, 598 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 07:54:12,144 INFO L242 Difference]: Finished difference. Result has 240 places, 234 transitions, 530 flow [2022-01-19 07:54:12,145 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=240, PETRI_TRANSITIONS=234} [2022-01-19 07:54:12,146 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, -1 predicate places. [2022-01-19 07:54:12,146 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 234 transitions, 530 flow [2022-01-19 07:54:12,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 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 07:54:12,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:12,147 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] [2022-01-19 07:54:12,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 07:54:12,147 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 07:54:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1313117807, now seen corresponding path program 2 times [2022-01-19 07:54:12,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:12,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080751585] [2022-01-19 07:54:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:12,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:12,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080751585] [2022-01-19 07:54:12,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080751585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:12,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:12,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 07:54:12,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812267364] [2022-01-19 07:54:12,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:12,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 07:54:12,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:12,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 07:54:12,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 07:54:12,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 267 [2022-01-19 07:54:12,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 234 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 206.83333333333334) internal successors, (1241), 6 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 07:54:12,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:12,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 267 [2022-01-19 07:54:12,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:12,500 INFO L129 PetriNetUnfolder]: 188/782 cut-off events. [2022-01-19 07:54:12,501 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-01-19 07:54:12,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 782 events. 188/782 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3238 event pairs, 121 based on Foata normal form. 9/748 useless extension candidates. Maximal degree in co-relation 1448. Up to 224 conditions per place. [2022-01-19 07:54:12,505 INFO L132 encePairwiseOnDemand]: 259/267 looper letters, 53 selfloop transitions, 6 changer transitions 12/250 dead transitions. [2022-01-19 07:54:12,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 250 transitions, 721 flow [2022-01-19 07:54:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 07:54:12,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 07:54:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1460 transitions. [2022-01-19 07:54:12,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7811663991439273 [2022-01-19 07:54:12,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1460 transitions. [2022-01-19 07:54:12,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1460 transitions. [2022-01-19 07:54:12,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:12,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1460 transitions. [2022-01-19 07:54:12,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.57142857142858) internal successors, (1460), 7 states have internal predecessors, (1460), 0 states have call successors, (0), 0 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 07:54:12,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 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 07:54:12,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 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 07:54:12,517 INFO L186 Difference]: Start difference. First operand has 240 places, 234 transitions, 530 flow. Second operand 7 states and 1460 transitions. [2022-01-19 07:54:12,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 250 transitions, 721 flow [2022-01-19 07:54:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 250 transitions, 717 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 07:54:12,526 INFO L242 Difference]: Finished difference. Result has 247 places, 235 transitions, 548 flow [2022-01-19 07:54:12,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=548, PETRI_PLACES=247, PETRI_TRANSITIONS=235} [2022-01-19 07:54:12,527 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 6 predicate places. [2022-01-19 07:54:12,527 INFO L470 AbstractCegarLoop]: Abstraction has has 247 places, 235 transitions, 548 flow [2022-01-19 07:54:12,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 206.83333333333334) internal successors, (1241), 6 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 07:54:12,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:12,529 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 07:54:12,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 07:54:12,529 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 07:54:12,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:12,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1955912811, now seen corresponding path program 1 times [2022-01-19 07:54:12,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:12,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402472615] [2022-01-19 07:54:12,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:12,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:12,708 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 07:54:12,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402472615] [2022-01-19 07:54:12,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402472615] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817490113] [2022-01-19 07:54:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:12,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:12,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:12,715 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 07:54:12,744 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 07:54:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:12,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 07:54:12,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:13,668 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 07:54:13,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:54:13,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 4 [2022-01-19 07:54:14,424 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 07:54:14,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817490113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:54:14,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:54:14,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-19 07:54:14,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427554016] [2022-01-19 07:54:14,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:54:14,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-19 07:54:14,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:14,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-19 07:54:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-01-19 07:54:14,432 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 267 [2022-01-19 07:54:14,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 235 transitions, 548 flow. Second operand has 25 states, 25 states have (on average 196.0) internal successors, (4900), 25 states have internal predecessors, (4900), 0 states have call successors, (0), 0 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 07:54:14,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:14,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 267 [2022-01-19 07:54:14,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:14,981 INFO L129 PetriNetUnfolder]: 189/967 cut-off events. [2022-01-19 07:54:14,981 INFO L130 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2022-01-19 07:54:14,984 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1764 conditions, 967 events. 189/967 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4300 event pairs, 64 based on Foata normal form. 56/973 useless extension candidates. Maximal degree in co-relation 1752. Up to 187 conditions per place. [2022-01-19 07:54:14,986 INFO L132 encePairwiseOnDemand]: 246/267 looper letters, 52 selfloop transitions, 22 changer transitions 61/307 dead transitions. [2022-01-19 07:54:14,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 307 transitions, 1045 flow [2022-01-19 07:54:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 07:54:14,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 07:54:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4161 transitions. [2022-01-19 07:54:14,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7421080791867308 [2022-01-19 07:54:14,995 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4161 transitions. [2022-01-19 07:54:14,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4161 transitions. [2022-01-19 07:54:14,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:14,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4161 transitions. [2022-01-19 07:54:15,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 198.14285714285714) internal successors, (4161), 21 states have internal predecessors, (4161), 0 states have call successors, (0), 0 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 07:54:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 267.0) internal successors, (5874), 22 states have internal predecessors, (5874), 0 states have call successors, (0), 0 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 07:54:15,015 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 267.0) internal successors, (5874), 22 states have internal predecessors, (5874), 0 states have call successors, (0), 0 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 07:54:15,015 INFO L186 Difference]: Start difference. First operand has 247 places, 235 transitions, 548 flow. Second operand 21 states and 4161 transitions. [2022-01-19 07:54:15,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 307 transitions, 1045 flow [2022-01-19 07:54:15,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 307 transitions, 1023 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-01-19 07:54:15,021 INFO L242 Difference]: Finished difference. Result has 270 places, 240 transitions, 640 flow [2022-01-19 07:54:15,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=640, PETRI_PLACES=270, PETRI_TRANSITIONS=240} [2022-01-19 07:54:15,023 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 29 predicate places. [2022-01-19 07:54:15,023 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 240 transitions, 640 flow [2022-01-19 07:54:15,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 196.0) internal successors, (4900), 25 states have internal predecessors, (4900), 0 states have call successors, (0), 0 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 07:54:15,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:15,037 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:15,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 07:54:15,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:15,252 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 07:54:15,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1813303521, now seen corresponding path program 2 times [2022-01-19 07:54:15,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:15,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493494482] [2022-01-19 07:54:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:15,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-19 07:54:15,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:15,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493494482] [2022-01-19 07:54:15,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493494482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041303275] [2022-01-19 07:54:15,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:54:15,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:15,388 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 07:54:15,408 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 07:54:15,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:54:15,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:54:15,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-19 07:54:15,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:16,465 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 07:54:16,467 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 34 treesize of output 10 [2022-01-19 07:54:16,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:16,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:54:16,797 INFO L353 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2022-01-19 07:54:16,799 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 19 [2022-01-19 07:54:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-19 07:54:17,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041303275] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:54:17,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:54:17,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 6] total 23 [2022-01-19 07:54:17,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674398796] [2022-01-19 07:54:17,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:54:17,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 07:54:17,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 07:54:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2022-01-19 07:54:17,355 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 267 [2022-01-19 07:54:17,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 240 transitions, 640 flow. Second operand has 23 states, 23 states have (on average 153.0) internal successors, (3519), 23 states have internal predecessors, (3519), 0 states have call successors, (0), 0 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 07:54:17,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:17,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 267 [2022-01-19 07:54:17,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:18,257 INFO L129 PetriNetUnfolder]: 787/2085 cut-off events. [2022-01-19 07:54:18,257 INFO L130 PetriNetUnfolder]: For 3410/3520 co-relation queries the response was YES. [2022-01-19 07:54:18,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5228 conditions, 2085 events. 787/2085 cut-off events. For 3410/3520 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11671 event pairs, 119 based on Foata normal form. 2/1959 useless extension candidates. Maximal degree in co-relation 5208. Up to 651 conditions per place. [2022-01-19 07:54:18,273 INFO L132 encePairwiseOnDemand]: 231/267 looper letters, 195 selfloop transitions, 70 changer transitions 0/397 dead transitions. [2022-01-19 07:54:18,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 397 transitions, 1743 flow [2022-01-19 07:54:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-19 07:54:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-01-19 07:54:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4864 transitions. [2022-01-19 07:54:18,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5692883895131086 [2022-01-19 07:54:18,283 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4864 transitions. [2022-01-19 07:54:18,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4864 transitions. [2022-01-19 07:54:18,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:18,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4864 transitions. [2022-01-19 07:54:18,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 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 07:54:18,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 267.0) internal successors, (8811), 33 states have internal predecessors, (8811), 0 states have call successors, (0), 0 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 07:54:18,304 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 267.0) internal successors, (8811), 33 states have internal predecessors, (8811), 0 states have call successors, (0), 0 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 07:54:18,305 INFO L186 Difference]: Start difference. First operand has 270 places, 240 transitions, 640 flow. Second operand 32 states and 4864 transitions. [2022-01-19 07:54:18,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 397 transitions, 1743 flow [2022-01-19 07:54:18,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 397 transitions, 1600 flow, removed 50 selfloop flow, removed 10 redundant places. [2022-01-19 07:54:18,317 INFO L242 Difference]: Finished difference. Result has 300 places, 301 transitions, 1127 flow [2022-01-19 07:54:18,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1127, PETRI_PLACES=300, PETRI_TRANSITIONS=301} [2022-01-19 07:54:18,318 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 59 predicate places. [2022-01-19 07:54:18,318 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 301 transitions, 1127 flow [2022-01-19 07:54:18,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 153.0) internal successors, (3519), 23 states have internal predecessors, (3519), 0 states have call successors, (0), 0 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 07:54:18,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:18,319 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:18,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 07:54:18,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-19 07:54:18,543 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 07:54:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:18,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1897090553, now seen corresponding path program 3 times [2022-01-19 07:54:18,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:18,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568922499] [2022-01-19 07:54:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:18,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:19,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:19,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568922499] [2022-01-19 07:54:19,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568922499] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:19,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800528969] [2022-01-19 07:54:19,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:54:19,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:19,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:19,248 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 07:54:19,263 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 07:54:19,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 07:54:19,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:54:19,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-19 07:54:19,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 07:54:19,996 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 07:54:20,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 07:54:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-19 07:54:20,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:54:20,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800528969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:20,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:54:20,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 32 [2022-01-19 07:54:20,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660090693] [2022-01-19 07:54:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:20,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-19 07:54:20,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-19 07:54:20,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=917, Unknown=0, NotChecked=0, Total=992 [2022-01-19 07:54:20,096 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 267 [2022-01-19 07:54:20,098 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 301 transitions, 1127 flow. Second operand has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 07:54:20,098 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:20,098 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 267 [2022-01-19 07:54:20,098 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:21,002 INFO L129 PetriNetUnfolder]: 1100/2821 cut-off events. [2022-01-19 07:54:21,003 INFO L130 PetriNetUnfolder]: For 7031/7239 co-relation queries the response was YES. [2022-01-19 07:54:21,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9114 conditions, 2821 events. 1100/2821 cut-off events. For 7031/7239 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 17927 event pairs, 333 based on Foata normal form. 30/2700 useless extension candidates. Maximal degree in co-relation 9082. Up to 823 conditions per place. [2022-01-19 07:54:21,033 INFO L132 encePairwiseOnDemand]: 242/267 looper letters, 109 selfloop transitions, 35 changer transitions 0/335 dead transitions. [2022-01-19 07:54:21,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 335 transitions, 1641 flow [2022-01-19 07:54:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 07:54:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 07:54:21,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3268 transitions. [2022-01-19 07:54:21,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7199823749724609 [2022-01-19 07:54:21,041 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3268 transitions. [2022-01-19 07:54:21,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3268 transitions. [2022-01-19 07:54:21,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:21,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3268 transitions. [2022-01-19 07:54:21,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 192.23529411764707) internal successors, (3268), 17 states have internal predecessors, (3268), 0 states have call successors, (0), 0 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 07:54:21,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 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 07:54:21,056 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 267.0) internal successors, (4806), 18 states have internal predecessors, (4806), 0 states have call successors, (0), 0 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 07:54:21,056 INFO L186 Difference]: Start difference. First operand has 300 places, 301 transitions, 1127 flow. Second operand 17 states and 3268 transitions. [2022-01-19 07:54:21,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 335 transitions, 1641 flow [2022-01-19 07:54:21,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 335 transitions, 1555 flow, removed 33 selfloop flow, removed 8 redundant places. [2022-01-19 07:54:21,070 INFO L242 Difference]: Finished difference. Result has 310 places, 306 transitions, 1192 flow [2022-01-19 07:54:21,071 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1192, PETRI_PLACES=310, PETRI_TRANSITIONS=306} [2022-01-19 07:54:21,071 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 69 predicate places. [2022-01-19 07:54:21,072 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 306 transitions, 1192 flow [2022-01-19 07:54:21,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 07:54:21,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:21,073 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:21,100 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 07:54:21,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:21,296 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 07:54:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash -747039377, now seen corresponding path program 4 times [2022-01-19 07:54:21,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:21,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341116461] [2022-01-19 07:54:21,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:21,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:22,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:22,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341116461] [2022-01-19 07:54:22,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341116461] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:22,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756074643] [2022-01-19 07:54:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 07:54:22,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:22,010 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 07:54:22,011 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 07:54:22,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 07:54:22,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:54:22,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-19 07:54:22,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:22,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 07:54:22,262 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-19 07:54:22,263 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-01-19 07:54:22,485 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-19 07:54:22,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-01-19 07:54:23,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 07:54:23,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-19 07:54:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:23,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:54:24,642 INFO L353 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2022-01-19 07:54:24,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 312 treesize of output 284 [2022-01-19 07:54:24,662 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 07:54:24,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 268 treesize of output 220 [2022-01-19 07:54:24,672 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-01-19 07:54:24,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 174 treesize of output 150 [2022-01-19 07:54:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 07:54:26,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756074643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:54:26,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:54:26,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 23] total 64 [2022-01-19 07:54:26,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493836922] [2022-01-19 07:54:26,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:54:26,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-19 07:54:26,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-19 07:54:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=3691, Unknown=1, NotChecked=0, Total=4032 [2022-01-19 07:54:26,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2022-01-19 07:54:26,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 306 transitions, 1192 flow. Second operand has 64 states, 64 states have (on average 153.15625) internal successors, (9802), 64 states have internal predecessors, (9802), 0 states have call successors, (0), 0 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 07:54:26,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:26,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2022-01-19 07:54:26,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:31,918 INFO L129 PetriNetUnfolder]: 1276/3471 cut-off events. [2022-01-19 07:54:31,918 INFO L130 PetriNetUnfolder]: For 8323/8535 co-relation queries the response was YES. [2022-01-19 07:54:31,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11189 conditions, 3471 events. 1276/3471 cut-off events. For 8323/8535 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 23982 event pairs, 221 based on Foata normal form. 17/3321 useless extension candidates. Maximal degree in co-relation 11154. Up to 1524 conditions per place. [2022-01-19 07:54:31,955 INFO L132 encePairwiseOnDemand]: 208/267 looper letters, 224 selfloop transitions, 163 changer transitions 0/530 dead transitions. [2022-01-19 07:54:31,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 530 transitions, 2907 flow [2022-01-19 07:54:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-19 07:54:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-01-19 07:54:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 11659 transitions. [2022-01-19 07:54:31,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2022-01-19 07:54:31,972 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 11659 transitions. [2022-01-19 07:54:31,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 11659 transitions. [2022-01-19 07:54:31,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:31,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 11659 transitions. [2022-01-19 07:54:31,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 153.4078947368421) internal successors, (11659), 76 states have internal predecessors, (11659), 0 states have call successors, (0), 0 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 07:54:32,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 267.0) internal successors, (20559), 77 states have internal predecessors, (20559), 0 states have call successors, (0), 0 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 07:54:32,024 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 267.0) internal successors, (20559), 77 states have internal predecessors, (20559), 0 states have call successors, (0), 0 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 07:54:32,025 INFO L186 Difference]: Start difference. First operand has 310 places, 306 transitions, 1192 flow. Second operand 76 states and 11659 transitions. [2022-01-19 07:54:32,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 530 transitions, 2907 flow [2022-01-19 07:54:32,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 530 transitions, 2803 flow, removed 4 selfloop flow, removed 14 redundant places. [2022-01-19 07:54:32,049 INFO L242 Difference]: Finished difference. Result has 384 places, 415 transitions, 2116 flow [2022-01-19 07:54:32,050 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=2116, PETRI_PLACES=384, PETRI_TRANSITIONS=415} [2022-01-19 07:54:32,050 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 143 predicate places. [2022-01-19 07:54:32,050 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 415 transitions, 2116 flow [2022-01-19 07:54:32,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 153.15625) internal successors, (9802), 64 states have internal predecessors, (9802), 0 states have call successors, (0), 0 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 07:54:32,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:32,053 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:32,079 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 07:54:32,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:32,267 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 07:54:32,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 529451187, now seen corresponding path program 5 times [2022-01-19 07:54:32,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:32,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159309004] [2022-01-19 07:54:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:32,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-19 07:54:32,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:32,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159309004] [2022-01-19 07:54:32,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159309004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:32,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 07:54:32,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-19 07:54:32,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977214095] [2022-01-19 07:54:32,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:32,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 07:54:32,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 07:54:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-19 07:54:32,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 267 [2022-01-19 07:54:32,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 415 transitions, 2116 flow. Second operand has 13 states, 13 states have (on average 189.6153846153846) internal successors, (2465), 13 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:54:32,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:32,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 267 [2022-01-19 07:54:32,535 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:33,680 INFO L129 PetriNetUnfolder]: 1552/3922 cut-off events. [2022-01-19 07:54:33,681 INFO L130 PetriNetUnfolder]: For 17594/17877 co-relation queries the response was YES. [2022-01-19 07:54:33,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15351 conditions, 3922 events. 1552/3922 cut-off events. For 17594/17877 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27161 event pairs, 230 based on Foata normal form. 48/3785 useless extension candidates. Maximal degree in co-relation 15304. Up to 1298 conditions per place. [2022-01-19 07:54:33,737 INFO L132 encePairwiseOnDemand]: 242/267 looper letters, 135 selfloop transitions, 68 changer transitions 0/438 dead transitions. [2022-01-19 07:54:33,737 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 438 transitions, 2691 flow [2022-01-19 07:54:33,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 07:54:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 07:54:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3417 transitions. [2022-01-19 07:54:33,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7109862671660424 [2022-01-19 07:54:33,743 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3417 transitions. [2022-01-19 07:54:33,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3417 transitions. [2022-01-19 07:54:33,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:33,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3417 transitions. [2022-01-19 07:54:33,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 189.83333333333334) internal successors, (3417), 18 states have internal predecessors, (3417), 0 states have call successors, (0), 0 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 07:54:33,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 267.0) internal successors, (5073), 19 states have internal predecessors, (5073), 0 states have call successors, (0), 0 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 07:54:33,753 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 267.0) internal successors, (5073), 19 states have internal predecessors, (5073), 0 states have call successors, (0), 0 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 07:54:33,753 INFO L186 Difference]: Start difference. First operand has 384 places, 415 transitions, 2116 flow. Second operand 18 states and 3417 transitions. [2022-01-19 07:54:33,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 438 transitions, 2691 flow [2022-01-19 07:54:33,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 438 transitions, 2550 flow, removed 33 selfloop flow, removed 27 redundant places. [2022-01-19 07:54:33,787 INFO L242 Difference]: Finished difference. Result has 375 places, 412 transitions, 2103 flow [2022-01-19 07:54:33,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2103, PETRI_PLACES=375, PETRI_TRANSITIONS=412} [2022-01-19 07:54:33,788 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 134 predicate places. [2022-01-19 07:54:33,788 INFO L470 AbstractCegarLoop]: Abstraction has has 375 places, 412 transitions, 2103 flow [2022-01-19 07:54:33,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 189.6153846153846) internal successors, (2465), 13 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 07:54:33,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:33,789 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:33,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 07:54:33,789 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 07:54:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1683936119, now seen corresponding path program 1 times [2022-01-19 07:54:33,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:33,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256986980] [2022-01-19 07:54:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:33,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:54:33,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:33,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256986980] [2022-01-19 07:54:33,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256986980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:33,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909423606] [2022-01-19 07:54:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:33,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:33,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:33,938 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 07:54:33,939 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 07:54:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:34,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 07:54:34,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:34,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:54:34,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:54:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:54:35,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909423606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:54:35,435 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:54:35,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 23 [2022-01-19 07:54:35,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315572639] [2022-01-19 07:54:35,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:54:35,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 07:54:35,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 07:54:35,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-01-19 07:54:35,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 267 [2022-01-19 07:54:35,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 412 transitions, 2103 flow. Second operand has 23 states, 23 states have (on average 196.69565217391303) internal successors, (4524), 23 states have internal predecessors, (4524), 0 states have call successors, (0), 0 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 07:54:35,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:35,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 267 [2022-01-19 07:54:35,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:36,736 INFO L129 PetriNetUnfolder]: 1840/5514 cut-off events. [2022-01-19 07:54:36,736 INFO L130 PetriNetUnfolder]: For 24690/25105 co-relation queries the response was YES. [2022-01-19 07:54:36,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20811 conditions, 5514 events. 1840/5514 cut-off events. For 24690/25105 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 44770 event pairs, 492 based on Foata normal form. 77/5315 useless extension candidates. Maximal degree in co-relation 20764. Up to 1225 conditions per place. [2022-01-19 07:54:36,782 INFO L132 encePairwiseOnDemand]: 247/267 looper letters, 123 selfloop transitions, 54 changer transitions 110/525 dead transitions. [2022-01-19 07:54:36,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 525 transitions, 3572 flow [2022-01-19 07:54:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 07:54:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 07:54:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3945 transitions. [2022-01-19 07:54:36,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7387640449438202 [2022-01-19 07:54:36,787 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3945 transitions. [2022-01-19 07:54:36,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3945 transitions. [2022-01-19 07:54:36,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:36,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3945 transitions. [2022-01-19 07:54:36,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 197.25) internal successors, (3945), 20 states have internal predecessors, (3945), 0 states have call successors, (0), 0 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 07:54:36,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 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 07:54:36,798 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 267.0) internal successors, (5607), 21 states have internal predecessors, (5607), 0 states have call successors, (0), 0 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 07:54:36,798 INFO L186 Difference]: Start difference. First operand has 375 places, 412 transitions, 2103 flow. Second operand 20 states and 3945 transitions. [2022-01-19 07:54:36,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 525 transitions, 3572 flow [2022-01-19 07:54:36,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 525 transitions, 3435 flow, removed 5 selfloop flow, removed 15 redundant places. [2022-01-19 07:54:36,936 INFO L242 Difference]: Finished difference. Result has 382 places, 411 transitions, 2119 flow [2022-01-19 07:54:36,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1992, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2119, PETRI_PLACES=382, PETRI_TRANSITIONS=411} [2022-01-19 07:54:36,937 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 141 predicate places. [2022-01-19 07:54:36,937 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 411 transitions, 2119 flow [2022-01-19 07:54:36,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 196.69565217391303) internal successors, (4524), 23 states have internal predecessors, (4524), 0 states have call successors, (0), 0 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 07:54:36,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:36,939 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:36,965 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 07:54:37,151 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,SelfDestructingSolverStorable12 [2022-01-19 07:54:37,152 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 07:54:37,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash 270605113, now seen corresponding path program 2 times [2022-01-19 07:54:37,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:37,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403428150] [2022-01-19 07:54:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:37,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 07:54:37,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:37,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403428150] [2022-01-19 07:54:37,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403428150] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:37,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106679547] [2022-01-19 07:54:37,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:54:37,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:37,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:37,272 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 07:54:37,273 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 07:54:37,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:54:37,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:54:37,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 07:54:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:37,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 07:54:37,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 07:54:37,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106679547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 07:54:37,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 07:54:37,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-01-19 07:54:37,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793702657] [2022-01-19 07:54:37,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 07:54:37,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 07:54:37,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 07:54:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 07:54:37,746 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 267 [2022-01-19 07:54:37,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 411 transitions, 2119 flow. Second operand has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 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 07:54:37,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:37,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 267 [2022-01-19 07:54:37,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:38,501 INFO L129 PetriNetUnfolder]: 1502/4653 cut-off events. [2022-01-19 07:54:38,501 INFO L130 PetriNetUnfolder]: For 23242/23555 co-relation queries the response was YES. [2022-01-19 07:54:38,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16982 conditions, 4653 events. 1502/4653 cut-off events. For 23242/23555 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 36792 event pairs, 249 based on Foata normal form. 146/4496 useless extension candidates. Maximal degree in co-relation 16932. Up to 1030 conditions per place. [2022-01-19 07:54:38,542 INFO L132 encePairwiseOnDemand]: 263/267 looper letters, 74 selfloop transitions, 39 changer transitions 0/450 dead transitions. [2022-01-19 07:54:38,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 450 transitions, 2692 flow [2022-01-19 07:54:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 07:54:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 07:54:38,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 971 transitions. [2022-01-19 07:54:38,544 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9091760299625468 [2022-01-19 07:54:38,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 971 transitions. [2022-01-19 07:54:38,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 971 transitions. [2022-01-19 07:54:38,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:38,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 971 transitions. [2022-01-19 07:54:38,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 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 07:54:38,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 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 07:54:38,547 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 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 07:54:38,547 INFO L186 Difference]: Start difference. First operand has 382 places, 411 transitions, 2119 flow. Second operand 4 states and 971 transitions. [2022-01-19 07:54:38,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 450 transitions, 2692 flow [2022-01-19 07:54:38,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 450 transitions, 2598 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-01-19 07:54:38,578 INFO L242 Difference]: Finished difference. Result has 372 places, 428 transitions, 2420 flow [2022-01-19 07:54:38,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2420, PETRI_PLACES=372, PETRI_TRANSITIONS=428} [2022-01-19 07:54:38,578 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 131 predicate places. [2022-01-19 07:54:38,578 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 428 transitions, 2420 flow [2022-01-19 07:54:38,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 237.75) internal successors, (951), 4 states have internal predecessors, (951), 0 states have call successors, (0), 0 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 07:54:38,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:38,579 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:38,603 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 07:54:38,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:38,794 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 07:54:38,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:38,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2087212167, now seen corresponding path program 3 times [2022-01-19 07:54:38,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:38,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387938044] [2022-01-19 07:54:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:38,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:54:39,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:39,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387938044] [2022-01-19 07:54:39,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387938044] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:39,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196935215] [2022-01-19 07:54:39,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:54:39,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:39,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:39,516 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 07:54:39,530 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 07:54:39,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 07:54:39,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:54:39,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-19 07:54:39,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:41,086 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:54:41,086 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 44 treesize of output 32 [2022-01-19 07:54:41,176 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-19 07:54:41,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:54:41,737 INFO L353 Elim1Store]: treesize reduction 12, result has 89.0 percent of original size [2022-01-19 07:54:41,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 110 [2022-01-19 07:54:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 07:54:42,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196935215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:54:42,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:54:42,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12, 9] total 39 [2022-01-19 07:54:42,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943514814] [2022-01-19 07:54:42,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:54:42,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-19 07:54:42,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-19 07:54:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1375, Unknown=0, NotChecked=0, Total=1482 [2022-01-19 07:54:42,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2022-01-19 07:54:42,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 428 transitions, 2420 flow. Second operand has 39 states, 39 states have (on average 154.66666666666666) internal successors, (6032), 39 states have internal predecessors, (6032), 0 states have call successors, (0), 0 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 07:54:42,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:42,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2022-01-19 07:54:42,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:54:46,974 INFO L129 PetriNetUnfolder]: 7863/16725 cut-off events. [2022-01-19 07:54:46,975 INFO L130 PetriNetUnfolder]: For 119964/122349 co-relation queries the response was YES. [2022-01-19 07:54:47,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71724 conditions, 16725 events. 7863/16725 cut-off events. For 119964/122349 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 147542 event pairs, 1767 based on Foata normal form. 46/15175 useless extension candidates. Maximal degree in co-relation 71673. Up to 8091 conditions per place. [2022-01-19 07:54:47,157 INFO L132 encePairwiseOnDemand]: 206/267 looper letters, 355 selfloop transitions, 241 changer transitions 1/735 dead transitions. [2022-01-19 07:54:47,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 735 transitions, 6146 flow [2022-01-19 07:54:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-19 07:54:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-01-19 07:54:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10059 transitions. [2022-01-19 07:54:47,172 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5796024200518582 [2022-01-19 07:54:47,172 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10059 transitions. [2022-01-19 07:54:47,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10059 transitions. [2022-01-19 07:54:47,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:54:47,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10059 transitions. [2022-01-19 07:54:47,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 154.75384615384615) internal successors, (10059), 65 states have internal predecessors, (10059), 0 states have call successors, (0), 0 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 07:54:47,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 267.0) internal successors, (17622), 66 states have internal predecessors, (17622), 0 states have call successors, (0), 0 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 07:54:47,206 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 267.0) internal successors, (17622), 66 states have internal predecessors, (17622), 0 states have call successors, (0), 0 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 07:54:47,206 INFO L186 Difference]: Start difference. First operand has 372 places, 428 transitions, 2420 flow. Second operand 65 states and 10059 transitions. [2022-01-19 07:54:47,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 735 transitions, 6146 flow [2022-01-19 07:54:47,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 735 transitions, 5966 flow, removed 90 selfloop flow, removed 1 redundant places. [2022-01-19 07:54:47,317 INFO L242 Difference]: Finished difference. Result has 452 places, 568 transitions, 4473 flow [2022-01-19 07:54:47,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=4473, PETRI_PLACES=452, PETRI_TRANSITIONS=568} [2022-01-19 07:54:47,318 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 211 predicate places. [2022-01-19 07:54:47,318 INFO L470 AbstractCegarLoop]: Abstraction has has 452 places, 568 transitions, 4473 flow [2022-01-19 07:54:47,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 154.66666666666666) internal successors, (6032), 39 states have internal predecessors, (6032), 0 states have call successors, (0), 0 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 07:54:47,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:54:47,320 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:54:47,346 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 07:54:47,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:47,542 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 07:54:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:54:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash 439988631, now seen corresponding path program 4 times [2022-01-19 07:54:47,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:54:47,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449905172] [2022-01-19 07:54:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:54:47,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:54:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:54:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:54:48,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:54:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449905172] [2022-01-19 07:54:48,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449905172] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:54:48,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418946267] [2022-01-19 07:54:48,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 07:54:48,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:54:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:54:48,172 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 07:54:48,173 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 07:54:48,325 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 07:54:48,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:54:48,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-19 07:54:48,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:54:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:54:52,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:54:52,740 INFO L353 Elim1Store]: treesize reduction 46, result has 74.9 percent of original size [2022-01-19 07:54:52,740 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 59 treesize of output 154 [2022-01-19 07:54:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:54:54,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418946267] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:54:54,607 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:54:54,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 18] total 63 [2022-01-19 07:54:54,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773828941] [2022-01-19 07:54:54,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:54:54,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-19 07:54:54,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:54:54,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-19 07:54:54,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3509, Unknown=0, NotChecked=0, Total=3906 [2022-01-19 07:54:54,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2022-01-19 07:54:54,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 568 transitions, 4473 flow. Second operand has 63 states, 63 states have (on average 153.34920634920636) internal successors, (9661), 63 states have internal predecessors, (9661), 0 states have call successors, (0), 0 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 07:54:54,619 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:54:54,619 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2022-01-19 07:54:54,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:55:07,279 INFO L129 PetriNetUnfolder]: 14297/31399 cut-off events. [2022-01-19 07:55:07,279 INFO L130 PetriNetUnfolder]: For 303808/310084 co-relation queries the response was YES. [2022-01-19 07:55:07,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159095 conditions, 31399 events. 14297/31399 cut-off events. For 303808/310084 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 319645 event pairs, 1809 based on Foata normal form. 610/30014 useless extension candidates. Maximal degree in co-relation 159027. Up to 12972 conditions per place. [2022-01-19 07:55:07,667 INFO L132 encePairwiseOnDemand]: 211/267 looper letters, 809 selfloop transitions, 533 changer transitions 12/1493 dead transitions. [2022-01-19 07:55:07,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1493 transitions, 16541 flow [2022-01-19 07:55:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-19 07:55:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2022-01-19 07:55:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 18359 transitions. [2022-01-19 07:55:07,688 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5778176439114971 [2022-01-19 07:55:07,688 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 18359 transitions. [2022-01-19 07:55:07,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 18359 transitions. [2022-01-19 07:55:07,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:55:07,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 18359 transitions. [2022-01-19 07:55:07,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 154.27731092436974) internal successors, (18359), 119 states have internal predecessors, (18359), 0 states have call successors, (0), 0 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 07:55:07,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 267.0) internal successors, (32040), 120 states have internal predecessors, (32040), 0 states have call successors, (0), 0 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 07:55:07,750 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 267.0) internal successors, (32040), 120 states have internal predecessors, (32040), 0 states have call successors, (0), 0 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 07:55:07,751 INFO L186 Difference]: Start difference. First operand has 452 places, 568 transitions, 4473 flow. Second operand 119 states and 18359 transitions. [2022-01-19 07:55:07,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1493 transitions, 16541 flow [2022-01-19 07:55:08,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 1493 transitions, 15685 flow, removed 325 selfloop flow, removed 36 redundant places. [2022-01-19 07:55:08,742 INFO L242 Difference]: Finished difference. Result has 573 places, 1059 transitions, 10919 flow [2022-01-19 07:55:08,743 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=4152, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=119, PETRI_FLOW=10919, PETRI_PLACES=573, PETRI_TRANSITIONS=1059} [2022-01-19 07:55:08,743 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 332 predicate places. [2022-01-19 07:55:08,743 INFO L470 AbstractCegarLoop]: Abstraction has has 573 places, 1059 transitions, 10919 flow [2022-01-19 07:55:08,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 153.34920634920636) internal successors, (9661), 63 states have internal predecessors, (9661), 0 states have call successors, (0), 0 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 07:55:08,744 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:55:08,745 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:08,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-19 07:55:08,945 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,SelfDestructingSolverStorable15 [2022-01-19 07:55:08,946 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 07:55:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:55:08,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1521122959, now seen corresponding path program 5 times [2022-01-19 07:55:08,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:55:08,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203401578] [2022-01-19 07:55:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:55:08,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:55:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:55:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:55:09,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:55:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203401578] [2022-01-19 07:55:09,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203401578] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:55:09,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197928146] [2022-01-19 07:55:09,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 07:55:09,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:55:09,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:55:09,589 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 07:55:09,589 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 07:55:09,753 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-19 07:55:09,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:55:09,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-19 07:55:09,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:55:11,181 INFO L353 Elim1Store]: treesize reduction 24, result has 78.0 percent of original size [2022-01-19 07:55:11,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 99 [2022-01-19 07:55:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:55:11,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:55:12,045 INFO L353 Elim1Store]: treesize reduction 32, result has 82.1 percent of original size [2022-01-19 07:55:12,045 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 59 treesize of output 165 [2022-01-19 07:55:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:55:13,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197928146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:55:13,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:55:13,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 18] total 51 [2022-01-19 07:55:13,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138815090] [2022-01-19 07:55:13,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:55:13,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-19 07:55:13,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:55:13,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-19 07:55:13,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=2254, Unknown=0, NotChecked=0, Total=2550 [2022-01-19 07:55:13,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2022-01-19 07:55:13,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 1059 transitions, 10919 flow. Second operand has 51 states, 51 states have (on average 153.52941176470588) internal successors, (7830), 51 states have internal predecessors, (7830), 0 states have call successors, (0), 0 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 07:55:13,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:55:13,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2022-01-19 07:55:13,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:55:26,772 INFO L129 PetriNetUnfolder]: 17378/38071 cut-off events. [2022-01-19 07:55:26,772 INFO L130 PetriNetUnfolder]: For 594073/606233 co-relation queries the response was YES. [2022-01-19 07:55:27,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 230265 conditions, 38071 events. 17378/38071 cut-off events. For 594073/606233 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 396618 event pairs, 2017 based on Foata normal form. 1019/36849 useless extension candidates. Maximal degree in co-relation 230159. Up to 19845 conditions per place. [2022-01-19 07:55:27,403 INFO L132 encePairwiseOnDemand]: 210/267 looper letters, 975 selfloop transitions, 679 changer transitions 7/1801 dead transitions. [2022-01-19 07:55:27,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1801 transitions, 23614 flow [2022-01-19 07:55:27,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-19 07:55:27,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-01-19 07:55:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 8831 transitions. [2022-01-19 07:55:27,412 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5802615152112491 [2022-01-19 07:55:27,413 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 8831 transitions. [2022-01-19 07:55:27,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 8831 transitions. [2022-01-19 07:55:27,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:55:27,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 8831 transitions. [2022-01-19 07:55:27,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 154.9298245614035) internal successors, (8831), 57 states have internal predecessors, (8831), 0 states have call successors, (0), 0 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 07:55:27,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 267.0) internal successors, (15486), 58 states have internal predecessors, (15486), 0 states have call successors, (0), 0 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 07:55:27,434 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 267.0) internal successors, (15486), 58 states have internal predecessors, (15486), 0 states have call successors, (0), 0 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 07:55:27,434 INFO L186 Difference]: Start difference. First operand has 573 places, 1059 transitions, 10919 flow. Second operand 57 states and 8831 transitions. [2022-01-19 07:55:27,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1801 transitions, 23614 flow [2022-01-19 07:55:29,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 1801 transitions, 22194 flow, removed 645 selfloop flow, removed 26 redundant places. [2022-01-19 07:55:29,770 INFO L242 Difference]: Finished difference. Result has 621 places, 1557 transitions, 19656 flow [2022-01-19 07:55:29,771 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=10141, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=19656, PETRI_PLACES=621, PETRI_TRANSITIONS=1557} [2022-01-19 07:55:29,772 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 380 predicate places. [2022-01-19 07:55:29,772 INFO L470 AbstractCegarLoop]: Abstraction has has 621 places, 1557 transitions, 19656 flow [2022-01-19 07:55:29,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 153.52941176470588) internal successors, (7830), 51 states have internal predecessors, (7830), 0 states have call successors, (0), 0 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 07:55:29,773 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:55:29,773 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:55:29,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 07:55:29,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-19 07:55:29,987 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 07:55:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:55:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2103761005, now seen corresponding path program 6 times [2022-01-19 07:55:29,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:55:29,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329155650] [2022-01-19 07:55:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:55:29,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:55:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:55:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:55:30,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:55:30,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329155650] [2022-01-19 07:55:30,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329155650] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:55:30,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991272168] [2022-01-19 07:55:30,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 07:55:30,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:55:30,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:55:30,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:55:30,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 07:55:30,674 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-19 07:55:30,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:55:30,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-19 07:55:30,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:55:35,870 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:55:35,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:55:36,565 INFO L353 Elim1Store]: treesize reduction 44, result has 75.4 percent of original size [2022-01-19 07:55:36,565 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 58 treesize of output 152 [2022-01-19 07:55:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:55:38,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991272168] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:55:38,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:55:38,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31, 26] total 75 [2022-01-19 07:55:38,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478428243] [2022-01-19 07:55:38,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:55:38,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-19 07:55:38,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:55:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-19 07:55:38,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=4946, Unknown=1, NotChecked=0, Total=5550 [2022-01-19 07:55:38,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2022-01-19 07:55:38,628 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1557 transitions, 19656 flow. Second operand has 75 states, 75 states have (on average 152.93333333333334) internal successors, (11470), 75 states have internal predecessors, (11470), 0 states have call successors, (0), 0 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 07:55:38,628 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:55:38,628 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2022-01-19 07:55:38,628 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:55:58,887 INFO L129 PetriNetUnfolder]: 18879/41495 cut-off events. [2022-01-19 07:55:58,887 INFO L130 PetriNetUnfolder]: For 811262/827630 co-relation queries the response was YES. [2022-01-19 07:55:59,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277013 conditions, 41495 events. 18879/41495 cut-off events. For 811262/827630 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 440377 event pairs, 2457 based on Foata normal form. 1085/40071 useless extension candidates. Maximal degree in co-relation 276892. Up to 25887 conditions per place. [2022-01-19 07:55:59,946 INFO L132 encePairwiseOnDemand]: 210/267 looper letters, 1383 selfloop transitions, 847 changer transitions 7/2376 dead transitions. [2022-01-19 07:55:59,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 2376 transitions, 35010 flow [2022-01-19 07:55:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-19 07:55:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-01-19 07:55:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 17089 transitions. [2022-01-19 07:55:59,965 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5766103181833518 [2022-01-19 07:55:59,965 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 17089 transitions. [2022-01-19 07:55:59,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 17089 transitions. [2022-01-19 07:55:59,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:55:59,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 17089 transitions. [2022-01-19 07:55:59,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 153.95495495495496) internal successors, (17089), 111 states have internal predecessors, (17089), 0 states have call successors, (0), 0 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 07:56:00,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 267.0) internal successors, (29904), 112 states have internal predecessors, (29904), 0 states have call successors, (0), 0 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 07:56:00,022 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 267.0) internal successors, (29904), 112 states have internal predecessors, (29904), 0 states have call successors, (0), 0 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 07:56:00,022 INFO L186 Difference]: Start difference. First operand has 621 places, 1557 transitions, 19656 flow. Second operand 111 states and 17089 transitions. [2022-01-19 07:56:00,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 2376 transitions, 35010 flow [2022-01-19 07:56:05,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 2376 transitions, 32972 flow, removed 921 selfloop flow, removed 35 redundant places. [2022-01-19 07:56:05,892 INFO L242 Difference]: Finished difference. Result has 722 places, 2088 transitions, 29155 flow [2022-01-19 07:56:05,893 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=18437, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=958, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=29155, PETRI_PLACES=722, PETRI_TRANSITIONS=2088} [2022-01-19 07:56:05,893 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 481 predicate places. [2022-01-19 07:56:05,893 INFO L470 AbstractCegarLoop]: Abstraction has has 722 places, 2088 transitions, 29155 flow [2022-01-19 07:56:05,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 152.93333333333334) internal successors, (11470), 75 states have internal predecessors, (11470), 0 states have call successors, (0), 0 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 07:56:05,895 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:56:05,895 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:05,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 07:56:06,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 07:56:06,096 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 07:56:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:56:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1856189313, now seen corresponding path program 7 times [2022-01-19 07:56:06,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:56:06,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623994803] [2022-01-19 07:56:06,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:56:06,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:56:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:56:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 07:56:06,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:56:06,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623994803] [2022-01-19 07:56:06,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623994803] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:56:06,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249782986] [2022-01-19 07:56:06,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 07:56:06,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:56:06,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:56:06,244 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:56:06,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 07:56:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:56:06,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-19 07:56:06,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:56:08,646 INFO L353 Elim1Store]: treesize reduction 34, result has 42.4 percent of original size [2022-01-19 07:56:08,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 36 [2022-01-19 07:56:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:56:08,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:56:09,161 INFO L353 Elim1Store]: treesize reduction 12, result has 89.0 percent of original size [2022-01-19 07:56:09,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 110 [2022-01-19 07:56:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:56:10,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249782986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:56:10,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:56:10,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 30, 18] total 51 [2022-01-19 07:56:10,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468202823] [2022-01-19 07:56:10,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:56:10,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-19 07:56:10,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:56:10,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-19 07:56:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2260, Unknown=0, NotChecked=0, Total=2550 [2022-01-19 07:56:10,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 267 [2022-01-19 07:56:10,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 2088 transitions, 29155 flow. Second operand has 51 states, 51 states have (on average 137.62745098039215) internal successors, (7019), 51 states have internal predecessors, (7019), 0 states have call successors, (0), 0 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 07:56:10,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:56:10,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 267 [2022-01-19 07:56:10,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:56:35,426 INFO L129 PetriNetUnfolder]: 23714/51202 cut-off events. [2022-01-19 07:56:35,426 INFO L130 PetriNetUnfolder]: For 1224362/1253485 co-relation queries the response was YES. [2022-01-19 07:56:37,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 366485 conditions, 51202 events. 23714/51202 cut-off events. For 1224362/1253485 co-relation queries the response was YES. Maximal size of possible extension queue 2040. Compared 551735 event pairs, 2466 based on Foata normal form. 2230/50593 useless extension candidates. Maximal degree in co-relation 366338. Up to 30784 conditions per place. [2022-01-19 07:56:37,440 INFO L132 encePairwiseOnDemand]: 215/267 looper letters, 2180 selfloop transitions, 936 changer transitions 3/3260 dead transitions. [2022-01-19 07:56:37,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 3260 transitions, 52222 flow [2022-01-19 07:56:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-19 07:56:37,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-01-19 07:56:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 10753 transitions. [2022-01-19 07:56:37,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5163257466628253 [2022-01-19 07:56:37,451 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 10753 transitions. [2022-01-19 07:56:37,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 10753 transitions. [2022-01-19 07:56:37,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:56:37,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 10753 transitions. [2022-01-19 07:56:37,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 137.85897435897436) internal successors, (10753), 78 states have internal predecessors, (10753), 0 states have call successors, (0), 0 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 07:56:37,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 267.0) internal successors, (21093), 79 states have internal predecessors, (21093), 0 states have call successors, (0), 0 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 07:56:37,482 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 267.0) internal successors, (21093), 79 states have internal predecessors, (21093), 0 states have call successors, (0), 0 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 07:56:37,482 INFO L186 Difference]: Start difference. First operand has 722 places, 2088 transitions, 29155 flow. Second operand 78 states and 10753 transitions. [2022-01-19 07:56:37,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 3260 transitions, 52222 flow [2022-01-19 07:56:49,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 3260 transitions, 49931 flow, removed 1030 selfloop flow, removed 73 redundant places. [2022-01-19 07:56:49,782 INFO L242 Difference]: Finished difference. Result has 746 places, 2826 transitions, 42621 flow [2022-01-19 07:56:49,784 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=27736, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=42621, PETRI_PLACES=746, PETRI_TRANSITIONS=2826} [2022-01-19 07:56:49,784 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 505 predicate places. [2022-01-19 07:56:49,784 INFO L470 AbstractCegarLoop]: Abstraction has has 746 places, 2826 transitions, 42621 flow [2022-01-19 07:56:49,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 137.62745098039215) internal successors, (7019), 51 states have internal predecessors, (7019), 0 states have call successors, (0), 0 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 07:56:49,785 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:56:49,786 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:49,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 07:56:49,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:56:49,991 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 07:56:49,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:56:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1953031935, now seen corresponding path program 8 times [2022-01-19 07:56:49,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:56:49,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514770607] [2022-01-19 07:56:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:56:49,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:56:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:56:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:56:51,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:56:51,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514770607] [2022-01-19 07:56:51,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514770607] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:56:51,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038050103] [2022-01-19 07:56:51,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 07:56:51,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:56:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:56:51,128 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:56:51,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 07:56:51,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 07:56:51,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:56:51,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-19 07:56:51,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:56:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:56:53,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:56:54,536 INFO L353 Elim1Store]: treesize reduction 46, result has 74.9 percent of original size [2022-01-19 07:56:54,536 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 59 treesize of output 154 [2022-01-19 07:56:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:56:55,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038050103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:56:55,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:56:55,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 26, 18] total 77 [2022-01-19 07:56:55,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995468629] [2022-01-19 07:56:55,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:56:55,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-19 07:56:55,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:56:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-19 07:56:55,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=5363, Unknown=0, NotChecked=0, Total=5852 [2022-01-19 07:56:55,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 267 [2022-01-19 07:56:55,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 2826 transitions, 42621 flow. Second operand has 77 states, 77 states have (on average 151.83116883116884) internal successors, (11691), 77 states have internal predecessors, (11691), 0 states have call successors, (0), 0 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 07:56:55,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:56:55,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 267 [2022-01-19 07:56:55,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:57:38,974 INFO L129 PetriNetUnfolder]: 29029/62475 cut-off events. [2022-01-19 07:57:38,974 INFO L130 PetriNetUnfolder]: For 1795323/1848380 co-relation queries the response was YES. [2022-01-19 07:57:41,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 488582 conditions, 62475 events. 29029/62475 cut-off events. For 1795323/1848380 co-relation queries the response was YES. Maximal size of possible extension queue 2566. Compared 695198 event pairs, 2356 based on Foata normal form. 4951/64316 useless extension candidates. Maximal degree in co-relation 488416. Up to 31496 conditions per place. [2022-01-19 07:57:41,645 INFO L132 encePairwiseOnDemand]: 202/267 looper letters, 2468 selfloop transitions, 2119 changer transitions 4/4728 dead transitions. [2022-01-19 07:57:41,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 898 places, 4728 transitions, 84341 flow [2022-01-19 07:57:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-19 07:57:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2022-01-19 07:57:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 23433 transitions. [2022-01-19 07:57:41,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5736212087831387 [2022-01-19 07:57:41,663 INFO L72 ComplementDD]: Start complementDD. Operand 153 states and 23433 transitions. [2022-01-19 07:57:41,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 23433 transitions. [2022-01-19 07:57:41,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:57:41,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 153 states and 23433 transitions. [2022-01-19 07:57:41,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 154 states, 153 states have (on average 153.15686274509804) internal successors, (23433), 153 states have internal predecessors, (23433), 0 states have call successors, (0), 0 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 07:57:41,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 154 states, 154 states have (on average 267.0) internal successors, (41118), 154 states have internal predecessors, (41118), 0 states have call successors, (0), 0 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 07:57:41,727 INFO L81 ComplementDD]: Finished complementDD. Result has 154 states, 154 states have (on average 267.0) internal successors, (41118), 154 states have internal predecessors, (41118), 0 states have call successors, (0), 0 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 07:57:41,728 INFO L186 Difference]: Start difference. First operand has 746 places, 2826 transitions, 42621 flow. Second operand 153 states and 23433 transitions. [2022-01-19 07:57:41,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 898 places, 4728 transitions, 84341 flow [2022-01-19 07:58:08,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 4728 transitions, 82171 flow, removed 1003 selfloop flow, removed 55 redundant places. [2022-01-19 07:58:08,682 INFO L242 Difference]: Finished difference. Result has 898 places, 4196 transitions, 74681 flow [2022-01-19 07:58:08,684 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=41161, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=960, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=153, PETRI_FLOW=74681, PETRI_PLACES=898, PETRI_TRANSITIONS=4196} [2022-01-19 07:58:08,685 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 657 predicate places. [2022-01-19 07:58:08,685 INFO L470 AbstractCegarLoop]: Abstraction has has 898 places, 4196 transitions, 74681 flow [2022-01-19 07:58:08,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 151.83116883116884) internal successors, (11691), 77 states have internal predecessors, (11691), 0 states have call successors, (0), 0 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 07:58:08,686 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 07:58:08,687 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:58:08,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 07:58:08,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:58:08,903 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 07:58:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 07:58:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -784205407, now seen corresponding path program 9 times [2022-01-19 07:58:08,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 07:58:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574385848] [2022-01-19 07:58:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 07:58:08,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 07:58:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 07:58:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 07:58:10,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 07:58:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574385848] [2022-01-19 07:58:10,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574385848] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 07:58:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115397385] [2022-01-19 07:58:10,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 07:58:10,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 07:58:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 07:58:10,047 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 07:58:10,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 07:58:10,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 07:58:10,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 07:58:10,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-19 07:58:10,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 07:58:11,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 07:58:11,290 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 44 treesize of output 32 [2022-01-19 07:58:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 07:58:11,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 07:58:12,324 INFO L353 Elim1Store]: treesize reduction 12, result has 89.0 percent of original size [2022-01-19 07:58:12,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 110 [2022-01-19 07:58:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 07:58:13,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115397385] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 07:58:13,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 07:58:13,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 23, 9] total 55 [2022-01-19 07:58:13,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938332659] [2022-01-19 07:58:13,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 07:58:13,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-19 07:58:13,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 07:58:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-19 07:58:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2780, Unknown=0, NotChecked=0, Total=2970 [2022-01-19 07:58:13,087 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 267 [2022-01-19 07:58:13,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 4196 transitions, 74681 flow. Second operand has 55 states, 55 states have (on average 152.83636363636364) internal successors, (8406), 55 states have internal predecessors, (8406), 0 states have call successors, (0), 0 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 07:58:13,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 07:58:13,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 267 [2022-01-19 07:58:13,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 07:59:39,574 INFO L129 PetriNetUnfolder]: 42956/92278 cut-off events. [2022-01-19 07:59:39,575 INFO L130 PetriNetUnfolder]: For 5369898/5485285 co-relation queries the response was YES. [2022-01-19 07:59:44,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 889495 conditions, 92278 events. 42956/92278 cut-off events. For 5369898/5485285 co-relation queries the response was YES. Maximal size of possible extension queue 3751. Compared 1084771 event pairs, 3214 based on Foata normal form. 9953/97769 useless extension candidates. Maximal degree in co-relation 889277. Up to 26340 conditions per place. [2022-01-19 07:59:45,454 INFO L132 encePairwiseOnDemand]: 204/267 looper letters, 4222 selfloop transitions, 2566 changer transitions 2/6927 dead transitions. [2022-01-19 07:59:45,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1016 places, 6927 transitions, 147434 flow [2022-01-19 07:59:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-19 07:59:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2022-01-19 07:59:45,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 18395 transitions. [2022-01-19 07:59:45,463 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5741260923845194 [2022-01-19 07:59:45,463 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 18395 transitions. [2022-01-19 07:59:45,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 18395 transitions. [2022-01-19 07:59:45,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 07:59:45,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 18395 transitions. [2022-01-19 07:59:45,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 153.29166666666666) internal successors, (18395), 120 states have internal predecessors, (18395), 0 states have call successors, (0), 0 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 07:59:45,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 267.0) internal successors, (32307), 121 states have internal predecessors, (32307), 0 states have call successors, (0), 0 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 07:59:45,513 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 267.0) internal successors, (32307), 121 states have internal predecessors, (32307), 0 states have call successors, (0), 0 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 07:59:45,513 INFO L186 Difference]: Start difference. First operand has 898 places, 4196 transitions, 74681 flow. Second operand 120 states and 18395 transitions. [2022-01-19 07:59:45,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1016 places, 6927 transitions, 147434 flow [2022-01-19 08:01:32,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 938 places, 6927 transitions, 138303 flow, removed 4397 selfloop flow, removed 78 redundant places. [2022-01-19 08:01:32,521 INFO L242 Difference]: Finished difference. Result has 963 places, 5409 transitions, 106191 flow [2022-01-19 08:01:32,524 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=66131, PETRI_DIFFERENCE_MINUEND_PLACES=819, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=106191, PETRI_PLACES=963, PETRI_TRANSITIONS=5409} [2022-01-19 08:01:32,525 INFO L334 CegarLoopForPetriNet]: 241 programPoint places, 722 predicate places. [2022-01-19 08:01:32,525 INFO L470 AbstractCegarLoop]: Abstraction has has 963 places, 5409 transitions, 106191 flow [2022-01-19 08:01:32,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 152.83636363636364) internal successors, (8406), 55 states have internal predecessors, (8406), 0 states have call successors, (0), 0 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 08:01:32,527 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:01:32,527 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:32,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-19 08:01:32,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-19 08:01:32,752 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 08:01:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:01:32,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2143975289, now seen corresponding path program 10 times [2022-01-19 08:01:32,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:01:32,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668619426] [2022-01-19 08:01:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:01:32,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:01:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:01:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 08:01:33,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:01:33,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668619426] [2022-01-19 08:01:33,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668619426] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 08:01:33,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936472300] [2022-01-19 08:01:33,310 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 08:01:33,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:01:33,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:01:33,311 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 08:01:33,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-19 08:01:33,474 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 08:01:33,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 08:01:33,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-19 08:01:33,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 08:01:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 08:01:37,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 08:01:38,430 INFO L353 Elim1Store]: treesize reduction 12, result has 89.0 percent of original size [2022-01-19 08:01:38,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 110 [2022-01-19 08:01:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-19 08:01:39,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936472300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 08:01:39,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 08:01:39,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 18] total 63 [2022-01-19 08:01:39,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592720786] [2022-01-19 08:01:39,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 08:01:39,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-19 08:01:39,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:01:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-19 08:01:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=3509, Unknown=1, NotChecked=0, Total=3906 [2022-01-19 08:01:39,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 267 [2022-01-19 08:01:39,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 963 places, 5409 transitions, 106191 flow. Second operand has 63 states, 63 states have (on average 153.34920634920636) internal successors, (9661), 63 states have internal predecessors, (9661), 0 states have call successors, (0), 0 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 08:01:39,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:01:39,957 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 267 [2022-01-19 08:01:39,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand