./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/triangular-longer-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-1.i ./goblint.2024-06-19_11-23-25.files/protection/triangular-longer-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:47:18,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:47:18,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:47:18,310 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:47:18,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:47:18,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:47:18,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:47:18,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:47:18,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:47:18,346 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:47:18,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:47:18,346 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:47:18,347 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:47:18,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:47:18,349 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:47:18,349 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:47:18,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:47:18,350 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:47:18,350 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:47:18,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:47:18,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:47:18,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:47:18,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:47:18,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:47:18,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:47:18,352 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:47:18,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:47:18,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:47:18,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:47:18,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:47:18,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:47:18,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:47:18,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:47:18,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:47:18,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:47:18,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:47:18,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:47:18,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:47:18,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:47:18,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:47:18,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:47:18,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:47:18,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:47:18,358 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 17:47:18,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:47:18,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:47:18,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:47:18,593 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:47:18,594 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:47:18,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2024-06-27 17:47:19,734 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:47:19,998 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:47:19,999 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2024-06-27 17:47:20,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad30a245/5fd5c45babff438a86011fd25e497be2/FLAGdf7207785 [2024-06-27 17:47:20,029 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad30a245/5fd5c45babff438a86011fd25e497be2 [2024-06-27 17:47:20,031 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 17:47:20,031 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 17:47:20,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/triangular-longer-1.yml/witness.yml [2024-06-27 17:47:20,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:47:20,123 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 17:47:20,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:47:20,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:47:20,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:47:20,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:47:20" (1/2) ... [2024-06-27 17:47:20,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c76559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:47:20, skipping insertion in model container [2024-06-27 17:47:20,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:47:20" (1/2) ... [2024-06-27 17:47:20,134 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f4133ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:47:20, skipping insertion in model container [2024-06-27 17:47:20,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:47:20" (2/2) ... [2024-06-27 17:47:20,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c76559 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20, skipping insertion in model container [2024-06-27 17:47:20,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:47:20" (2/2) ... [2024-06-27 17:47:20,136 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 17:47:20,165 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 17:47:20,166 INFO L97 edCorrectnessWitness]: Location invariant before [L715-L715] (! multithreaded || (4 <= j && j % 2 == 0)) && (! multithreaded || (3 <= i && i % 2 == 1)) [2024-06-27 17:47:20,166 INFO L97 edCorrectnessWitness]: Location invariant before [L714-L714] (! multithreaded || (4 <= j && j % 2 == 0)) && (! multithreaded || (3 <= i && i % 2 == 1)) [2024-06-27 17:47:20,167 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 17:47:20,167 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] multithreaded = 1; [2024-06-27 17:47:20,211 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:47:20,550 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2024-06-27 17:47:20,555 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:47:20,563 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 17:47:20,632 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i[30961,30974] [2024-06-27 17:47:20,633 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:47:20,676 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:47:20,676 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20 WrapperNode [2024-06-27 17:47:20,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:47:20,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:47:20,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:47:20,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:47:20,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,712 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,735 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-06-27 17:47:20,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:47:20,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:47:20,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:47:20,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:47:20,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,755 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,767 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:47:20,768 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:47:20,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:47:20,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:47:20,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:47:20,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (1/1) ... [2024-06-27 17:47:20,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:47:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:20,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 17:47:20,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 17:47:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 17:47:20,832 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 17:47:20,832 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 17:47:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 17:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:47:20,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:47:20,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:47:20,834 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:47:20,940 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:47:20,955 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:47:21,082 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:47:21,083 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:47:21,159 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:47:21,159 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 17:47:21,160 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:47:21 BoogieIcfgContainer [2024-06-27 17:47:21,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:47:21,162 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:47:21,162 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:47:21,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:47:21,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:47:20" (1/4) ... [2024-06-27 17:47:21,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134410be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:47:21, skipping insertion in model container [2024-06-27 17:47:21,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:47:20" (2/4) ... [2024-06-27 17:47:21,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134410be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 05:47:21, skipping insertion in model container [2024-06-27 17:47:21,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:47:20" (3/4) ... [2024-06-27 17:47:21,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134410be and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 05:47:21, skipping insertion in model container [2024-06-27 17:47:21,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:47:21" (4/4) ... [2024-06-27 17:47:21,168 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2024-06-27 17:47:21,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:47:21,183 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 17:47:21,183 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:47:21,221 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:47:21,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2024-06-27 17:47:21,283 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-06-27 17:47:21,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:47:21,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-06-27 17:47:21,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2024-06-27 17:47:21,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2024-06-27 17:47:21,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:47:21,311 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@635ee8a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:47:21,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 17:47:21,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:47:21,317 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:47:21,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:47:21,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:21,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 17:47:21,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:21,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:21,324 INFO L85 PathProgramCache]: Analyzing trace with hash 176651994, now seen corresponding path program 1 times [2024-06-27 17:47:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:21,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346947610] [2024-06-27 17:47:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:22,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346947610] [2024-06-27 17:47:22,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346947610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:22,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:22,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:47:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434791076] [2024-06-27 17:47:22,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:22,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:47:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:47:22,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:47:22,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 17:47:22,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:22,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:22,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 17:47:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:22,207 INFO L124 PetriNetUnfolderBase]: 172/337 cut-off events. [2024-06-27 17:47:22,207 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 17:47:22,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 337 events. 172/337 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1436 event pairs, 45 based on Foata normal form. 20/331 useless extension candidates. Maximal degree in co-relation 625. Up to 211 conditions per place. [2024-06-27 17:47:22,213 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 23 selfloop transitions, 3 changer transitions 2/37 dead transitions. [2024-06-27 17:47:22,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 139 flow [2024-06-27 17:47:22,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:47:22,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:47:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-06-27 17:47:22,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7471264367816092 [2024-06-27 17:47:22,225 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 3 states and 65 transitions. [2024-06-27 17:47:22,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 139 flow [2024-06-27 17:47:22,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:47:22,229 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 75 flow [2024-06-27 17:47:22,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-06-27 17:47:22,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 17:47:22,234 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 75 flow [2024-06-27 17:47:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:22,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:22,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:22,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:47:22,235 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:22,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:22,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1314428841, now seen corresponding path program 1 times [2024-06-27 17:47:22,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:22,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353542215] [2024-06-27 17:47:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:22,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:22,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353542215] [2024-06-27 17:47:22,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353542215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:22,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:22,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:47:22,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509716442] [2024-06-27 17:47:22,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:47:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:22,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:47:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:47:22,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-06-27 17:47:22,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:22,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:22,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-06-27 17:47:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:22,778 INFO L124 PetriNetUnfolderBase]: 160/331 cut-off events. [2024-06-27 17:47:22,778 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-27 17:47:22,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 331 events. 160/331 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1438 event pairs, 37 based on Foata normal form. 21/342 useless extension candidates. Maximal degree in co-relation 697. Up to 109 conditions per place. [2024-06-27 17:47:22,784 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-06-27 17:47:22,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 199 flow [2024-06-27 17:47:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:47:22,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:47:22,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-06-27 17:47:22,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6620689655172414 [2024-06-27 17:47:22,789 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 75 flow. Second operand 5 states and 96 transitions. [2024-06-27 17:47:22,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 199 flow [2024-06-27 17:47:22,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:47:22,795 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 98 flow [2024-06-27 17:47:22,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-27 17:47:22,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 17:47:22,797 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 98 flow [2024-06-27 17:47:22,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:22,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:22,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:22,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:47:22,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:22,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:22,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1917013662, now seen corresponding path program 1 times [2024-06-27 17:47:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:22,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877025847] [2024-06-27 17:47:22,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:22,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:23,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:23,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877025847] [2024-06-27 17:47:23,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877025847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:23,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:23,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:47:23,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610464334] [2024-06-27 17:47:23,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:23,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:47:23,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:47:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:47:23,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:23,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:23,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:23,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:23,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:23,202 INFO L124 PetriNetUnfolderBase]: 244/502 cut-off events. [2024-06-27 17:47:23,203 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-06-27 17:47:23,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 502 events. 244/502 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2451 event pairs, 88 based on Foata normal form. 18/504 useless extension candidates. Maximal degree in co-relation 1117. Up to 255 conditions per place. [2024-06-27 17:47:23,207 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 27 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-06-27 17:47:23,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 184 flow [2024-06-27 17:47:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:47:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:47:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-27 17:47:23,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2024-06-27 17:47:23,211 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 98 flow. Second operand 5 states and 74 transitions. [2024-06-27 17:47:23,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 184 flow [2024-06-27 17:47:23,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:47:23,215 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 103 flow [2024-06-27 17:47:23,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-06-27 17:47:23,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-06-27 17:47:23,217 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 103 flow [2024-06-27 17:47:23,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:23,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:23,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:23,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:47:23,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:23,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash 344931938, now seen corresponding path program 1 times [2024-06-27 17:47:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251618616] [2024-06-27 17:47:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251618616] [2024-06-27 17:47:23,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251618616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:23,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:23,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:47:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545255999] [2024-06-27 17:47:23,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:23,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:47:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:47:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:47:23,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:23,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:23,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:23,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:23,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:23,543 INFO L124 PetriNetUnfolderBase]: 595/1023 cut-off events. [2024-06-27 17:47:23,544 INFO L125 PetriNetUnfolderBase]: For 918/918 co-relation queries the response was YES. [2024-06-27 17:47:23,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2549 conditions, 1023 events. 595/1023 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4733 event pairs, 178 based on Foata normal form. 0/980 useless extension candidates. Maximal degree in co-relation 2532. Up to 544 conditions per place. [2024-06-27 17:47:23,549 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 34 selfloop transitions, 7 changer transitions 31/77 dead transitions. [2024-06-27 17:47:23,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 77 transitions, 416 flow [2024-06-27 17:47:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:47:23,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:47:23,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 17:47:23,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6077586206896551 [2024-06-27 17:47:23,554 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 103 flow. Second operand 8 states and 141 transitions. [2024-06-27 17:47:23,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 77 transitions, 416 flow [2024-06-27 17:47:23,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 77 transitions, 409 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 17:47:23,558 INFO L231 Difference]: Finished difference. Result has 48 places, 31 transitions, 158 flow [2024-06-27 17:47:23,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=158, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2024-06-27 17:47:23,560 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-27 17:47:23,560 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 158 flow [2024-06-27 17:47:23,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:23,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:23,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:23,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:47:23,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:23,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash 654878447, now seen corresponding path program 1 times [2024-06-27 17:47:23,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:23,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553283176] [2024-06-27 17:47:23,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:23,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553283176] [2024-06-27 17:47:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553283176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:47:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423420239] [2024-06-27 17:47:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:23,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:47:23,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:47:23,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:47:23,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:23,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:23,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:23,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:23,872 INFO L124 PetriNetUnfolderBase]: 397/721 cut-off events. [2024-06-27 17:47:23,873 INFO L125 PetriNetUnfolderBase]: For 1105/1105 co-relation queries the response was YES. [2024-06-27 17:47:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 721 events. 397/721 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3147 event pairs, 151 based on Foata normal form. 27/735 useless extension candidates. Maximal degree in co-relation 2041. Up to 400 conditions per place. [2024-06-27 17:47:23,879 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 30 selfloop transitions, 8 changer transitions 16/59 dead transitions. [2024-06-27 17:47:23,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 380 flow [2024-06-27 17:47:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:47:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:47:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-27 17:47:23,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804597701149425 [2024-06-27 17:47:23,881 INFO L175 Difference]: Start difference. First operand has 48 places, 31 transitions, 158 flow. Second operand 6 states and 101 transitions. [2024-06-27 17:47:23,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 380 flow [2024-06-27 17:47:23,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 360 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 17:47:23,886 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 190 flow [2024-06-27 17:47:23,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-06-27 17:47:23,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-27 17:47:23,887 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 190 flow [2024-06-27 17:47:23,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:23,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:23,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:23,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:47:23,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:23,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:23,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1435421146, now seen corresponding path program 1 times [2024-06-27 17:47:23,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:23,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074281658] [2024-06-27 17:47:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:23,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:23,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:23,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074281658] [2024-06-27 17:47:23,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074281658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:23,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:23,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:47:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986537856] [2024-06-27 17:47:23,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:23,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:47:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:23,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:47:23,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:47:24,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:24,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:24,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:24,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:24,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:24,192 INFO L124 PetriNetUnfolderBase]: 379/682 cut-off events. [2024-06-27 17:47:24,193 INFO L125 PetriNetUnfolderBase]: For 1190/1190 co-relation queries the response was YES. [2024-06-27 17:47:24,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 682 events. 379/682 cut-off events. For 1190/1190 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2864 event pairs, 115 based on Foata normal form. 27/702 useless extension candidates. Maximal degree in co-relation 2038. Up to 364 conditions per place. [2024-06-27 17:47:24,198 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 39 selfloop transitions, 9 changer transitions 24/77 dead transitions. [2024-06-27 17:47:24,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 492 flow [2024-06-27 17:47:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 17:47:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 17:47:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 17:47:24,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2024-06-27 17:47:24,200 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 190 flow. Second operand 8 states and 137 transitions. [2024-06-27 17:47:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 492 flow [2024-06-27 17:47:24,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 465 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 17:47:24,206 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 233 flow [2024-06-27 17:47:24,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=233, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-06-27 17:47:24,206 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-27 17:47:24,207 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 233 flow [2024-06-27 17:47:24,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:24,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:24,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:24,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:47:24,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:24,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:24,208 INFO L85 PathProgramCache]: Analyzing trace with hash 259230455, now seen corresponding path program 1 times [2024-06-27 17:47:24,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:24,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961378285] [2024-06-27 17:47:24,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:24,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:24,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961378285] [2024-06-27 17:47:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961378285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:24,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:24,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:47:24,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69172142] [2024-06-27 17:47:24,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:24,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:47:24,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:47:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:47:24,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:24,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:24,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:24,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:24,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:24,572 INFO L124 PetriNetUnfolderBase]: 352/644 cut-off events. [2024-06-27 17:47:24,573 INFO L125 PetriNetUnfolderBase]: For 1650/1650 co-relation queries the response was YES. [2024-06-27 17:47:24,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091 conditions, 644 events. 352/644 cut-off events. For 1650/1650 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2592 event pairs, 70 based on Foata normal form. 27/658 useless extension candidates. Maximal degree in co-relation 2063. Up to 145 conditions per place. [2024-06-27 17:47:24,578 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 39 selfloop transitions, 16 changer transitions 28/88 dead transitions. [2024-06-27 17:47:24,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 88 transitions, 609 flow [2024-06-27 17:47:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:47:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:47:24,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 17:47:24,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2024-06-27 17:47:24,580 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 233 flow. Second operand 10 states and 166 transitions. [2024-06-27 17:47:24,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 88 transitions, 609 flow [2024-06-27 17:47:24,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 594 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 17:47:24,585 INFO L231 Difference]: Finished difference. Result has 64 places, 39 transitions, 309 flow [2024-06-27 17:47:24,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=309, PETRI_PLACES=64, PETRI_TRANSITIONS=39} [2024-06-27 17:47:24,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-27 17:47:24,586 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 39 transitions, 309 flow [2024-06-27 17:47:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:24,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:24,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:47:24,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:24,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1320585101, now seen corresponding path program 2 times [2024-06-27 17:47:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:24,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824830255] [2024-06-27 17:47:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:24,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824830255] [2024-06-27 17:47:24,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824830255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:47:24,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:47:24,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 17:47:24,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417026146] [2024-06-27 17:47:24,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:47:24,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 17:47:24,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 17:47:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 17:47:24,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:24,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 39 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:24,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:24,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:24,971 INFO L124 PetriNetUnfolderBase]: 379/688 cut-off events. [2024-06-27 17:47:24,972 INFO L125 PetriNetUnfolderBase]: For 2662/2662 co-relation queries the response was YES. [2024-06-27 17:47:24,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 688 events. 379/688 cut-off events. For 2662/2662 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2902 event pairs, 106 based on Foata normal form. 18/699 useless extension candidates. Maximal degree in co-relation 2422. Up to 331 conditions per place. [2024-06-27 17:47:24,977 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 49 selfloop transitions, 14 changer transitions 25/93 dead transitions. [2024-06-27 17:47:24,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 93 transitions, 713 flow [2024-06-27 17:47:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 17:47:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 17:47:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 17:47:24,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.567398119122257 [2024-06-27 17:47:24,979 INFO L175 Difference]: Start difference. First operand has 64 places, 39 transitions, 309 flow. Second operand 11 states and 181 transitions. [2024-06-27 17:47:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 93 transitions, 713 flow [2024-06-27 17:47:24,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 668 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 17:47:24,987 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 357 flow [2024-06-27 17:47:24,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=357, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2024-06-27 17:47:24,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-27 17:47:24,988 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 357 flow [2024-06-27 17:47:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:24,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:24,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:24,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:47:24,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash -456201350, now seen corresponding path program 1 times [2024-06-27 17:47:24,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:24,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576952256] [2024-06-27 17:47:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:25,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:25,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576952256] [2024-06-27 17:47:25,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576952256] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021986815] [2024-06-27 17:47:25,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:25,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:25,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:25,136 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) [2024-06-27 17:47:25,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 17:47:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:25,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-27 17:47:25,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:25,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021986815] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:25,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:25,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-06-27 17:47:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845546195] [2024-06-27 17:47:25,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:47:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:47:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 17:47:25,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:25,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 357 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:25,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:25,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:25,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:26,000 INFO L124 PetriNetUnfolderBase]: 613/1103 cut-off events. [2024-06-27 17:47:26,000 INFO L125 PetriNetUnfolderBase]: For 5933/5933 co-relation queries the response was YES. [2024-06-27 17:47:26,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1103 events. 613/1103 cut-off events. For 5933/5933 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4748 event pairs, 64 based on Foata normal form. 45/1135 useless extension candidates. Maximal degree in co-relation 4124. Up to 247 conditions per place. [2024-06-27 17:47:26,007 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 31 changer transitions 56/156 dead transitions. [2024-06-27 17:47:26,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 156 transitions, 1297 flow [2024-06-27 17:47:26,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-27 17:47:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-27 17:47:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 313 transitions. [2024-06-27 17:47:26,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5680580762250453 [2024-06-27 17:47:26,009 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 357 flow. Second operand 19 states and 313 transitions. [2024-06-27 17:47:26,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 156 transitions, 1297 flow [2024-06-27 17:47:26,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 156 transitions, 1219 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 17:47:26,022 INFO L231 Difference]: Finished difference. Result has 87 places, 58 transitions, 646 flow [2024-06-27 17:47:26,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=646, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2024-06-27 17:47:26,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-27 17:47:26,023 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 646 flow [2024-06-27 17:47:26,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:26,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:26,023 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:26,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:26,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:26,224 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:26,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash -768213302, now seen corresponding path program 1 times [2024-06-27 17:47:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:26,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155849582] [2024-06-27 17:47:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:26,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:26,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155849582] [2024-06-27 17:47:26,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155849582] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:26,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585754559] [2024-06-27 17:47:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:26,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:26,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:26,383 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) [2024-06-27 17:47:26,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 17:47:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:26,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2024-06-27 17:47:26,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:26,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585754559] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:26,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-06-27 17:47:26,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842499246] [2024-06-27 17:47:26,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-06-27 17:47:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:26,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-06-27 17:47:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-06-27 17:47:26,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:26,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 646 flow. Second operand has 17 states, 17 states have (on average 11.470588235294118) internal successors, (195), 17 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:26,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:26,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:26,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:27,553 INFO L124 PetriNetUnfolderBase]: 1297/2391 cut-off events. [2024-06-27 17:47:27,554 INFO L125 PetriNetUnfolderBase]: For 21818/21818 co-relation queries the response was YES. [2024-06-27 17:47:27,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10436 conditions, 2391 events. 1297/2391 cut-off events. For 21818/21818 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 12385 event pairs, 136 based on Foata normal form. 81/2465 useless extension candidates. Maximal degree in co-relation 10395. Up to 571 conditions per place. [2024-06-27 17:47:27,574 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 127 selfloop transitions, 64 changer transitions 91/287 dead transitions. [2024-06-27 17:47:27,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 287 transitions, 3111 flow [2024-06-27 17:47:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-06-27 17:47:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-06-27 17:47:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 523 transitions. [2024-06-27 17:47:27,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5635775862068966 [2024-06-27 17:47:27,577 INFO L175 Difference]: Start difference. First operand has 87 places, 58 transitions, 646 flow. Second operand 32 states and 523 transitions. [2024-06-27 17:47:27,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 287 transitions, 3111 flow [2024-06-27 17:47:27,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 287 transitions, 2345 flow, removed 363 selfloop flow, removed 11 redundant places. [2024-06-27 17:47:27,623 INFO L231 Difference]: Finished difference. Result has 125 places, 104 transitions, 1152 flow [2024-06-27 17:47:27,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1152, PETRI_PLACES=125, PETRI_TRANSITIONS=104} [2024-06-27 17:47:27,623 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-27 17:47:27,624 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 104 transitions, 1152 flow [2024-06-27 17:47:27,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.470588235294118) internal successors, (195), 17 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:27,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:27,624 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:27,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:27,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-06-27 17:47:27,841 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:27,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:27,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1740125296, now seen corresponding path program 2 times [2024-06-27 17:47:27,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:27,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337591281] [2024-06-27 17:47:27,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:27,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:27,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:27,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337591281] [2024-06-27 17:47:27,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337591281] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:27,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261250874] [2024-06-27 17:47:27,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:47:27,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:27,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:28,000 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) [2024-06-27 17:47:28,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 17:47:28,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:47:28,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:47:28,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2024-06-27 17:47:28,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:28,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:28,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261250874] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:28,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:28,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-06-27 17:47:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099688116] [2024-06-27 17:47:28,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:28,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-06-27 17:47:28,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-06-27 17:47:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-06-27 17:47:28,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:28,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 104 transitions, 1152 flow. Second operand has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:28,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:28,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:28,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:29,495 INFO L124 PetriNetUnfolderBase]: 1684/3112 cut-off events. [2024-06-27 17:47:29,495 INFO L125 PetriNetUnfolderBase]: For 81721/81721 co-relation queries the response was YES. [2024-06-27 17:47:29,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16499 conditions, 3112 events. 1684/3112 cut-off events. For 81721/81721 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17281 event pairs, 56 based on Foata normal form. 117/3222 useless extension candidates. Maximal degree in co-relation 16441. Up to 607 conditions per place. [2024-06-27 17:47:29,523 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 124 selfloop transitions, 105 changer transitions 115/349 dead transitions. [2024-06-27 17:47:29,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 349 transitions, 4581 flow [2024-06-27 17:47:29,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-06-27 17:47:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2024-06-27 17:47:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 589 transitions. [2024-06-27 17:47:29,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564176245210728 [2024-06-27 17:47:29,528 INFO L175 Difference]: Start difference. First operand has 125 places, 104 transitions, 1152 flow. Second operand 36 states and 589 transitions. [2024-06-27 17:47:29,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 349 transitions, 4581 flow [2024-06-27 17:47:29,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 349 transitions, 3942 flow, removed 305 selfloop flow, removed 17 redundant places. [2024-06-27 17:47:29,755 INFO L231 Difference]: Finished difference. Result has 157 places, 139 transitions, 1940 flow [2024-06-27 17:47:29,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1940, PETRI_PLACES=157, PETRI_TRANSITIONS=139} [2024-06-27 17:47:29,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-27 17:47:29,756 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 139 transitions, 1940 flow [2024-06-27 17:47:29,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.38888888888889) internal successors, (205), 18 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:29,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:29,757 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:29,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:29,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:29,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:29,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:29,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1385030843, now seen corresponding path program 3 times [2024-06-27 17:47:29,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:29,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243965307] [2024-06-27 17:47:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:29,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:30,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243965307] [2024-06-27 17:47:30,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243965307] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:30,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494734759] [2024-06-27 17:47:30,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:47:30,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:30,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:30,164 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) [2024-06-27 17:47:30,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 17:47:30,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-06-27 17:47:30,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:47:30,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-27 17:47:30,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:30,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:30,503 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:30,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494734759] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:30,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:30,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-06-27 17:47:30,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282997051] [2024-06-27 17:47:30,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:30,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-06-27 17:47:30,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:30,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-06-27 17:47:30,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-06-27 17:47:30,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:30,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 139 transitions, 1940 flow. Second operand has 25 states, 25 states have (on average 11.16) internal successors, (279), 25 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:30,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:30,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:30,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:32,511 INFO L124 PetriNetUnfolderBase]: 2458/4495 cut-off events. [2024-06-27 17:47:32,512 INFO L125 PetriNetUnfolderBase]: For 202527/202527 co-relation queries the response was YES. [2024-06-27 17:47:32,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29508 conditions, 4495 events. 2458/4495 cut-off events. For 202527/202527 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 24193 event pairs, 88 based on Foata normal form. 99/4581 useless extension candidates. Maximal degree in co-relation 29437. Up to 901 conditions per place. [2024-06-27 17:47:32,560 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 162 selfloop transitions, 157 changer transitions 146/470 dead transitions. [2024-06-27 17:47:32,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 470 transitions, 8134 flow [2024-06-27 17:47:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-06-27 17:47:32,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-06-27 17:47:32,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 799 transitions. [2024-06-27 17:47:32,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622800844475722 [2024-06-27 17:47:32,563 INFO L175 Difference]: Start difference. First operand has 157 places, 139 transitions, 1940 flow. Second operand 49 states and 799 transitions. [2024-06-27 17:47:32,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 470 transitions, 8134 flow [2024-06-27 17:47:32,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 470 transitions, 6902 flow, removed 589 selfloop flow, removed 20 redundant places. [2024-06-27 17:47:32,754 INFO L231 Difference]: Finished difference. Result has 207 places, 196 transitions, 3316 flow [2024-06-27 17:47:32,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=3316, PETRI_PLACES=207, PETRI_TRANSITIONS=196} [2024-06-27 17:47:32,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 176 predicate places. [2024-06-27 17:47:32,756 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 196 transitions, 3316 flow [2024-06-27 17:47:32,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.16) internal successors, (279), 25 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:32,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:32,757 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:32,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:32,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:32,958 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:32,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1703807206, now seen corresponding path program 4 times [2024-06-27 17:47:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337479851] [2024-06-27 17:47:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:32,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:33,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337479851] [2024-06-27 17:47:33,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337479851] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:33,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425222436] [2024-06-27 17:47:33,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:47:33,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:33,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:33,417 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) [2024-06-27 17:47:33,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-27 17:47:33,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:47:33,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:47:33,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjunts are in the unsatisfiable core [2024-06-27 17:47:33,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:33,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:33,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425222436] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:33,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:33,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 30 [2024-06-27 17:47:33,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118475531] [2024-06-27 17:47:33,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:33,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-27 17:47:33,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-27 17:47:33,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2024-06-27 17:47:34,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:34,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 196 transitions, 3316 flow. Second operand has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 31 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:34,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:34,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:34,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:36,427 INFO L124 PetriNetUnfolderBase]: 2944/5667 cut-off events. [2024-06-27 17:47:36,427 INFO L125 PetriNetUnfolderBase]: For 470957/470957 co-relation queries the response was YES. [2024-06-27 17:47:36,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45123 conditions, 5667 events. 2944/5667 cut-off events. For 470957/470957 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 33294 event pairs, 610 based on Foata normal form. 81/5741 useless extension candidates. Maximal degree in co-relation 45030. Up to 2395 conditions per place. [2024-06-27 17:47:36,492 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 232 selfloop transitions, 130 changer transitions 127/494 dead transitions. [2024-06-27 17:47:36,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 494 transitions, 10845 flow [2024-06-27 17:47:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-06-27 17:47:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-06-27 17:47:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 697 transitions. [2024-06-27 17:47:36,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462382445141066 [2024-06-27 17:47:36,496 INFO L175 Difference]: Start difference. First operand has 207 places, 196 transitions, 3316 flow. Second operand 44 states and 697 transitions. [2024-06-27 17:47:36,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 494 transitions, 10845 flow [2024-06-27 17:47:37,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 494 transitions, 8141 flow, removed 1332 selfloop flow, removed 17 redundant places. [2024-06-27 17:47:37,314 INFO L231 Difference]: Finished difference. Result has 243 places, 253 transitions, 4090 flow [2024-06-27 17:47:37,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4090, PETRI_PLACES=243, PETRI_TRANSITIONS=253} [2024-06-27 17:47:37,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-27 17:47:37,315 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 253 transitions, 4090 flow [2024-06-27 17:47:37,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.387096774193548) internal successors, (353), 31 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:37,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:37,316 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:37,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:37,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-06-27 17:47:37,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:37,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1209479808, now seen corresponding path program 5 times [2024-06-27 17:47:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966839627] [2024-06-27 17:47:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:47:37,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966839627] [2024-06-27 17:47:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966839627] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475810716] [2024-06-27 17:47:37,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-06-27 17:47:37,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:37,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:37,937 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) [2024-06-27 17:47:37,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-06-27 17:47:38,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-06-27 17:47:38,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:47:38,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjunts are in the unsatisfiable core [2024-06-27 17:47:38,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:47:38,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 202 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 17:47:38,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475810716] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:38,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:38,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 33 [2024-06-27 17:47:38,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731744825] [2024-06-27 17:47:38,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:38,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-06-27 17:47:38,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:38,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-06-27 17:47:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2024-06-27 17:47:38,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:38,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 253 transitions, 4090 flow. Second operand has 34 states, 34 states have (on average 11.411764705882353) internal successors, (388), 34 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:38,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:38,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:38,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:41,212 INFO L124 PetriNetUnfolderBase]: 3574/6956 cut-off events. [2024-06-27 17:47:41,213 INFO L125 PetriNetUnfolderBase]: For 632945/632945 co-relation queries the response was YES. [2024-06-27 17:47:41,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54775 conditions, 6956 events. 3574/6956 cut-off events. For 632945/632945 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 42221 event pairs, 184 based on Foata normal form. 81/7030 useless extension candidates. Maximal degree in co-relation 54671. Up to 1579 conditions per place. [2024-06-27 17:47:41,327 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 200 selfloop transitions, 253 changer transitions 141/599 dead transitions. [2024-06-27 17:47:41,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 599 transitions, 12134 flow [2024-06-27 17:47:41,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-06-27 17:47:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-06-27 17:47:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 818 transitions. [2024-06-27 17:47:41,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530764029749831 [2024-06-27 17:47:41,342 INFO L175 Difference]: Start difference. First operand has 243 places, 253 transitions, 4090 flow. Second operand 51 states and 818 transitions. [2024-06-27 17:47:41,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 599 transitions, 12134 flow [2024-06-27 17:47:42,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 599 transitions, 10760 flow, removed 620 selfloop flow, removed 30 redundant places. [2024-06-27 17:47:42,494 INFO L231 Difference]: Finished difference. Result has 276 places, 314 transitions, 5720 flow [2024-06-27 17:47:42,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=5720, PETRI_PLACES=276, PETRI_TRANSITIONS=314} [2024-06-27 17:47:42,495 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-27 17:47:42,496 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 314 transitions, 5720 flow [2024-06-27 17:47:42,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 11.411764705882353) internal successors, (388), 34 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:42,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:42,496 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:42,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:42,697 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:42,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1902916902, now seen corresponding path program 6 times [2024-06-27 17:47:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:42,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861388657] [2024-06-27 17:47:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:42,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:43,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861388657] [2024-06-27 17:47:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861388657] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273768962] [2024-06-27 17:47:43,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-06-27 17:47:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:43,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:43,068 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) [2024-06-27 17:47:43,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-06-27 17:47:43,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-06-27 17:47:43,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:47:43,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 23 conjunts are in the unsatisfiable core [2024-06-27 17:47:43,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:43,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 201 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:43,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273768962] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:43,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 34 [2024-06-27 17:47:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887987109] [2024-06-27 17:47:43,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-06-27 17:47:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-06-27 17:47:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2024-06-27 17:47:43,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:43,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 314 transitions, 5720 flow. Second operand has 35 states, 35 states have (on average 11.314285714285715) internal successors, (396), 35 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:43,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:43,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:43,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:47,207 INFO L124 PetriNetUnfolderBase]: 4528/8656 cut-off events. [2024-06-27 17:47:47,207 INFO L125 PetriNetUnfolderBase]: For 1064616/1064616 co-relation queries the response was YES. [2024-06-27 17:47:47,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76157 conditions, 8656 events. 4528/8656 cut-off events. For 1064616/1064616 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 54331 event pairs, 64 based on Foata normal form. 90/8739 useless extension candidates. Maximal degree in co-relation 76039. Up to 1981 conditions per place. [2024-06-27 17:47:47,417 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 211 selfloop transitions, 339 changer transitions 160/715 dead transitions. [2024-06-27 17:47:47,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 715 transitions, 15739 flow [2024-06-27 17:47:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-06-27 17:47:47,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-06-27 17:47:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 954 transitions. [2024-06-27 17:47:47,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575686732904734 [2024-06-27 17:47:47,420 INFO L175 Difference]: Start difference. First operand has 276 places, 314 transitions, 5720 flow. Second operand 59 states and 954 transitions. [2024-06-27 17:47:47,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 715 transitions, 15739 flow [2024-06-27 17:47:49,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 715 transitions, 13965 flow, removed 755 selfloop flow, removed 33 redundant places. [2024-06-27 17:47:49,258 INFO L231 Difference]: Finished difference. Result has 317 places, 383 transitions, 7315 flow [2024-06-27 17:47:49,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=4576, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=7315, PETRI_PLACES=317, PETRI_TRANSITIONS=383} [2024-06-27 17:47:49,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 286 predicate places. [2024-06-27 17:47:49,259 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 383 transitions, 7315 flow [2024-06-27 17:47:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 11.314285714285715) internal successors, (396), 35 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:49,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:49,260 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:49,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:49,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:49,464 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:49,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:49,465 INFO L85 PathProgramCache]: Analyzing trace with hash 975323023, now seen corresponding path program 7 times [2024-06-27 17:47:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551318506] [2024-06-27 17:47:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:49,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551318506] [2024-06-27 17:47:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551318506] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693179433] [2024-06-27 17:47:49,810 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-06-27 17:47:49,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:49,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:49,812 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) [2024-06-27 17:47:49,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-06-27 17:47:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:49,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 24 conjunts are in the unsatisfiable core [2024-06-27 17:47:49,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:49,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 17:47:50,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693179433] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:50,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:50,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 26 [2024-06-27 17:47:50,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062177136] [2024-06-27 17:47:50,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:50,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-06-27 17:47:50,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-06-27 17:47:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2024-06-27 17:47:50,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:50,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 383 transitions, 7315 flow. Second operand has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 27 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:50,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:50,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:50,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:47:53,441 INFO L124 PetriNetUnfolderBase]: 4771/9181 cut-off events. [2024-06-27 17:47:53,441 INFO L125 PetriNetUnfolderBase]: For 1534250/1534250 co-relation queries the response was YES. [2024-06-27 17:47:53,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89569 conditions, 9181 events. 4771/9181 cut-off events. For 1534250/1534250 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 58066 event pairs, 124 based on Foata normal form. 45/9213 useless extension candidates. Maximal degree in co-relation 89434. Up to 2089 conditions per place. [2024-06-27 17:47:53,671 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 212 selfloop transitions, 348 changer transitions 109/674 dead transitions. [2024-06-27 17:47:53,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 674 transitions, 16222 flow [2024-06-27 17:47:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-06-27 17:47:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2024-06-27 17:47:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 795 transitions. [2024-06-27 17:47:53,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594651653764954 [2024-06-27 17:47:53,677 INFO L175 Difference]: Start difference. First operand has 317 places, 383 transitions, 7315 flow. Second operand 49 states and 795 transitions. [2024-06-27 17:47:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 674 transitions, 16222 flow [2024-06-27 17:47:57,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 674 transitions, 13804 flow, removed 1031 selfloop flow, removed 39 redundant places. [2024-06-27 17:47:57,037 INFO L231 Difference]: Finished difference. Result has 329 places, 405 transitions, 7825 flow [2024-06-27 17:47:57,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5863, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7825, PETRI_PLACES=329, PETRI_TRANSITIONS=405} [2024-06-27 17:47:57,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-27 17:47:57,038 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 405 transitions, 7825 flow [2024-06-27 17:47:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.407407407407407) internal successors, (308), 27 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:57,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:47:57,039 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:47:57,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-06-27 17:47:57,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-27 17:47:57,239 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:47:57,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:47:57,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1550516536, now seen corresponding path program 8 times [2024-06-27 17:47:57,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:47:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801141330] [2024-06-27 17:47:57,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:47:57,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:47:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:47:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:57,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:47:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801141330] [2024-06-27 17:47:57,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801141330] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:47:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161602238] [2024-06-27 17:47:57,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 17:47:57,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:47:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:47:57,627 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) [2024-06-27 17:47:57,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-06-27 17:47:57,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 17:47:57,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:47:57,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 26 conjunts are in the unsatisfiable core [2024-06-27 17:47:57,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:47:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:57,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 17:47:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:47:58,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161602238] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 17:47:58,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 17:47:58,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 25 [2024-06-27 17:47:58,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290490260] [2024-06-27 17:47:58,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 17:47:58,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-06-27 17:47:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:47:58,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-06-27 17:47:58,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2024-06-27 17:47:58,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-06-27 17:47:58,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 405 transitions, 7825 flow. Second operand has 26 states, 26 states have (on average 10.961538461538462) internal successors, (285), 26 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:47:58,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:47:58,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-06-27 17:47:58,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:01,356 INFO L124 PetriNetUnfolderBase]: 4681/9042 cut-off events. [2024-06-27 17:48:01,357 INFO L125 PetriNetUnfolderBase]: For 1544708/1544708 co-relation queries the response was YES. [2024-06-27 17:48:01,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86586 conditions, 9042 events. 4681/9042 cut-off events. For 1544708/1544708 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 57314 event pairs, 112 based on Foata normal form. 45/9080 useless extension candidates. Maximal degree in co-relation 86448. Up to 2047 conditions per place. [2024-06-27 17:48:01,457 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 204 selfloop transitions, 351 changer transitions 107/667 dead transitions. [2024-06-27 17:48:01,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 667 transitions, 14917 flow [2024-06-27 17:48:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-06-27 17:48:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-06-27 17:48:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 775 transitions. [2024-06-27 17:48:01,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567528735632183 [2024-06-27 17:48:01,459 INFO L175 Difference]: Start difference. First operand has 329 places, 405 transitions, 7825 flow. Second operand 48 states and 775 transitions. [2024-06-27 17:48:01,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 667 transitions, 14917 flow [2024-06-27 17:48:04,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 667 transitions, 13014 flow, removed 845 selfloop flow, removed 25 redundant places. [2024-06-27 17:48:04,614 INFO L231 Difference]: Finished difference. Result has 351 places, 407 transitions, 7679 flow [2024-06-27 17:48:04,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6802, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=7679, PETRI_PLACES=351, PETRI_TRANSITIONS=407} [2024-06-27 17:48:04,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-27 17:48:04,615 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 407 transitions, 7679 flow [2024-06-27 17:48:04,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.961538461538462) internal successors, (285), 26 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:48:04,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:04,616 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:04,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-06-27 17:48:04,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-06-27 17:48:04,822 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:48:04,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:04,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1134161791, now seen corresponding path program 9 times [2024-06-27 17:48:04,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:04,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650564914] [2024-06-27 17:48:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 249 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 17:48:04,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:04,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650564914] [2024-06-27 17:48:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650564914] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:48:04,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573930793] [2024-06-27 17:48:04,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 17:48:04,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:48:04,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:48:04,981 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) [2024-06-27 17:48:05,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-06-27 17:48:05,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2024-06-27 17:48:05,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:48:05,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 17:48:05,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:48:05,140 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-06-27 17:48:05,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:48:05,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573930793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:05,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:48:05,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-06-27 17:48:05,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550716287] [2024-06-27 17:48:05,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:05,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:48:05,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:05,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:48:05,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:48:05,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 29 [2024-06-27 17:48:05,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 407 transitions, 7679 flow. Second operand has 13 states, 13 states have (on average 16.923076923076923) internal successors, (220), 13 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:48:05,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:05,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 29 [2024-06-27 17:48:05,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:12,559 INFO L124 PetriNetUnfolderBase]: 15304/29907 cut-off events. [2024-06-27 17:48:12,559 INFO L125 PetriNetUnfolderBase]: For 3027343/3030241 co-relation queries the response was YES. [2024-06-27 17:48:12,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208583 conditions, 29907 events. 15304/29907 cut-off events. For 3027343/3030241 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 261458 event pairs, 752 based on Foata normal form. 551/27054 useless extension candidates. Maximal degree in co-relation 208457. Up to 5394 conditions per place. [2024-06-27 17:48:12,924 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 58 selfloop transitions, 22 changer transitions 304/490 dead transitions. [2024-06-27 17:48:12,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 490 transitions, 7593 flow [2024-06-27 17:48:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:48:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:48:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 301 transitions. [2024-06-27 17:48:12,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7984084880636605 [2024-06-27 17:48:12,926 INFO L175 Difference]: Start difference. First operand has 351 places, 407 transitions, 7679 flow. Second operand 13 states and 301 transitions. [2024-06-27 17:48:12,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 490 transitions, 7593 flow [2024-06-27 17:48:16,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 490 transitions, 6777 flow, removed 75 selfloop flow, removed 50 redundant places. [2024-06-27 17:48:16,942 INFO L231 Difference]: Finished difference. Result has 309 places, 138 transitions, 1719 flow [2024-06-27 17:48:16,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1719, PETRI_PLACES=309, PETRI_TRANSITIONS=138} [2024-06-27 17:48:16,942 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-27 17:48:16,943 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 138 transitions, 1719 flow [2024-06-27 17:48:16,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.923076923076923) internal successors, (220), 13 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:48:16,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:48:16,943 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:16,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-06-27 17:48:17,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-06-27 17:48:17,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-27 17:48:17,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:48:17,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1457708662, now seen corresponding path program 10 times [2024-06-27 17:48:17,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:48:17,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966093470] [2024-06-27 17:48:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:48:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:48:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:48:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 253 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:48:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966093470] [2024-06-27 17:48:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966093470] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 17:48:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791899590] [2024-06-27 17:48:17,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-27 17:48:17,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:48:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:48:17,286 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) [2024-06-27 17:48:17,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-06-27 17:48:17,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-27 17:48:17,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 17:48:17,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-27 17:48:17,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 17:48:17,423 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 281 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:48:17,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-27 17:48:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791899590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:48:17,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-27 17:48:17,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2024-06-27 17:48:17,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135015168] [2024-06-27 17:48:17,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:48:17,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 17:48:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:48:17,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 17:48:17,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-06-27 17:48:17,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 29 [2024-06-27 17:48:17,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 138 transitions, 1719 flow. Second operand has 13 states, 13 states have (on average 16.923076923076923) internal successors, (220), 13 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:48:17,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:48:17,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 29 [2024-06-27 17:48:17,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:48:27,371 INFO L124 PetriNetUnfolderBase]: 29319/50836 cut-off events. [2024-06-27 17:48:27,371 INFO L125 PetriNetUnfolderBase]: For 3274113/3277719 co-relation queries the response was YES. [2024-06-27 17:48:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285959 conditions, 50836 events. 29319/50836 cut-off events. For 3274113/3277719 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 430930 event pairs, 500 based on Foata normal form. 163/45939 useless extension candidates. Maximal degree in co-relation 285839. Up to 8704 conditions per place. [2024-06-27 17:48:28,138 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 0 selfloop transitions, 0 changer transitions 412/412 dead transitions. [2024-06-27 17:48:28,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 412 transitions, 3251 flow [2024-06-27 17:48:28,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 17:48:28,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 17:48:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 268 transitions. [2024-06-27 17:48:28,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7108753315649867 [2024-06-27 17:48:28,140 INFO L175 Difference]: Start difference. First operand has 309 places, 138 transitions, 1719 flow. Second operand 13 states and 268 transitions. [2024-06-27 17:48:28,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 412 transitions, 3251 flow [2024-06-27 17:48:53,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 412 transitions, 2772 flow, removed 56 selfloop flow, removed 78 redundant places. [2024-06-27 17:48:53,082 INFO L231 Difference]: Finished difference. Result has 202 places, 0 transitions, 0 flow [2024-06-27 17:48:53,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=202, PETRI_TRANSITIONS=0} [2024-06-27 17:48:53,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 17:48:53,083 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 0 transitions, 0 flow [2024-06-27 17:48:53,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.923076923076923) internal successors, (220), 13 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:48:53,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-06-27 17:48:53,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-06-27 17:48:53,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-27 17:48:53,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-06-27 17:48:53,086 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-27 17:48:53,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-06-27 17:48:53,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 17:48:53,293 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:48:53,295 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 17:48:53,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 17:48:53,298 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 17:48:53,298 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 17:48:53,299 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 05:48:53 BasicIcfg [2024-06-27 17:48:53,299 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 17:48:53,300 INFO L158 Benchmark]: Toolchain (without parser) took 93177.10ms. Allocated memory was 159.4MB in the beginning and 13.3GB in the end (delta: 13.2GB). Free memory was 101.8MB in the beginning and 10.0GB in the end (delta: -9.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2024-06-27 17:48:53,300 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:48:53,300 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:48:53,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 552.91ms. Allocated memory is still 159.4MB. Free memory was 101.8MB in the beginning and 77.0MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 17:48:53,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.29ms. Allocated memory is still 159.4MB. Free memory was 77.0MB in the beginning and 74.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:48:53,301 INFO L158 Benchmark]: Boogie Preprocessor took 34.84ms. Allocated memory is still 159.4MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:48:53,301 INFO L158 Benchmark]: RCFGBuilder took 379.40ms. Allocated memory is still 159.4MB. Free memory was 72.9MB in the beginning and 115.7MB in the end (delta: -42.8MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2024-06-27 17:48:53,302 INFO L158 Benchmark]: TraceAbstraction took 92137.50ms. Allocated memory was 159.4MB in the beginning and 13.3GB in the end (delta: 13.2GB). Free memory was 114.9MB in the beginning and 10.0GB in the end (delta: -9.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. [2024-06-27 17:48:53,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 159.4MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 552.91ms. Allocated memory is still 159.4MB. Free memory was 101.8MB in the beginning and 77.0MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.29ms. Allocated memory is still 159.4MB. Free memory was 77.0MB in the beginning and 74.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.84ms. Allocated memory is still 159.4MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 379.40ms. Allocated memory is still 159.4MB. Free memory was 72.9MB in the beginning and 115.7MB in the end (delta: -42.8MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 92137.50ms. Allocated memory was 159.4MB in the beginning and 13.3GB in the end (delta: 13.2GB). Free memory was 114.9MB in the beginning and 10.0GB in the end (delta: -9.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 714]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 715]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 92.0s, OverallIterations: 19, TraceHistogramMax: 11, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 80.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6812 SdHoareTripleChecker+Valid, 5.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6682 mSDsluCounter, 287 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 274 mSDsCounter, 399 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9865 IncrementalHoareTripleChecker+Invalid, 10264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 399 mSolverCounterUnsat, 13 mSDtfsCounter, 9865 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1618 GetRequests, 951 SyntacticMatches, 44 SemanticMatches, 623 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10663 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7825occurred in iteration=16, InterpolantAutomatonStates: 469, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1320 NumberOfCodeBlocks, 1317 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 1740 ConstructedInterpolants, 0 QuantifiedInterpolants, 6872 SizeOfPredicates, 120 NumberOfNonLiveVariables, 1669 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 39 InterpolantComputations, 10 PerfectInterpolantSequences, 1101/4616 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 17:48:53,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE