./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe029_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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-wmm/safe029_tso.i ./goblint.2024-05-21_14-57-05.files/protection/safe029_tso.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:32:45,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:32:45,659 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:32:45,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:32:45,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:32:45,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:32:45,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:32:45,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:32:45,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:32:45,688 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:32:45,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:32:45,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:32:45,689 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:32:45,690 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:32:45,691 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:32:45,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:32:45,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:32:45,691 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:32:45,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:32:45,691 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:32:45,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:32:45,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:32:45,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:32:45,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:32:45,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:32:45,693 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:32:45,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:32:45,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:32:45,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:32:45,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:32:45,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:32:45,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:32:45,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:32:45,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:32:45,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:32:45,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:32:45,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:32:45,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:32:45,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:32:45,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:32:45,696 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:32:45,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:32:45,697 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:32:45,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:32:45,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:32:45,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:32:45,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:32:45,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:32:45,879 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:32:45,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-14 11:32:46,945 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:32:47,132 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:32:47,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-14 11:32:47,142 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e83d83ed/eca969527c374c1a9649a463cf33b554/FLAGe9cacb56e [2024-06-14 11:32:47,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e83d83ed/eca969527c374c1a9649a463cf33b554 [2024-06-14 11:32:47,156 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:32:47,157 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:32:47,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe029_tso.yml/witness.yml [2024-06-14 11:32:47,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:32:47,235 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:32:47,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:32:47,237 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:32:47,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:32:47,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:32:47" (1/2) ... [2024-06-14 11:32:47,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d12c80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:32:47, skipping insertion in model container [2024-06-14 11:32:47,244 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:32:47" (1/2) ... [2024-06-14 11:32:47,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77a05f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:32:47, skipping insertion in model container [2024-06-14 11:32:47,245 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:32:47" (2/2) ... [2024-06-14 11:32:47,245 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44d12c80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47, skipping insertion in model container [2024-06-14 11:32:47,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:32:47" (2/2) ... [2024-06-14 11:32:47,246 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:32:47,272 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:32:47,273 INFO L97 edCorrectnessWitness]: Location invariant before [L759-L759] ((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-14 11:32:47,274 INFO L97 edCorrectnessWitness]: Location invariant before [L760-L760] ((! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-14 11:32:47,274 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:32:47,274 INFO L106 edCorrectnessWitness]: ghost_update [L757-L757] multithreaded = 1; [2024-06-14 11:32:47,313 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:32:47,559 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:32:47,568 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:32:47,637 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:32:47,666 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:32:47,667 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47 WrapperNode [2024-06-14 11:32:47,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:32:47,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:32:47,668 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:32:47,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:32:47,673 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 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,699 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 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,714 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2024-06-14 11:32:47,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:32:47,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:32:47,717 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:32:47,717 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:32:47,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,724 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,750 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]. [2024-06-14 11:32:47,750 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,762 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,766 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:32:47,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:32:47,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:32:47,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:32:47,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (1/1) ... [2024-06-14 11:32:47,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:32:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:32:47,801 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) [2024-06-14 11:32:47,854 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 [2024-06-14 11:32:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:32:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:32:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:32:47,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:32:47,866 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:32:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:32:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:32:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:32:47,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:32:47,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:32:47,868 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:32:47,972 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:32:47,974 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:32:48,138 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:32:48,138 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:32:48,224 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:32:48,225 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:32:48,225 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:32:48 BoogieIcfgContainer [2024-06-14 11:32:48,225 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:32:48,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:32:48,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:32:48,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:32:48,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:32:47" (1/4) ... [2024-06-14 11:32:48,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21415f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:32:48, skipping insertion in model container [2024-06-14 11:32:48,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:32:47" (2/4) ... [2024-06-14 11:32:48,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21415f6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:32:48, skipping insertion in model container [2024-06-14 11:32:48,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:32:47" (3/4) ... [2024-06-14 11:32:48,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21415f6c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:32:48, skipping insertion in model container [2024-06-14 11:32:48,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:32:48" (4/4) ... [2024-06-14 11:32:48,236 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-06-14 11:32:48,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:32:48,248 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:32:48,248 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:32:48,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:32:48,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 11:32:48,335 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-14 11:32:48,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:32:48,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:32:48,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 11:32:48,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-14 11:32:48,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:32:48,350 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;@77c334f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:32:48,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:32:48,353 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:32:48,353 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:32:48,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:32:48,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:48,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:32:48,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:48,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:48,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1468039764, now seen corresponding path program 1 times [2024-06-14 11:32:48,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:48,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352236794] [2024-06-14 11:32:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:48,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:48,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:48,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352236794] [2024-06-14 11:32:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352236794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:48,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:32:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684009721] [2024-06-14 11:32:48,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:48,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:32:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:48,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:32:48,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:32:48,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:48,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:48,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:48,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:48,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:48,754 INFO L124 PetriNetUnfolderBase]: 109/222 cut-off events. [2024-06-14 11:32:48,754 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 11:32:48,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443 conditions, 222 events. 109/222 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 803 event pairs, 61 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 429. Up to 198 conditions per place. [2024-06-14 11:32:48,761 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-14 11:32:48,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-14 11:32:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:32:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:32:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-14 11:32:48,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-14 11:32:48,774 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 56 transitions. [2024-06-14 11:32:48,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-14 11:32:48,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:32:48,779 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-14 11:32:48,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-14 11:32:48,783 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-14 11:32:48,784 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-14 11:32:48,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:48,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:48,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:48,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:32:48,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:48,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2036969459, now seen corresponding path program 1 times [2024-06-14 11:32:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:48,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343745104] [2024-06-14 11:32:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:48,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343745104] [2024-06-14 11:32:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343745104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:48,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:48,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:32:48,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531419508] [2024-06-14 11:32:48,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:48,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:32:48,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:48,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:32:48,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:32:48,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:48,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:48,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:48,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:48,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:49,074 INFO L124 PetriNetUnfolderBase]: 106/217 cut-off events. [2024-06-14 11:32:49,074 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-14 11:32:49,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 217 events. 106/217 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 785 event pairs, 46 based on Foata normal form. 2/214 useless extension candidates. Maximal degree in co-relation 482. Up to 184 conditions per place. [2024-06-14 11:32:49,077 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-14 11:32:49,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 155 flow [2024-06-14 11:32:49,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:32:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:32:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-14 11:32:49,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-14 11:32:49,080 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 72 transitions. [2024-06-14 11:32:49,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 155 flow [2024-06-14 11:32:49,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:32:49,083 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-14 11:32:49,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-14 11:32:49,084 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-14 11:32:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-14 11:32:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:49,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:49,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:32:49,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:49,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:49,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1278455233, now seen corresponding path program 1 times [2024-06-14 11:32:49,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:49,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360607258] [2024-06-14 11:32:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:49,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:49,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:49,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360607258] [2024-06-14 11:32:49,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360607258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:49,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:49,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:32:49,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863601690] [2024-06-14 11:32:49,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:49,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:32:49,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:32:49,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:32:49,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:49,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:49,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:49,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:49,305 INFO L124 PetriNetUnfolderBase]: 116/240 cut-off events. [2024-06-14 11:32:49,305 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-06-14 11:32:49,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 240 events. 116/240 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 904 event pairs, 27 based on Foata normal form. 4/241 useless extension candidates. Maximal degree in co-relation 582. Up to 143 conditions per place. [2024-06-14 11:32:49,312 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 35 selfloop transitions, 14 changer transitions 0/53 dead transitions. [2024-06-14 11:32:49,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 53 transitions, 269 flow [2024-06-14 11:32:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:32:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:32:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-14 11:32:49,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-06-14 11:32:49,318 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 99 transitions. [2024-06-14 11:32:49,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 53 transitions, 269 flow [2024-06-14 11:32:49,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 260 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:32:49,322 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 181 flow [2024-06-14 11:32:49,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-06-14 11:32:49,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-14 11:32:49,323 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 181 flow [2024-06-14 11:32:49,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:49,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:49,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:32:49,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:49,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash -234799938, now seen corresponding path program 1 times [2024-06-14 11:32:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:49,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424661560] [2024-06-14 11:32:49,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:49,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:49,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:49,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424661560] [2024-06-14 11:32:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424661560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:49,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:49,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35061529] [2024-06-14 11:32:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:49,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:49,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:49,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:49,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:49,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:49,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:49,503 INFO L124 PetriNetUnfolderBase]: 131/281 cut-off events. [2024-06-14 11:32:49,504 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-06-14 11:32:49,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 281 events. 131/281 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1153 event pairs, 17 based on Foata normal form. 14/292 useless extension candidates. Maximal degree in co-relation 865. Up to 114 conditions per place. [2024-06-14 11:32:49,505 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 38 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-14 11:32:49,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 359 flow [2024-06-14 11:32:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-14 11:32:49,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-14 11:32:49,507 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 181 flow. Second operand 6 states and 114 transitions. [2024-06-14 11:32:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 359 flow [2024-06-14 11:32:49,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 355 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 11:32:49,510 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 215 flow [2024-06-14 11:32:49,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-06-14 11:32:49,510 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-14 11:32:49,511 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 215 flow [2024-06-14 11:32:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:49,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:49,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:32:49,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:49,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash -908847899, now seen corresponding path program 1 times [2024-06-14 11:32:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997611739] [2024-06-14 11:32:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997611739] [2024-06-14 11:32:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997611739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:49,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:32:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554577089] [2024-06-14 11:32:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:49,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:32:49,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:32:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:32:49,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:49,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 215 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) [2024-06-14 11:32:49,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:49,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:49,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:49,620 INFO L124 PetriNetUnfolderBase]: 129/280 cut-off events. [2024-06-14 11:32:49,620 INFO L125 PetriNetUnfolderBase]: For 508/508 co-relation queries the response was YES. [2024-06-14 11:32:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 280 events. 129/280 cut-off events. For 508/508 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1155 event pairs, 33 based on Foata normal form. 1/281 useless extension candidates. Maximal degree in co-relation 961. Up to 245 conditions per place. [2024-06-14 11:32:49,622 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 35 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2024-06-14 11:32:49,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 44 transitions, 325 flow [2024-06-14 11:32:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:32:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:32:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 11:32:49,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-14 11:32:49,623 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 215 flow. Second operand 4 states and 67 transitions. [2024-06-14 11:32:49,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 44 transitions, 325 flow [2024-06-14 11:32:49,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 285 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 11:32:49,626 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 212 flow [2024-06-14 11:32:49,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-06-14 11:32:49,626 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-14 11:32:49,627 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 212 flow [2024-06-14 11:32:49,627 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) [2024-06-14 11:32:49,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:49,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:49,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:32:49,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:49,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:49,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1889795087, now seen corresponding path program 1 times [2024-06-14 11:32:49,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:49,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33773871] [2024-06-14 11:32:49,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:49,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:49,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:49,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33773871] [2024-06-14 11:32:49,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33773871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:49,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:49,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:32:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755378773] [2024-06-14 11:32:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:49,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:32:49,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:32:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:32:49,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:49,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:49,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:49,743 INFO L124 PetriNetUnfolderBase]: 130/286 cut-off events. [2024-06-14 11:32:49,743 INFO L125 PetriNetUnfolderBase]: For 521/521 co-relation queries the response was YES. [2024-06-14 11:32:49,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 286 events. 130/286 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1210 event pairs, 36 based on Foata normal form. 3/288 useless extension candidates. Maximal degree in co-relation 926. Up to 189 conditions per place. [2024-06-14 11:32:49,745 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 17 changer transitions 0/50 dead transitions. [2024-06-14 11:32:49,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 358 flow [2024-06-14 11:32:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:32:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:32:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-14 11:32:49,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-06-14 11:32:49,746 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 212 flow. Second operand 5 states and 91 transitions. [2024-06-14 11:32:49,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 358 flow [2024-06-14 11:32:49,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 343 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 11:32:49,748 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 257 flow [2024-06-14 11:32:49,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-06-14 11:32:49,749 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-14 11:32:49,749 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 257 flow [2024-06-14 11:32:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:49,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:49,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:32:49,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:49,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:49,750 INFO L85 PathProgramCache]: Analyzing trace with hash -331753964, now seen corresponding path program 1 times [2024-06-14 11:32:49,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:49,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706075118] [2024-06-14 11:32:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:49,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:49,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:49,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706075118] [2024-06-14 11:32:49,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706075118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:49,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:49,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:32:49,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430426725] [2024-06-14 11:32:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:49,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:32:49,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:49,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:32:49,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:32:49,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:49,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:49,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:49,883 INFO L124 PetriNetUnfolderBase]: 130/283 cut-off events. [2024-06-14 11:32:49,884 INFO L125 PetriNetUnfolderBase]: For 621/621 co-relation queries the response was YES. [2024-06-14 11:32:49,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 283 events. 130/283 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1175 event pairs, 32 based on Foata normal form. 2/282 useless extension candidates. Maximal degree in co-relation 1002. Up to 186 conditions per place. [2024-06-14 11:32:49,885 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-14 11:32:49,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 428 flow [2024-06-14 11:32:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:32:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:32:49,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-14 11:32:49,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-14 11:32:49,887 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 257 flow. Second operand 5 states and 93 transitions. [2024-06-14 11:32:49,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 428 flow [2024-06-14 11:32:49,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 411 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-14 11:32:49,890 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 304 flow [2024-06-14 11:32:49,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-14 11:32:49,892 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-06-14 11:32:49,892 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 304 flow [2024-06-14 11:32:49,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:49,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:49,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:32:49,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:49,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:49,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1523961918, now seen corresponding path program 2 times [2024-06-14 11:32:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:49,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812088877] [2024-06-14 11:32:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:49,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:49,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:49,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812088877] [2024-06-14 11:32:49,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812088877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:49,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:49,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:32:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521042875] [2024-06-14 11:32:49,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:32:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:49,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:32:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:32:49,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:49,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:49,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:49,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,012 INFO L124 PetriNetUnfolderBase]: 120/255 cut-off events. [2024-06-14 11:32:50,012 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2024-06-14 11:32:50,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 255 events. 120/255 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1002 event pairs, 36 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 937. Up to 168 conditions per place. [2024-06-14 11:32:50,014 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 17 changer transitions 1/51 dead transitions. [2024-06-14 11:32:50,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 428 flow [2024-06-14 11:32:50,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:32:50,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:32:50,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-14 11:32:50,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-06-14 11:32:50,015 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 304 flow. Second operand 5 states and 89 transitions. [2024-06-14 11:32:50,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 428 flow [2024-06-14 11:32:50,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 404 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:32:50,017 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 312 flow [2024-06-14 11:32:50,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-14 11:32:50,018 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-14 11:32:50,018 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 312 flow [2024-06-14 11:32:50,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:32:50,019 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,019 INFO L85 PathProgramCache]: Analyzing trace with hash -678060850, now seen corresponding path program 1 times [2024-06-14 11:32:50,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40031959] [2024-06-14 11:32:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40031959] [2024-06-14 11:32:50,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40031959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230739091] [2024-06-14 11:32:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:50,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,163 INFO L124 PetriNetUnfolderBase]: 127/278 cut-off events. [2024-06-14 11:32:50,164 INFO L125 PetriNetUnfolderBase]: For 1285/1285 co-relation queries the response was YES. [2024-06-14 11:32:50,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 278 events. 127/278 cut-off events. For 1285/1285 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1148 event pairs, 38 based on Foata normal form. 12/289 useless extension candidates. Maximal degree in co-relation 998. Up to 145 conditions per place. [2024-06-14 11:32:50,165 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 19 changer transitions 4/56 dead transitions. [2024-06-14 11:32:50,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 470 flow [2024-06-14 11:32:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-14 11:32:50,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-14 11:32:50,166 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 312 flow. Second operand 6 states and 106 transitions. [2024-06-14 11:32:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 470 flow [2024-06-14 11:32:50,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 407 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 11:32:50,169 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 295 flow [2024-06-14 11:32:50,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-14 11:32:50,170 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-14 11:32:50,170 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 295 flow [2024-06-14 11:32:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:32:50,171 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash -965766018, now seen corresponding path program 1 times [2024-06-14 11:32:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753340211] [2024-06-14 11:32:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753340211] [2024-06-14 11:32:50,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753340211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:32:50,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142875265] [2024-06-14 11:32:50,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:32:50,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:32:50,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:32:50,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,286 INFO L124 PetriNetUnfolderBase]: 124/274 cut-off events. [2024-06-14 11:32:50,286 INFO L125 PetriNetUnfolderBase]: For 1044/1044 co-relation queries the response was YES. [2024-06-14 11:32:50,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 274 events. 124/274 cut-off events. For 1044/1044 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1129 event pairs, 42 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 998. Up to 183 conditions per place. [2024-06-14 11:32:50,287 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 15 changer transitions 0/52 dead transitions. [2024-06-14 11:32:50,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 52 transitions, 441 flow [2024-06-14 11:32:50,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:32:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:32:50,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-14 11:32:50,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-14 11:32:50,288 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 295 flow. Second operand 5 states and 87 transitions. [2024-06-14 11:32:50,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 52 transitions, 441 flow [2024-06-14 11:32:50,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 380 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:32:50,291 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 285 flow [2024-06-14 11:32:50,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-14 11:32:50,292 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-14 11:32:50,292 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 285 flow [2024-06-14 11:32:50,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:32:50,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,293 INFO L85 PathProgramCache]: Analyzing trace with hash -966510018, now seen corresponding path program 2 times [2024-06-14 11:32:50,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583335263] [2024-06-14 11:32:50,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583335263] [2024-06-14 11:32:50,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583335263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:32:50,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961624495] [2024-06-14 11:32:50,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:32:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:32:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:32:50,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,400 INFO L124 PetriNetUnfolderBase]: 122/272 cut-off events. [2024-06-14 11:32:50,400 INFO L125 PetriNetUnfolderBase]: For 1037/1039 co-relation queries the response was YES. [2024-06-14 11:32:50,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 272 events. 122/272 cut-off events. For 1037/1039 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1131 event pairs, 40 based on Foata normal form. 3/275 useless extension candidates. Maximal degree in co-relation 939. Up to 181 conditions per place. [2024-06-14 11:32:50,401 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 15 changer transitions 0/54 dead transitions. [2024-06-14 11:32:50,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 407 flow [2024-06-14 11:32:50,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:32:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:32:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-14 11:32:50,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-06-14 11:32:50,402 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 285 flow. Second operand 5 states and 89 transitions. [2024-06-14 11:32:50,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 407 flow [2024-06-14 11:32:50,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 11:32:50,405 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 290 flow [2024-06-14 11:32:50,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-14 11:32:50,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-14 11:32:50,406 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 290 flow [2024-06-14 11:32:50,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:32:50,407 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1040595429, now seen corresponding path program 1 times [2024-06-14 11:32:50,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426292186] [2024-06-14 11:32:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426292186] [2024-06-14 11:32:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426292186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444773998] [2024-06-14 11:32:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:50,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,572 INFO L124 PetriNetUnfolderBase]: 148/326 cut-off events. [2024-06-14 11:32:50,572 INFO L125 PetriNetUnfolderBase]: For 1689/1689 co-relation queries the response was YES. [2024-06-14 11:32:50,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1233 conditions, 326 events. 148/326 cut-off events. For 1689/1689 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1430 event pairs, 39 based on Foata normal form. 2/325 useless extension candidates. Maximal degree in co-relation 1204. Up to 124 conditions per place. [2024-06-14 11:32:50,574 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 39 selfloop transitions, 19 changer transitions 1/63 dead transitions. [2024-06-14 11:32:50,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 63 transitions, 490 flow [2024-06-14 11:32:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-14 11:32:50,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-14 11:32:50,575 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 290 flow. Second operand 6 states and 107 transitions. [2024-06-14 11:32:50,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 63 transitions, 490 flow [2024-06-14 11:32:50,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 11:32:50,580 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 294 flow [2024-06-14 11:32:50,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-14 11:32:50,581 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-14 11:32:50,581 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 294 flow [2024-06-14 11:32:50,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:32:50,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1801332379, now seen corresponding path program 2 times [2024-06-14 11:32:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499223170] [2024-06-14 11:32:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499223170] [2024-06-14 11:32:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499223170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:50,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737986043] [2024-06-14 11:32:50,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:50,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:50,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,734 INFO L124 PetriNetUnfolderBase]: 145/321 cut-off events. [2024-06-14 11:32:50,734 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-06-14 11:32:50,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 321 events. 145/321 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1414 event pairs, 49 based on Foata normal form. 2/320 useless extension candidates. Maximal degree in co-relation 1186. Up to 224 conditions per place. [2024-06-14 11:32:50,736 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 19 changer transitions 0/57 dead transitions. [2024-06-14 11:32:50,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 426 flow [2024-06-14 11:32:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-14 11:32:50,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-14 11:32:50,737 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 294 flow. Second operand 6 states and 104 transitions. [2024-06-14 11:32:50,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 426 flow [2024-06-14 11:32:50,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 388 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 11:32:50,741 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 298 flow [2024-06-14 11:32:50,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-14 11:32:50,742 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-14 11:32:50,742 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 298 flow [2024-06-14 11:32:50,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:32:50,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash 262522301, now seen corresponding path program 1 times [2024-06-14 11:32:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662256181] [2024-06-14 11:32:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662256181] [2024-06-14 11:32:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662256181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:50,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925421914] [2024-06-14 11:32:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:50,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:50,879 INFO L124 PetriNetUnfolderBase]: 142/314 cut-off events. [2024-06-14 11:32:50,879 INFO L125 PetriNetUnfolderBase]: For 1940/1940 co-relation queries the response was YES. [2024-06-14 11:32:50,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 314 events. 142/314 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1376 event pairs, 50 based on Foata normal form. 2/315 useless extension candidates. Maximal degree in co-relation 1157. Up to 219 conditions per place. [2024-06-14 11:32:50,881 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 19 changer transitions 0/55 dead transitions. [2024-06-14 11:32:50,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 428 flow [2024-06-14 11:32:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-14 11:32:50,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-06-14 11:32:50,882 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 298 flow. Second operand 6 states and 101 transitions. [2024-06-14 11:32:50,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 428 flow [2024-06-14 11:32:50,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 378 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:32:50,886 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 302 flow [2024-06-14 11:32:50,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-06-14 11:32:50,887 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-14 11:32:50,887 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 302 flow [2024-06-14 11:32:50,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:50,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:50,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:32:50,888 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:50,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:50,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1218569965, now seen corresponding path program 2 times [2024-06-14 11:32:50,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:50,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356515398] [2024-06-14 11:32:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:50,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:50,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:50,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356515398] [2024-06-14 11:32:50,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356515398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:50,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:50,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155181998] [2024-06-14 11:32:50,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:50,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:50,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:50,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:50,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:50,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:50,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:50,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:50,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,030 INFO L124 PetriNetUnfolderBase]: 139/309 cut-off events. [2024-06-14 11:32:51,031 INFO L125 PetriNetUnfolderBase]: For 1927/1927 co-relation queries the response was YES. [2024-06-14 11:32:51,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 309 events. 139/309 cut-off events. For 1927/1927 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1348 event pairs, 49 based on Foata normal form. 2/310 useless extension candidates. Maximal degree in co-relation 1105. Up to 129 conditions per place. [2024-06-14 11:32:51,032 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 19 changer transitions 1/60 dead transitions. [2024-06-14 11:32:51,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 474 flow [2024-06-14 11:32:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-14 11:32:51,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-14 11:32:51,034 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 302 flow. Second operand 6 states and 104 transitions. [2024-06-14 11:32:51,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 474 flow [2024-06-14 11:32:51,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 430 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:32:51,038 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 300 flow [2024-06-14 11:32:51,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=300, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-06-14 11:32:51,038 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-14 11:32:51,038 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 300 flow [2024-06-14 11:32:51,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:32:51,039 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,039 INFO L85 PathProgramCache]: Analyzing trace with hash 173447391, now seen corresponding path program 1 times [2024-06-14 11:32:51,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960020602] [2024-06-14 11:32:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960020602] [2024-06-14 11:32:51,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960020602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988519550] [2024-06-14 11:32:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,164 INFO L124 PetriNetUnfolderBase]: 147/342 cut-off events. [2024-06-14 11:32:51,165 INFO L125 PetriNetUnfolderBase]: For 2616/2616 co-relation queries the response was YES. [2024-06-14 11:32:51,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 342 events. 147/342 cut-off events. For 2616/2616 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1580 event pairs, 59 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 1172. Up to 207 conditions per place. [2024-06-14 11:32:51,166 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 33 selfloop transitions, 9 changer transitions 11/57 dead transitions. [2024-06-14 11:32:51,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 57 transitions, 430 flow [2024-06-14 11:32:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-14 11:32:51,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-14 11:32:51,167 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 300 flow. Second operand 6 states and 95 transitions. [2024-06-14 11:32:51,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 57 transitions, 430 flow [2024-06-14 11:32:51,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 373 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:32:51,172 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 253 flow [2024-06-14 11:32:51,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-06-14 11:32:51,173 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-06-14 11:32:51,173 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 253 flow [2024-06-14 11:32:51,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:32:51,173 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -775899419, now seen corresponding path program 2 times [2024-06-14 11:32:51,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206195216] [2024-06-14 11:32:51,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206195216] [2024-06-14 11:32:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206195216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909246825] [2024-06-14 11:32:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,302 INFO L124 PetriNetUnfolderBase]: 124/290 cut-off events. [2024-06-14 11:32:51,302 INFO L125 PetriNetUnfolderBase]: For 2023/2023 co-relation queries the response was YES. [2024-06-14 11:32:51,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 290 events. 124/290 cut-off events. For 2023/2023 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1268 event pairs, 35 based on Foata normal form. 6/295 useless extension candidates. Maximal degree in co-relation 908. Up to 117 conditions per place. [2024-06-14 11:32:51,304 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 16 changer transitions 13/58 dead transitions. [2024-06-14 11:32:51,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 393 flow [2024-06-14 11:32:51,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-14 11:32:51,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-14 11:32:51,305 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 253 flow. Second operand 6 states and 102 transitions. [2024-06-14 11:32:51,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 393 flow [2024-06-14 11:32:51,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 379 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:32:51,308 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 249 flow [2024-06-14 11:32:51,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=249, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2024-06-14 11:32:51,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-14 11:32:51,309 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 249 flow [2024-06-14 11:32:51,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:32:51,310 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -576911463, now seen corresponding path program 3 times [2024-06-14 11:32:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404367375] [2024-06-14 11:32:51,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404367375] [2024-06-14 11:32:51,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404367375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067949817] [2024-06-14 11:32:51,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,460 INFO L124 PetriNetUnfolderBase]: 109/251 cut-off events. [2024-06-14 11:32:51,461 INFO L125 PetriNetUnfolderBase]: For 2498/2502 co-relation queries the response was YES. [2024-06-14 11:32:51,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 251 events. 109/251 cut-off events. For 2498/2502 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1052 event pairs, 41 based on Foata normal form. 6/257 useless extension candidates. Maximal degree in co-relation 899. Up to 82 conditions per place. [2024-06-14 11:32:51,462 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 32 selfloop transitions, 10 changer transitions 6/52 dead transitions. [2024-06-14 11:32:51,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 401 flow [2024-06-14 11:32:51,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 11:32:51,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-14 11:32:51,463 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 249 flow. Second operand 6 states and 96 transitions. [2024-06-14 11:32:51,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 401 flow [2024-06-14 11:32:51,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 361 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:32:51,466 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 223 flow [2024-06-14 11:32:51,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2024-06-14 11:32:51,466 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-14 11:32:51,466 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 223 flow [2024-06-14 11:32:51,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:32:51,467 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1097592981, now seen corresponding path program 1 times [2024-06-14 11:32:51,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96043658] [2024-06-14 11:32:51,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96043658] [2024-06-14 11:32:51,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96043658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760503215] [2024-06-14 11:32:51,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,601 INFO L124 PetriNetUnfolderBase]: 93/219 cut-off events. [2024-06-14 11:32:51,602 INFO L125 PetriNetUnfolderBase]: For 2158/2160 co-relation queries the response was YES. [2024-06-14 11:32:51,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 219 events. 93/219 cut-off events. For 2158/2160 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 864 event pairs, 35 based on Foata normal form. 8/227 useless extension candidates. Maximal degree in co-relation 777. Up to 66 conditions per place. [2024-06-14 11:32:51,603 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 13 changer transitions 5/50 dead transitions. [2024-06-14 11:32:51,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 50 transitions, 369 flow [2024-06-14 11:32:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-14 11:32:51,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-06-14 11:32:51,604 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 223 flow. Second operand 6 states and 97 transitions. [2024-06-14 11:32:51,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 50 transitions, 369 flow [2024-06-14 11:32:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 345 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:32:51,606 INFO L231 Difference]: Finished difference. Result has 59 places, 38 transitions, 227 flow [2024-06-14 11:32:51,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=59, PETRI_TRANSITIONS=38} [2024-06-14 11:32:51,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-14 11:32:51,607 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 38 transitions, 227 flow [2024-06-14 11:32:51,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:32:51,607 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1103164611, now seen corresponding path program 2 times [2024-06-14 11:32:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216088551] [2024-06-14 11:32:51,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216088551] [2024-06-14 11:32:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216088551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491134369] [2024-06-14 11:32:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 38 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,733 INFO L124 PetriNetUnfolderBase]: 93/219 cut-off events. [2024-06-14 11:32:51,734 INFO L125 PetriNetUnfolderBase]: For 2069/2071 co-relation queries the response was YES. [2024-06-14 11:32:51,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 219 events. 93/219 cut-off events. For 2069/2071 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 881 event pairs, 41 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 781. Up to 118 conditions per place. [2024-06-14 11:32:51,735 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 6 changer transitions 11/46 dead transitions. [2024-06-14 11:32:51,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 331 flow [2024-06-14 11:32:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 94 transitions. [2024-06-14 11:32:51,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-14 11:32:51,736 INFO L175 Difference]: Start difference. First operand has 59 places, 38 transitions, 227 flow. Second operand 6 states and 94 transitions. [2024-06-14 11:32:51,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 46 transitions, 331 flow [2024-06-14 11:32:51,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 46 transitions, 303 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-14 11:32:51,738 INFO L231 Difference]: Finished difference. Result has 59 places, 33 transitions, 181 flow [2024-06-14 11:32:51,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=33} [2024-06-14 11:32:51,739 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-14 11:32:51,739 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 33 transitions, 181 flow [2024-06-14 11:32:51,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:32:51,740 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1097802231, now seen corresponding path program 3 times [2024-06-14 11:32:51,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962529730] [2024-06-14 11:32:51,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962529730] [2024-06-14 11:32:51,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962529730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590578012] [2024-06-14 11:32:51,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 33 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,864 INFO L124 PetriNetUnfolderBase]: 62/152 cut-off events. [2024-06-14 11:32:51,864 INFO L125 PetriNetUnfolderBase]: For 1325/1325 co-relation queries the response was YES. [2024-06-14 11:32:51,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 152 events. 62/152 cut-off events. For 1325/1325 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 497 event pairs, 27 based on Foata normal form. 8/160 useless extension candidates. Maximal degree in co-relation 489. Up to 68 conditions per place. [2024-06-14 11:32:51,865 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 17 selfloop transitions, 5 changer transitions 14/40 dead transitions. [2024-06-14 11:32:51,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 40 transitions, 269 flow [2024-06-14 11:32:51,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-14 11:32:51,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-14 11:32:51,866 INFO L175 Difference]: Start difference. First operand has 59 places, 33 transitions, 181 flow. Second operand 6 states and 92 transitions. [2024-06-14 11:32:51,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 40 transitions, 269 flow [2024-06-14 11:32:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 40 transitions, 251 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 11:32:51,868 INFO L231 Difference]: Finished difference. Result has 55 places, 24 transitions, 121 flow [2024-06-14 11:32:51,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=55, PETRI_TRANSITIONS=24} [2024-06-14 11:32:51,868 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-14 11:32:51,868 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 24 transitions, 121 flow [2024-06-14 11:32:51,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:32:51,869 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash -451742643, now seen corresponding path program 4 times [2024-06-14 11:32:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33521860] [2024-06-14 11:32:51,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:51,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33521860] [2024-06-14 11:32:51,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33521860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:51,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:51,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136120639] [2024-06-14 11:32:51,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:51,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:51,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 24 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:51,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:51,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:51,982 INFO L124 PetriNetUnfolderBase]: 42/110 cut-off events. [2024-06-14 11:32:51,983 INFO L125 PetriNetUnfolderBase]: For 797/797 co-relation queries the response was YES. [2024-06-14 11:32:51,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 110 events. 42/110 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 309 event pairs, 17 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 330. Up to 52 conditions per place. [2024-06-14 11:32:51,983 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 16 selfloop transitions, 2 changer transitions 10/32 dead transitions. [2024-06-14 11:32:51,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 32 transitions, 195 flow [2024-06-14 11:32:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-14 11:32:51,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-06-14 11:32:51,985 INFO L175 Difference]: Start difference. First operand has 55 places, 24 transitions, 121 flow. Second operand 6 states and 89 transitions. [2024-06-14 11:32:51,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 32 transitions, 195 flow [2024-06-14 11:32:51,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 32 transitions, 162 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:32:51,986 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 81 flow [2024-06-14 11:32:51,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=44, PETRI_TRANSITIONS=21} [2024-06-14 11:32:51,986 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-14 11:32:51,987 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 81 flow [2024-06-14 11:32:51,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:51,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:32:51,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:51,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:32:51,987 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:32:51,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:32:51,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1274605019, now seen corresponding path program 5 times [2024-06-14 11:32:51,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:32:51,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891533522] [2024-06-14 11:32:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:32:51,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:32:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:32:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:32:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:32:52,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891533522] [2024-06-14 11:32:52,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891533522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:32:52,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:32:52,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:32:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752435024] [2024-06-14 11:32:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:32:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:32:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:32:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:32:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:32:52,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-14 11:32:52,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:52,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:32:52,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-14 11:32:52,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:32:52,093 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-14 11:32:52,094 INFO L125 PetriNetUnfolderBase]: For 223/223 co-relation queries the response was YES. [2024-06-14 11:32:52,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 60 events. 20/60 cut-off events. For 223/223 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 2 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 139. Up to 24 conditions per place. [2024-06-14 11:32:52,094 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-14 11:32:52,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 25 transitions, 115 flow [2024-06-14 11:32:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:32:52,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:32:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-14 11:32:52,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-14 11:32:52,095 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 81 flow. Second operand 6 states and 82 transitions. [2024-06-14 11:32:52,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 25 transitions, 115 flow [2024-06-14 11:32:52,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-14 11:32:52,096 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-14 11:32:52,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-14 11:32:52,096 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-06-14 11:32:52,096 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-14 11:32:52,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:32:52,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:32:52,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:32:52,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:32:52,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:32:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:32:52,100 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:32:52,102 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:32:52,102 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:32:52,105 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:32:52,105 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:32:52,106 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:32:52 BasicIcfg [2024-06-14 11:32:52,106 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:32:52,106 INFO L158 Benchmark]: Toolchain (without parser) took 4871.57ms. Allocated memory was 125.8MB in the beginning and 209.7MB in the end (delta: 83.9MB). Free memory was 84.4MB in the beginning and 111.3MB in the end (delta: -26.9MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2024-06-14 11:32:52,107 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:32:52,107 INFO L158 Benchmark]: Witness Parser took 4.47ms. Allocated memory is still 125.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:32:52,107 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.58ms. Allocated memory is still 125.8MB. Free memory was 84.1MB in the beginning and 58.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-14 11:32:52,107 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.61ms. Allocated memory is still 125.8MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:32:52,107 INFO L158 Benchmark]: Boogie Preprocessor took 57.31ms. Allocated memory is still 125.8MB. Free memory was 56.8MB in the beginning and 55.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:32:52,108 INFO L158 Benchmark]: RCFGBuilder took 450.87ms. Allocated memory is still 125.8MB. Free memory was 54.7MB in the beginning and 91.8MB in the end (delta: -37.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2024-06-14 11:32:52,108 INFO L158 Benchmark]: TraceAbstraction took 3879.47ms. Allocated memory was 125.8MB in the beginning and 209.7MB in the end (delta: 83.9MB). Free memory was 91.2MB in the beginning and 111.3MB in the end (delta: -20.1MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2024-06-14 11:32:52,109 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.47ms. Allocated memory is still 125.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.58ms. Allocated memory is still 125.8MB. Free memory was 84.1MB in the beginning and 58.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.61ms. Allocated memory is still 125.8MB. Free memory was 58.9MB in the beginning and 56.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.31ms. Allocated memory is still 125.8MB. Free memory was 56.8MB in the beginning and 55.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 450.87ms. Allocated memory is still 125.8MB. Free memory was 54.7MB in the beginning and 91.8MB in the end (delta: -37.1MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3879.47ms. Allocated memory was 125.8MB in the beginning and 209.7MB in the end (delta: 83.9MB). Free memory was 91.2MB in the beginning and 111.3MB in the end (delta: -20.1MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 759]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 760]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 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: 3.8s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 824 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 537 mSDsluCounter, 270 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2296 IncrementalHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 72 mSDtfsCounter, 2296 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=8, InterpolantAutomatonStates: 125, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 304 ConstructedInterpolants, 0 QuantifiedInterpolants, 1471 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 11:32:52,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE