./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c --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/parallel-lamport.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/weaver/parallel-lamport.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/parallel-lamport.wvr.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-bcb38a6-m [2024-06-03 19:01:23,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:01:23,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:01:23,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:01:23,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:01:23,719 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:01:23,720 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:01:23,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:01:23,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:01:23,724 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:01:23,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:01:23,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:01:23,725 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:01:23,726 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:01:23,726 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:01:23,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:01:23,727 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:01:23,727 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:01:23,727 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:01:23,727 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:01:23,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:01:23,728 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:01:23,728 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:01:23,728 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:01:23,729 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:01:23,729 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:01:23,729 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:01:23,729 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:01:23,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:01:23,730 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:01:23,731 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:01:23,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:01:23,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:23,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:01:23,731 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:01:23,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:01:23,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:01:23,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:01:23,732 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:01:23,732 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:01:23,732 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:01:23,733 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:01:23,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:01:23,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:01:23,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:01:23,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:01:23,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:01:23,975 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:01:23,977 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:01:23,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/parallel-lamport.wvr.yml/witness.yml [2024-06-03 19:01:24,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:01:24,074 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:01:24,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-06-03 19:01:25,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:01:25,277 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:01:25,277 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-06-03 19:01:25,283 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035ef6e05/7e3c5092e2ae4390b300f7738752343b/FLAG454930779 [2024-06-03 19:01:25,295 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035ef6e05/7e3c5092e2ae4390b300f7738752343b [2024-06-03 19:01:25,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:01:25,297 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:01:25,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:25,299 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:01:25,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:01:25,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:24" (1/2) ... [2024-06-03 19:01:25,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adee0a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:25, skipping insertion in model container [2024-06-03 19:01:25,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:24" (1/2) ... [2024-06-03 19:01:25,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23a1b13 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:01:25, skipping insertion in model container [2024-06-03 19:01:25,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:25" (2/2) ... [2024-06-03 19:01:25,306 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adee0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25, skipping insertion in model container [2024-06-03 19:01:25,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:01:25" (2/2) ... [2024-06-03 19:01:25,306 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:01:25,318 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:01:25,324 INFO L97 edCorrectnessWitness]: Location invariant before [L155-L155] (! multithreaded || -2147483647 <= n2) && (! multithreaded || -2147483647 <= n1) [2024-06-03 19:01:25,325 INFO L97 edCorrectnessWitness]: Location invariant before [L156-L156] (! multithreaded || -2147483647 <= n2) && (! multithreaded || -2147483647 <= n1) [2024-06-03 19:01:25,325 INFO L97 edCorrectnessWitness]: Location invariant before [L154-L154] (! multithreaded || -2147483647 <= n2) && (! multithreaded || -2147483647 <= n1) [2024-06-03 19:01:25,325 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:01:25,325 INFO L106 edCorrectnessWitness]: ghost_update [L153-L153] multithreaded = 1; [2024-06-03 19:01:25,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:01:25,554 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:25,561 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:01:25,623 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:01:25,635 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:01:25,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25 WrapperNode [2024-06-03 19:01:25,635 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:01:25,636 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:25,636 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:01:25,636 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:01:25,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,649 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,671 INFO L138 Inliner]: procedures = 24, calls = 75, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 233 [2024-06-03 19:01:25,672 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:01:25,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:01:25,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:01:25,673 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:01:25,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,683 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,695 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-03 19:01:25,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:01:25,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:01:25,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:01:25,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:01:25,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (1/1) ... [2024-06-03 19:01:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:01:25,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:01:25,732 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) [2024-06-03 19:01:25,749 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 [2024-06-03 19:01:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:01:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 19:01:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 19:01:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 19:01:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 19:01:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 19:01:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 19:01:25,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:01:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 19:01:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 19:01:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 19:01:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:01:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:01:25,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-03 19:01:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:01:25,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:01:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 19:01:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 19:01:25,768 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:01:25,867 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:01:25,869 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:01:26,153 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:01:26,153 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:01:26,356 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:01:26,357 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-06-03 19:01:26,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:26 BoogieIcfgContainer [2024-06-03 19:01:26,358 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:01:26,360 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:01:26,361 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:01:26,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:01:26,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:01:24" (1/4) ... [2024-06-03 19:01:26,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c429828 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:01:26, skipping insertion in model container [2024-06-03 19:01:26,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:01:25" (2/4) ... [2024-06-03 19:01:26,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c429828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:26, skipping insertion in model container [2024-06-03 19:01:26,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:01:25" (3/4) ... [2024-06-03 19:01:26,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c429828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:01:26, skipping insertion in model container [2024-06-03 19:01:26,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:01:26" (4/4) ... [2024-06-03 19:01:26,368 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-06-03 19:01:26,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:01:26,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 19:01:26,381 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:01:26,423 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-03 19:01:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 50 transitions, 121 flow [2024-06-03 19:01:26,479 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-06-03 19:01:26,479 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 19:01:26,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-06-03 19:01:26,481 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 50 transitions, 121 flow [2024-06-03 19:01:26,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 42 transitions, 93 flow [2024-06-03 19:01:26,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:01:26,504 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;@ab25c18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:01:26,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 19:01:26,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:01:26,511 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2024-06-03 19:01:26,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:01:26,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:26,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:26,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:26,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1249256800, now seen corresponding path program 1 times [2024-06-03 19:01:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:26,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976380339] [2024-06-03 19:01:26,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:26,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:26,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:26,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976380339] [2024-06-03 19:01:26,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976380339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:26,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:26,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:01:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116152741] [2024-06-03 19:01:26,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:26,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:01:26,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:01:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:01:26,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2024-06-03 19:01:26,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:26,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:26,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2024-06-03 19:01:26,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:27,271 INFO L124 PetriNetUnfolderBase]: 1948/3283 cut-off events. [2024-06-03 19:01:27,271 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-06-03 19:01:27,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6306 conditions, 3283 events. 1948/3283 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 19529 event pairs, 855 based on Foata normal form. 5/3217 useless extension candidates. Maximal degree in co-relation 6287. Up to 2880 conditions per place. [2024-06-03 19:01:27,291 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 42 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2024-06-03 19:01:27,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 215 flow [2024-06-03 19:01:27,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:01:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:01:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-03 19:01:27,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-03 19:01:27,303 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 93 flow. Second operand 3 states and 90 transitions. [2024-06-03 19:01:27,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 215 flow [2024-06-03 19:01:27,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 19:01:27,310 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 113 flow [2024-06-03 19:01:27,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-03 19:01:27,314 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-03 19:01:27,315 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 113 flow [2024-06-03 19:01:27,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:27,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:27,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:27,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:01:27,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:27,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash 719273958, now seen corresponding path program 1 times [2024-06-03 19:01:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935038690] [2024-06-03 19:01:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:27,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:27,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935038690] [2024-06-03 19:01:27,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935038690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:27,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:27,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:01:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692638078] [2024-06-03 19:01:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:27,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:27,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:27,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-06-03 19:01:27,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:27,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:27,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-06-03 19:01:27,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:27,904 INFO L124 PetriNetUnfolderBase]: 3302/5265 cut-off events. [2024-06-03 19:01:27,904 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-06-03 19:01:27,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11217 conditions, 5265 events. 3302/5265 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 30546 event pairs, 751 based on Foata normal form. 95/5358 useless extension candidates. Maximal degree in co-relation 11198. Up to 2744 conditions per place. [2024-06-03 19:01:27,930 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 80 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2024-06-03 19:01:27,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 97 transitions, 426 flow [2024-06-03 19:01:27,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-03 19:01:27,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584 [2024-06-03 19:01:27,932 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 113 flow. Second operand 5 states and 146 transitions. [2024-06-03 19:01:27,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 97 transitions, 426 flow [2024-06-03 19:01:27,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 97 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:27,935 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 172 flow [2024-06-03 19:01:27,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-03 19:01:27,935 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2024-06-03 19:01:27,936 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 172 flow [2024-06-03 19:01:27,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:27,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:27,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:27,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:01:27,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:27,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1944888253, now seen corresponding path program 1 times [2024-06-03 19:01:27,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:27,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588201970] [2024-06-03 19:01:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:27,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:28,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:28,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588201970] [2024-06-03 19:01:28,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588201970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:28,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:28,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 19:01:28,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611121946] [2024-06-03 19:01:28,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:28,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 19:01:28,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 19:01:28,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 19:01:28,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2024-06-03 19:01:28,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:28,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:28,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2024-06-03 19:01:28,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:28,451 INFO L124 PetriNetUnfolderBase]: 3715/6059 cut-off events. [2024-06-03 19:01:28,452 INFO L125 PetriNetUnfolderBase]: For 2582/2624 co-relation queries the response was YES. [2024-06-03 19:01:28,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14196 conditions, 6059 events. 3715/6059 cut-off events. For 2582/2624 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 36358 event pairs, 1251 based on Foata normal form. 126/6164 useless extension candidates. Maximal degree in co-relation 14173. Up to 3051 conditions per place. [2024-06-03 19:01:28,477 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 77 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-06-03 19:01:28,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 495 flow [2024-06-03 19:01:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:01:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:01:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-03 19:01:28,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.568 [2024-06-03 19:01:28,481 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 172 flow. Second operand 5 states and 142 transitions. [2024-06-03 19:01:28,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 495 flow [2024-06-03 19:01:28,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 484 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:28,489 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 244 flow [2024-06-03 19:01:28,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-06-03 19:01:28,491 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2024-06-03 19:01:28,491 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 244 flow [2024-06-03 19:01:28,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:28,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:28,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:28,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:01:28,492 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:28,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash 706383781, now seen corresponding path program 1 times [2024-06-03 19:01:28,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:28,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487875494] [2024-06-03 19:01:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:28,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:01:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:28,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487875494] [2024-06-03 19:01:28,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487875494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:28,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:28,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:01:28,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141628087] [2024-06-03 19:01:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:28,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:01:28,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:01:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:01:28,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 50 [2024-06-03 19:01:28,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:28,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:28,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 50 [2024-06-03 19:01:28,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:28,767 INFO L124 PetriNetUnfolderBase]: 1788/3304 cut-off events. [2024-06-03 19:01:28,767 INFO L125 PetriNetUnfolderBase]: For 1200/1236 co-relation queries the response was YES. [2024-06-03 19:01:28,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7434 conditions, 3304 events. 1788/3304 cut-off events. For 1200/1236 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 22033 event pairs, 1752 based on Foata normal form. 3/3105 useless extension candidates. Maximal degree in co-relation 7405. Up to 2688 conditions per place. [2024-06-03 19:01:28,785 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 26 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-06-03 19:01:28,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 55 transitions, 302 flow [2024-06-03 19:01:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:01:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:01:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-03 19:01:28,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-03 19:01:28,786 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 244 flow. Second operand 3 states and 86 transitions. [2024-06-03 19:01:28,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 55 transitions, 302 flow [2024-06-03 19:01:28,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 55 transitions, 290 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:28,855 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 244 flow [2024-06-03 19:01:28,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-06-03 19:01:28,856 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-06-03 19:01:28,856 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 244 flow [2024-06-03 19:01:28,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:28,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:28,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:28,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:01:28,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:28,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:28,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1877106661, now seen corresponding path program 1 times [2024-06-03 19:01:28,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:28,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020536658] [2024-06-03 19:01:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:28,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:28,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:28,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020536658] [2024-06-03 19:01:28,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020536658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:28,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:28,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:01:28,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743408709] [2024-06-03 19:01:28,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:28,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:28,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:01:28,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:28,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 244 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:28,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:28,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:28,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:29,789 INFO L124 PetriNetUnfolderBase]: 7076/11361 cut-off events. [2024-06-03 19:01:29,789 INFO L125 PetriNetUnfolderBase]: For 8287/8287 co-relation queries the response was YES. [2024-06-03 19:01:29,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27834 conditions, 11361 events. 7076/11361 cut-off events. For 8287/8287 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 74797 event pairs, 1643 based on Foata normal form. 270/11630 useless extension candidates. Maximal degree in co-relation 27813. Up to 2420 conditions per place. [2024-06-03 19:01:29,932 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 145 selfloop transitions, 26 changer transitions 0/177 dead transitions. [2024-06-03 19:01:29,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 177 transitions, 954 flow [2024-06-03 19:01:29,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:01:29,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:01:29,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 257 transitions. [2024-06-03 19:01:29,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5711111111111111 [2024-06-03 19:01:29,948 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 244 flow. Second operand 9 states and 257 transitions. [2024-06-03 19:01:29,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 177 transitions, 954 flow [2024-06-03 19:01:29,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 177 transitions, 950 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:29,962 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 431 flow [2024-06-03 19:01:29,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=431, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-06-03 19:01:29,964 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2024-06-03 19:01:29,964 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 431 flow [2024-06-03 19:01:29,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:29,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:29,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:29,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 19:01:29,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:29,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash -982001257, now seen corresponding path program 2 times [2024-06-03 19:01:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:29,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143557691] [2024-06-03 19:01:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:30,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143557691] [2024-06-03 19:01:30,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143557691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:30,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:30,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:01:30,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360698806] [2024-06-03 19:01:30,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:30,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:30,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:30,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:30,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:01:30,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:30,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:30,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:30,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:30,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:31,319 INFO L124 PetriNetUnfolderBase]: 10240/16393 cut-off events. [2024-06-03 19:01:31,320 INFO L125 PetriNetUnfolderBase]: For 35243/35245 co-relation queries the response was YES. [2024-06-03 19:01:31,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45934 conditions, 16393 events. 10240/16393 cut-off events. For 35243/35245 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 114141 event pairs, 3170 based on Foata normal form. 200/16592 useless extension candidates. Maximal degree in co-relation 45903. Up to 10404 conditions per place. [2024-06-03 19:01:31,514 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 152 selfloop transitions, 21 changer transitions 1/180 dead transitions. [2024-06-03 19:01:31,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 180 transitions, 1223 flow [2024-06-03 19:01:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:01:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:01:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-03 19:01:31,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-03 19:01:31,515 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 431 flow. Second operand 9 states and 243 transitions. [2024-06-03 19:01:31,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 180 transitions, 1223 flow [2024-06-03 19:01:31,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 180 transitions, 1200 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:31,597 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 674 flow [2024-06-03 19:01:31,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=674, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-06-03 19:01:31,598 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 39 predicate places. [2024-06-03 19:01:31,598 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 674 flow [2024-06-03 19:01:31,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:31,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:31,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:31,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 19:01:31,599 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:31,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:31,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1998767871, now seen corresponding path program 3 times [2024-06-03 19:01:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256753859] [2024-06-03 19:01:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256753859] [2024-06-03 19:01:31,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256753859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:31,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:31,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:01:31,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213543211] [2024-06-03 19:01:31,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:31,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:31,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:31,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:31,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:01:31,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:31,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 674 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:31,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:31,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:31,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:33,157 INFO L124 PetriNetUnfolderBase]: 11327/18226 cut-off events. [2024-06-03 19:01:33,157 INFO L125 PetriNetUnfolderBase]: For 70497/70497 co-relation queries the response was YES. [2024-06-03 19:01:33,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53840 conditions, 18226 events. 11327/18226 cut-off events. For 70497/70497 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 130218 event pairs, 3557 based on Foata normal form. 258/18483 useless extension candidates. Maximal degree in co-relation 53802. Up to 12232 conditions per place. [2024-06-03 19:01:33,252 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 176 selfloop transitions, 20 changer transitions 6/208 dead transitions. [2024-06-03 19:01:33,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 208 transitions, 1496 flow [2024-06-03 19:01:33,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:01:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:01:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-03 19:01:33,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-06-03 19:01:33,254 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 674 flow. Second operand 11 states and 290 transitions. [2024-06-03 19:01:33,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 208 transitions, 1496 flow [2024-06-03 19:01:33,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 208 transitions, 1475 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 19:01:33,438 INFO L231 Difference]: Finished difference. Result has 105 places, 86 transitions, 771 flow [2024-06-03 19:01:33,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=771, PETRI_PLACES=105, PETRI_TRANSITIONS=86} [2024-06-03 19:01:33,439 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2024-06-03 19:01:33,439 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 86 transitions, 771 flow [2024-06-03 19:01:33,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:33,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:33,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:33,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 19:01:33,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:33,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:33,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1681510037, now seen corresponding path program 4 times [2024-06-03 19:01:33,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:33,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652192588] [2024-06-03 19:01:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:33,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652192588] [2024-06-03 19:01:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652192588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:33,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:01:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743872415] [2024-06-03 19:01:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:33,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:33,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:01:33,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:33,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 86 transitions, 771 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:33,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:33,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:33,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:34,990 INFO L124 PetriNetUnfolderBase]: 10590/17087 cut-off events. [2024-06-03 19:01:34,990 INFO L125 PetriNetUnfolderBase]: For 98591/98591 co-relation queries the response was YES. [2024-06-03 19:01:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53439 conditions, 17087 events. 10590/17087 cut-off events. For 98591/98591 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 121375 event pairs, 3459 based on Foata normal form. 150/17236 useless extension candidates. Maximal degree in co-relation 53394. Up to 12206 conditions per place. [2024-06-03 19:01:35,181 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 153 selfloop transitions, 17 changer transitions 3/179 dead transitions. [2024-06-03 19:01:35,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 179 transitions, 1373 flow [2024-06-03 19:01:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:01:35,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:01:35,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-03 19:01:35,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-06-03 19:01:35,183 INFO L175 Difference]: Start difference. First operand has 105 places, 86 transitions, 771 flow. Second operand 9 states and 237 transitions. [2024-06-03 19:01:35,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 179 transitions, 1373 flow [2024-06-03 19:01:35,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 179 transitions, 1299 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-03 19:01:35,407 INFO L231 Difference]: Finished difference. Result has 110 places, 84 transitions, 719 flow [2024-06-03 19:01:35,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=719, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2024-06-03 19:01:35,409 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 59 predicate places. [2024-06-03 19:01:35,409 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 719 flow [2024-06-03 19:01:35,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:35,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:35,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:35,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 19:01:35,410 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:35,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:35,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1342184677, now seen corresponding path program 5 times [2024-06-03 19:01:35,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:35,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431689869] [2024-06-03 19:01:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:35,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:35,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:35,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431689869] [2024-06-03 19:01:35,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431689869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:35,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:35,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:01:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516315554] [2024-06-03 19:01:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:01:35,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:35,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 719 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:35,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:35,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:35,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:36,905 INFO L124 PetriNetUnfolderBase]: 9750/15858 cut-off events. [2024-06-03 19:01:36,905 INFO L125 PetriNetUnfolderBase]: For 81962/81968 co-relation queries the response was YES. [2024-06-03 19:01:36,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47514 conditions, 15858 events. 9750/15858 cut-off events. For 81962/81968 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 112381 event pairs, 3030 based on Foata normal form. 156/16013 useless extension candidates. Maximal degree in co-relation 47469. Up to 10760 conditions per place. [2024-06-03 19:01:36,993 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 169 selfloop transitions, 18 changer transitions 4/197 dead transitions. [2024-06-03 19:01:36,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 197 transitions, 1451 flow [2024-06-03 19:01:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-03 19:01:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-03 19:01:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-03 19:01:36,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036363636363637 [2024-06-03 19:01:36,996 INFO L175 Difference]: Start difference. First operand has 110 places, 84 transitions, 719 flow. Second operand 11 states and 277 transitions. [2024-06-03 19:01:36,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 197 transitions, 1451 flow [2024-06-03 19:01:37,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 197 transitions, 1399 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-03 19:01:37,227 INFO L231 Difference]: Finished difference. Result has 113 places, 82 transitions, 697 flow [2024-06-03 19:01:37,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=697, PETRI_PLACES=113, PETRI_TRANSITIONS=82} [2024-06-03 19:01:37,228 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2024-06-03 19:01:37,228 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 82 transitions, 697 flow [2024-06-03 19:01:37,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:37,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:37,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:37,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 19:01:37,229 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:37,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1327236767, now seen corresponding path program 6 times [2024-06-03 19:01:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:37,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341438141] [2024-06-03 19:01:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:37,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341438141] [2024-06-03 19:01:37,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341438141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:37,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:37,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 19:01:37,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327247460] [2024-06-03 19:01:37,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:37,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 19:01:37,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 19:01:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 19:01:37,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:37,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 82 transitions, 697 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:37,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:37,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:37,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:38,445 INFO L124 PetriNetUnfolderBase]: 8736/14445 cut-off events. [2024-06-03 19:01:38,446 INFO L125 PetriNetUnfolderBase]: For 69168/69174 co-relation queries the response was YES. [2024-06-03 19:01:38,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40536 conditions, 14445 events. 8736/14445 cut-off events. For 69168/69174 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 102733 event pairs, 1412 based on Foata normal form. 276/14720 useless extension candidates. Maximal degree in co-relation 40490. Up to 3940 conditions per place. [2024-06-03 19:01:38,518 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 139 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-03 19:01:38,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 186 transitions, 1407 flow [2024-06-03 19:01:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:01:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:01:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-03 19:01:38,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-03 19:01:38,520 INFO L175 Difference]: Start difference. First operand has 113 places, 82 transitions, 697 flow. Second operand 9 states and 250 transitions. [2024-06-03 19:01:38,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 186 transitions, 1407 flow [2024-06-03 19:01:38,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 186 transitions, 1355 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-03 19:01:38,634 INFO L231 Difference]: Finished difference. Result has 114 places, 85 transitions, 789 flow [2024-06-03 19:01:38,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=789, PETRI_PLACES=114, PETRI_TRANSITIONS=85} [2024-06-03 19:01:38,634 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 63 predicate places. [2024-06-03 19:01:38,635 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 85 transitions, 789 flow [2024-06-03 19:01:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:38,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:38,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:38,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 19:01:38,635 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:38,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash 33869219, now seen corresponding path program 1 times [2024-06-03 19:01:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533395413] [2024-06-03 19:01:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:38,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533395413] [2024-06-03 19:01:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533395413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443850628] [2024-06-03 19:01:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:01:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:01:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:01:38,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-03 19:01:38,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 85 transitions, 789 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:38,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:38,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-03 19:01:38,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:39,809 INFO L124 PetriNetUnfolderBase]: 8246/13639 cut-off events. [2024-06-03 19:01:39,809 INFO L125 PetriNetUnfolderBase]: For 66639/66978 co-relation queries the response was YES. [2024-06-03 19:01:39,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38639 conditions, 13639 events. 8246/13639 cut-off events. For 66639/66978 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 97613 event pairs, 2023 based on Foata normal form. 145/13735 useless extension candidates. Maximal degree in co-relation 38591. Up to 8178 conditions per place. [2024-06-03 19:01:39,872 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 65 selfloop transitions, 22 changer transitions 11/112 dead transitions. [2024-06-03 19:01:39,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 1105 flow [2024-06-03 19:01:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:01:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:01:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-03 19:01:39,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-03 19:01:39,873 INFO L175 Difference]: Start difference. First operand has 114 places, 85 transitions, 789 flow. Second operand 4 states and 116 transitions. [2024-06-03 19:01:39,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 1105 flow [2024-06-03 19:01:39,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 112 transitions, 1018 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-03 19:01:39,969 INFO L231 Difference]: Finished difference. Result has 112 places, 73 transitions, 625 flow [2024-06-03 19:01:39,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=625, PETRI_PLACES=112, PETRI_TRANSITIONS=73} [2024-06-03 19:01:39,969 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 61 predicate places. [2024-06-03 19:01:39,969 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 73 transitions, 625 flow [2024-06-03 19:01:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:39,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:39,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:39,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 19:01:39,970 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:39,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:39,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1642792477, now seen corresponding path program 1 times [2024-06-03 19:01:39,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:39,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264547204] [2024-06-03 19:01:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:39,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264547204] [2024-06-03 19:01:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264547204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:40,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:40,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:01:40,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100604912] [2024-06-03 19:01:40,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:40,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:01:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:01:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:01:40,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2024-06-03 19:01:40,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 73 transitions, 625 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:40,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:40,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2024-06-03 19:01:40,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:40,682 INFO L124 PetriNetUnfolderBase]: 5627/9386 cut-off events. [2024-06-03 19:01:40,682 INFO L125 PetriNetUnfolderBase]: For 48135/48297 co-relation queries the response was YES. [2024-06-03 19:01:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25419 conditions, 9386 events. 5627/9386 cut-off events. For 48135/48297 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 64614 event pairs, 1445 based on Foata normal form. 144/9493 useless extension candidates. Maximal degree in co-relation 25371. Up to 5214 conditions per place. [2024-06-03 19:01:40,727 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 60 selfloop transitions, 10 changer transitions 22/104 dead transitions. [2024-06-03 19:01:40,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 943 flow [2024-06-03 19:01:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:01:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:01:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-03 19:01:40,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-06-03 19:01:40,729 INFO L175 Difference]: Start difference. First operand has 112 places, 73 transitions, 625 flow. Second operand 4 states and 118 transitions. [2024-06-03 19:01:40,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 943 flow [2024-06-03 19:01:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 822 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-03 19:01:40,776 INFO L231 Difference]: Finished difference. Result has 99 places, 54 transitions, 347 flow [2024-06-03 19:01:40,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=347, PETRI_PLACES=99, PETRI_TRANSITIONS=54} [2024-06-03 19:01:40,776 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-03 19:01:40,777 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 54 transitions, 347 flow [2024-06-03 19:01:40,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:40,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:40,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:40,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 19:01:40,777 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:40,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash -804118520, now seen corresponding path program 1 times [2024-06-03 19:01:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:40,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497680408] [2024-06-03 19:01:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:40,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497680408] [2024-06-03 19:01:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497680408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:40,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:40,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:01:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009865569] [2024-06-03 19:01:40,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:40,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:01:40,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:01:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:01:40,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:40,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 54 transitions, 347 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:40,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:40,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:40,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:41,387 INFO L124 PetriNetUnfolderBase]: 3172/5248 cut-off events. [2024-06-03 19:01:41,388 INFO L125 PetriNetUnfolderBase]: For 17906/17906 co-relation queries the response was YES. [2024-06-03 19:01:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14234 conditions, 5248 events. 3172/5248 cut-off events. For 17906/17906 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 31115 event pairs, 785 based on Foata normal form. 60/5307 useless extension candidates. Maximal degree in co-relation 14192. Up to 1328 conditions per place. [2024-06-03 19:01:41,408 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 109 selfloop transitions, 10 changer transitions 34/159 dead transitions. [2024-06-03 19:01:41,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 159 transitions, 940 flow [2024-06-03 19:01:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:01:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:01:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-03 19:01:41,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504 [2024-06-03 19:01:41,410 INFO L175 Difference]: Start difference. First operand has 99 places, 54 transitions, 347 flow. Second operand 10 states and 252 transitions. [2024-06-03 19:01:41,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 159 transitions, 940 flow [2024-06-03 19:01:41,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 159 transitions, 825 flow, removed 24 selfloop flow, removed 17 redundant places. [2024-06-03 19:01:41,430 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 249 flow [2024-06-03 19:01:41,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2024-06-03 19:01:41,431 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2024-06-03 19:01:41,431 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 249 flow [2024-06-03 19:01:41,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:41,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:41,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:41,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 19:01:41,432 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:41,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1551458862, now seen corresponding path program 2 times [2024-06-03 19:01:41,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:41,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499988394] [2024-06-03 19:01:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:41,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499988394] [2024-06-03 19:01:41,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499988394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:41,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:41,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:01:41,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689633976] [2024-06-03 19:01:41,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:41,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:01:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:01:41,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:01:41,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:41,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 249 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:41,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:41,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:41,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:41,924 INFO L124 PetriNetUnfolderBase]: 2044/3423 cut-off events. [2024-06-03 19:01:41,924 INFO L125 PetriNetUnfolderBase]: For 5857/5857 co-relation queries the response was YES. [2024-06-03 19:01:41,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8575 conditions, 3423 events. 2044/3423 cut-off events. For 5857/5857 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18677 event pairs, 738 based on Foata normal form. 60/3482 useless extension candidates. Maximal degree in co-relation 8545. Up to 1328 conditions per place. [2024-06-03 19:01:41,935 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 46 selfloop transitions, 4 changer transitions 67/123 dead transitions. [2024-06-03 19:01:41,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 123 transitions, 645 flow [2024-06-03 19:01:41,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:01:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:01:41,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-03 19:01:41,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925 [2024-06-03 19:01:41,937 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 249 flow. Second operand 8 states and 197 transitions. [2024-06-03 19:01:41,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 123 transitions, 645 flow [2024-06-03 19:01:41,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 123 transitions, 603 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-03 19:01:41,944 INFO L231 Difference]: Finished difference. Result has 79 places, 44 transitions, 178 flow [2024-06-03 19:01:41,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=44} [2024-06-03 19:01:41,945 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2024-06-03 19:01:41,945 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 44 transitions, 178 flow [2024-06-03 19:01:41,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:41,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:41,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:41,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 19:01:41,946 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:41,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 353550769, now seen corresponding path program 1 times [2024-06-03 19:01:41,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142604260] [2024-06-03 19:01:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:42,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:42,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142604260] [2024-06-03 19:01:42,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142604260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:42,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:42,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:01:42,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809428186] [2024-06-03 19:01:42,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:42,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:01:42,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:42,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:01:42,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:01:42,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:42,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 44 transitions, 178 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:42,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:42,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:42,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:42,355 INFO L124 PetriNetUnfolderBase]: 1676/2799 cut-off events. [2024-06-03 19:01:42,355 INFO L125 PetriNetUnfolderBase]: For 3654/3654 co-relation queries the response was YES. [2024-06-03 19:01:42,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6643 conditions, 2799 events. 1676/2799 cut-off events. For 3654/3654 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14672 event pairs, 77 based on Foata normal form. 60/2858 useless extension candidates. Maximal degree in co-relation 6616. Up to 985 conditions per place. [2024-06-03 19:01:42,364 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 74 selfloop transitions, 7 changer transitions 32/119 dead transitions. [2024-06-03 19:01:42,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 572 flow [2024-06-03 19:01:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 19:01:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 19:01:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-03 19:01:42,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428 [2024-06-03 19:01:42,366 INFO L175 Difference]: Start difference. First operand has 79 places, 44 transitions, 178 flow. Second operand 10 states and 214 transitions. [2024-06-03 19:01:42,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 572 flow [2024-06-03 19:01:42,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 119 transitions, 534 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-03 19:01:42,372 INFO L231 Difference]: Finished difference. Result has 68 places, 42 transitions, 149 flow [2024-06-03 19:01:42,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=149, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2024-06-03 19:01:42,373 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-03 19:01:42,373 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 149 flow [2024-06-03 19:01:42,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:42,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:01:42,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:42,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 19:01:42,374 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:01:42,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:01:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1713006435, now seen corresponding path program 2 times [2024-06-03 19:01:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:01:42,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386864237] [2024-06-03 19:01:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:01:42,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:01:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:01:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-03 19:01:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:01:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386864237] [2024-06-03 19:01:42,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386864237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:01:42,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:01:42,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 19:01:42,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332426952] [2024-06-03 19:01:42,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:01:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 19:01:42,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:01:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 19:01:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-03 19:01:42,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-06-03 19:01:42,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:42,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:01:42,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-06-03 19:01:42,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:01:42,708 INFO L124 PetriNetUnfolderBase]: 580/1032 cut-off events. [2024-06-03 19:01:42,709 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-06-03 19:01:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 1032 events. 580/1032 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4170 event pairs, 30 based on Foata normal form. 60/1091 useless extension candidates. Maximal degree in co-relation 2399. Up to 355 conditions per place. [2024-06-03 19:01:42,711 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2024-06-03 19:01:42,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 383 flow [2024-06-03 19:01:42,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 19:01:42,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 19:01:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-03 19:01:42,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 19:01:42,714 INFO L175 Difference]: Start difference. First operand has 68 places, 42 transitions, 149 flow. Second operand 8 states and 160 transitions. [2024-06-03 19:01:42,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 383 flow [2024-06-03 19:01:42,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 361 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-03 19:01:42,715 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-06-03 19:01:42,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-06-03 19:01:42,716 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-06-03 19:01:42,716 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-06-03 19:01:42,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:01:42,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-03 19:01:42,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-03 19:01:42,721 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-03 19:01:42,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-03 19:01:42,722 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-03 19:01:42,723 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-03 19:01:42,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 19:01:42,723 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-03 19:01:42,726 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:01:42,726 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:01:42,731 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-03 19:01:42,731 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-03 19:01:42,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:01:42 BasicIcfg [2024-06-03 19:01:42,732 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:01:42,732 INFO L158 Benchmark]: Toolchain (without parser) took 17435.82ms. Allocated memory was 195.0MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 121.2MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-03 19:01:42,733 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:42,733 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 166.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:01:42,733 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.49ms. Allocated memory is still 195.0MB. Free memory was 121.0MB in the beginning and 160.8MB in the end (delta: -39.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-06-03 19:01:42,733 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.12ms. Allocated memory is still 195.0MB. Free memory was 160.8MB in the beginning and 158.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:01:42,734 INFO L158 Benchmark]: Boogie Preprocessor took 34.28ms. Allocated memory is still 195.0MB. Free memory was 158.7MB in the beginning and 155.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:01:42,734 INFO L158 Benchmark]: RCFGBuilder took 650.76ms. Allocated memory is still 195.0MB. Free memory was 155.9MB in the beginning and 97.9MB in the end (delta: 58.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-03 19:01:42,734 INFO L158 Benchmark]: TraceAbstraction took 16371.60ms. Allocated memory was 195.0MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 97.2MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-03 19:01:42,735 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 73.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 166.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.49ms. Allocated memory is still 195.0MB. Free memory was 121.0MB in the beginning and 160.8MB in the end (delta: -39.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.12ms. Allocated memory is still 195.0MB. Free memory was 160.8MB in the beginning and 158.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.28ms. Allocated memory is still 195.0MB. Free memory was 158.7MB in the beginning and 155.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 650.76ms. Allocated memory is still 195.0MB. Free memory was 155.9MB in the beginning and 97.9MB in the end (delta: 58.0MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16371.60ms. Allocated memory was 195.0MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 97.2MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 154]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 155]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 156]: 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 7 procedures, 82 locations, 6 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: 16.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2078 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1944 mSDsluCounter, 262 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5280 IncrementalHoareTripleChecker+Invalid, 5392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 101 mSDtfsCounter, 5280 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=789occurred in iteration=10, InterpolantAutomatonStates: 118, 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, 1.3s InterpolantComputationTime, 283 NumberOfCodeBlocks, 283 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 267 ConstructedInterpolants, 0 QuantifiedInterpolants, 1035 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 19:01:42,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE