./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 [2024-06-04 14:30:15,742 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:30:15,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:30:15,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:30:15,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:30:15,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:30:15,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:30:15,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:30:15,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:30:15,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:30:15,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:30:15,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:30:15,809 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:30:15,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:30:15,811 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:30:15,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:30:15,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:30:15,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:30:15,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:30:15,815 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:30:15,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:30:15,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:30:15,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:30:15,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:30:15,816 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:30:15,816 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:30:15,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:30:15,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:30:15,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:30:15,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:30:15,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:30:15,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:30:15,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:30:15,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:30:15,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:30:15,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:30:15,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:30:15,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:30:15,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:30:15,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:30:15,821 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:30:15,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:30:15,821 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:30:15,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:30:16,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:30:16,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:30:16,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:30:16,065 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:30:16,084 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:30:16,085 INFO L431 ainManager$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 [2024-06-04 14:30:16,213 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:30:16,213 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:30:16,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-06-04 14:30:17,328 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:30:17,473 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:30:17,479 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-lamport.wvr.c [2024-06-04 14:30:17,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c09a8294d/ed0d451dd55b4e1eb593fa88e558e553/FLAG24bef71e0 [2024-06-04 14:30:17,498 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c09a8294d/ed0d451dd55b4e1eb593fa88e558e553 [2024-06-04 14:30:17,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:30:17,500 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:30:17,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:30:17,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:30:17,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:30:17,505 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:16" (1/2) ... [2024-06-04 14:30:17,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1a80b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:30:17, skipping insertion in model container [2024-06-04 14:30:17,506 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:16" (1/2) ... [2024-06-04 14:30:17,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11afd15c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:30:17, skipping insertion in model container [2024-06-04 14:30:17,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:30:17" (2/2) ... [2024-06-04 14:30:17,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1a80b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17, skipping insertion in model container [2024-06-04 14:30:17,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:30:17" (2/2) ... [2024-06-04 14:30:17,508 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:30:17,538 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:30:17,539 INFO L97 edCorrectnessWitness]: Location invariant before [L155-L155] (! multithreaded || -2147483647 <= n2) && (! multithreaded || -2147483647 <= n1) [2024-06-04 14:30:17,539 INFO L97 edCorrectnessWitness]: Location invariant before [L156-L156] (! multithreaded || -2147483647 <= n2) && (! multithreaded || -2147483647 <= n1) [2024-06-04 14:30:17,540 INFO L97 edCorrectnessWitness]: Location invariant before [L154-L154] (! multithreaded || -2147483647 <= n2) && (! multithreaded || -2147483647 <= n1) [2024-06-04 14:30:17,540 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:30:17,540 INFO L106 edCorrectnessWitness]: ghost_update [L153-L153] multithreaded = 1; [2024-06-04 14:30:17,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:30:17,702 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:30:17,711 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:30:17,770 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:30:17,782 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:30:17,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17 WrapperNode [2024-06-04 14:30:17,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:30:17,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:30:17,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:30:17,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:30:17,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,825 INFO L138 Inliner]: procedures = 24, calls = 75, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 236 [2024-06-04 14:30:17,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:30:17,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:30:17,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:30:17,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:30:17,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,843 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,855 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]. [2024-06-04 14:30:17,855 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,855 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,867 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:30:17,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:30:17,868 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:30:17,868 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:30:17,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (1/1) ... [2024-06-04 14:30:17,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:30:17,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:30:17,913 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) [2024-06-04 14:30:17,929 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 [2024-06-04 14:30:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:30:17,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 14:30:17,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 14:30:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 14:30:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 14:30:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 14:30:17,946 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 14:30:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:30:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 14:30:17,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 14:30:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 14:30:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:30:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:30:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 14:30:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:30:17,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:30:17,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 14:30:17,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 14:30:17,949 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:30:18,031 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:30:18,034 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:30:18,344 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:30:18,345 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:30:18,548 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:30:18,548 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-06-04 14:30:18,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:30:18 BoogieIcfgContainer [2024-06-04 14:30:18,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:30:18,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:30:18,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:30:18,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:30:18,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:30:16" (1/4) ... [2024-06-04 14:30:18,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507bfd07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:30:18, skipping insertion in model container [2024-06-04 14:30:18,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:30:17" (2/4) ... [2024-06-04 14:30:18,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507bfd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:30:18, skipping insertion in model container [2024-06-04 14:30:18,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:30:17" (3/4) ... [2024-06-04 14:30:18,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507bfd07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:30:18, skipping insertion in model container [2024-06-04 14:30:18,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:30:18" (4/4) ... [2024-06-04 14:30:18,560 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-06-04 14:30:18,573 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:30:18,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 14:30:18,574 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:30:18,612 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-04 14:30:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions, 127 flow [2024-06-04 14:30:18,687 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-06-04 14:30:18,688 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 14:30:18,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 1/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-06-04 14:30:18,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 53 transitions, 127 flow [2024-06-04 14:30:18,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-04 14:30:18,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:30:18,722 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;@544e8f0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:30:18,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 14:30:18,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:30:18,728 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-06-04 14:30:18,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:30:18,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:18,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:18,729 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)] === [2024-06-04 14:30:18,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash 564492746, now seen corresponding path program 1 times [2024-06-04 14:30:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:18,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679291801] [2024-06-04 14:30:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:30:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:19,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679291801] [2024-06-04 14:30:19,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679291801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:19,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:19,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:30:19,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112069269] [2024-06-04 14:30:19,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:19,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:30:19,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:30:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:30:19,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-06-04 14:30:19,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:19,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:19,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-06-04 14:30:19,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:19,650 INFO L124 PetriNetUnfolderBase]: 1948/3285 cut-off events. [2024-06-04 14:30:19,651 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-06-04 14:30:19,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6308 conditions, 3285 events. 1948/3285 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19880 event pairs, 855 based on Foata normal form. 5/3215 useless extension candidates. Maximal degree in co-relation 6289. Up to 2880 conditions per place. [2024-06-04 14:30:19,669 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 42 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-06-04 14:30:19,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 221 flow [2024-06-04 14:30:19,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:30:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:30:19,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-04 14:30:19,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226415094339622 [2024-06-04 14:30:19,679 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-06-04 14:30:19,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 221 flow [2024-06-04 14:30:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 14:30:19,684 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 119 flow [2024-06-04 14:30:19,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-04 14:30:19,704 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-04 14:30:19,704 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 119 flow [2024-06-04 14:30:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:19,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:19,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:19,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:30:19,705 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)] === [2024-06-04 14:30:19,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2121329352, now seen corresponding path program 1 times [2024-06-04 14:30:19,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:19,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593716762] [2024-06-04 14:30:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:30:19,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:19,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593716762] [2024-06-04 14:30:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593716762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:30:19,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379799091] [2024-06-04 14:30:19,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:19,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:30:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:30:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:30:19,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-04 14:30:19,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:19,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:19,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-04 14:30:19,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:20,377 INFO L124 PetriNetUnfolderBase]: 3302/5277 cut-off events. [2024-06-04 14:30:20,379 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2024-06-04 14:30:20,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11229 conditions, 5277 events. 3302/5277 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 31475 event pairs, 751 based on Foata normal form. 95/5357 useless extension candidates. Maximal degree in co-relation 11210. Up to 2744 conditions per place. [2024-06-04 14:30:20,403 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 80 selfloop transitions, 10 changer transitions 0/100 dead transitions. [2024-06-04 14:30:20,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 100 transitions, 432 flow [2024-06-04 14:30:20,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:30:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:30:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-04 14:30:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075471698113207 [2024-06-04 14:30:20,409 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 119 flow. Second operand 5 states and 161 transitions. [2024-06-04 14:30:20,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 100 transitions, 432 flow [2024-06-04 14:30:20,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:30:20,413 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 178 flow [2024-06-04 14:30:20,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-04 14:30:20,415 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2024-06-04 14:30:20,415 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 178 flow [2024-06-04 14:30:20,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:20,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:20,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:20,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:30:20,420 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)] === [2024-06-04 14:30:20,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:20,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1972304721, now seen corresponding path program 1 times [2024-06-04 14:30:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:20,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18951541] [2024-06-04 14:30:20,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:20,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:30:20,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:20,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18951541] [2024-06-04 14:30:20,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18951541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:20,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:20,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:30:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496162229] [2024-06-04 14:30:20,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:30:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:20,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:30:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:30:20,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-04 14:30:20,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:20,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:20,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-04 14:30:20,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:21,112 INFO L124 PetriNetUnfolderBase]: 3715/6087 cut-off events. [2024-06-04 14:30:21,112 INFO L125 PetriNetUnfolderBase]: For 2581/2677 co-relation queries the response was YES. [2024-06-04 14:30:21,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14224 conditions, 6087 events. 3715/6087 cut-off events. For 2581/2677 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 37602 event pairs, 1251 based on Foata normal form. 120/6163 useless extension candidates. Maximal degree in co-relation 14201. Up to 3051 conditions per place. [2024-06-04 14:30:21,147 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 77 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-04 14:30:21,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 101 transitions, 501 flow [2024-06-04 14:30:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:30:21,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:30:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2024-06-04 14:30:21,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5924528301886792 [2024-06-04 14:30:21,150 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 178 flow. Second operand 5 states and 157 transitions. [2024-06-04 14:30:21,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 101 transitions, 501 flow [2024-06-04 14:30:21,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 101 transitions, 490 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-04 14:30:21,157 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 250 flow [2024-06-04 14:30:21,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-04 14:30:21,159 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-04 14:30:21,159 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 250 flow [2024-06-04 14:30:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:21,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:21,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:30:21,160 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)] === [2024-06-04 14:30:21,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -892470717, now seen corresponding path program 1 times [2024-06-04 14:30:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258579431] [2024-06-04 14:30:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:30:21,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:21,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258579431] [2024-06-04 14:30:21,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258579431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:21,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:30:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098267414] [2024-06-04 14:30:21,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:21,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:30:21,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:30:21,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:30:21,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-06-04 14:30:21,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:21,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:21,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-06-04 14:30:21,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:21,576 INFO L124 PetriNetUnfolderBase]: 1803/3365 cut-off events. [2024-06-04 14:30:21,576 INFO L125 PetriNetUnfolderBase]: For 1384/1423 co-relation queries the response was YES. [2024-06-04 14:30:21,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7626 conditions, 3365 events. 1803/3365 cut-off events. For 1384/1423 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 22981 event pairs, 1764 based on Foata normal form. 2/3148 useless extension candidates. Maximal degree in co-relation 7597. Up to 2688 conditions per place. [2024-06-04 14:30:21,595 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 26 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-06-04 14:30:21,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 308 flow [2024-06-04 14:30:21,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:30:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:30:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-04 14:30:21,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-06-04 14:30:21,596 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 250 flow. Second operand 3 states and 95 transitions. [2024-06-04 14:30:21,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 308 flow [2024-06-04 14:30:21,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 296 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-04 14:30:21,603 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 250 flow [2024-06-04 14:30:21,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-04 14:30:21,603 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-04 14:30:21,604 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 250 flow [2024-06-04 14:30:21,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:21,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:21,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:21,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:30:21,604 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)] === [2024-06-04 14:30:21,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:21,605 INFO L85 PathProgramCache]: Analyzing trace with hash 688710247, now seen corresponding path program 1 times [2024-06-04 14:30:21,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:21,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419345182] [2024-06-04 14:30:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:21,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:21,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:21,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419345182] [2024-06-04 14:30:21,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419345182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:21,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:21,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:30:21,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496828833] [2024-06-04 14:30:21,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:21,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:30:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:30:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:30:21,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:21,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:21,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:21,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:21,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:22,679 INFO L124 PetriNetUnfolderBase]: 7076/11348 cut-off events. [2024-06-04 14:30:22,679 INFO L125 PetriNetUnfolderBase]: For 8299/8299 co-relation queries the response was YES. [2024-06-04 14:30:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27821 conditions, 11348 events. 7076/11348 cut-off events. For 8299/8299 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 76033 event pairs, 1731 based on Foata normal form. 270/11599 useless extension candidates. Maximal degree in co-relation 27800. Up to 2420 conditions per place. [2024-06-04 14:30:22,745 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 145 selfloop transitions, 26 changer transitions 0/180 dead transitions. [2024-06-04 14:30:22,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 180 transitions, 960 flow [2024-06-04 14:30:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:30:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:30:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 284 transitions. [2024-06-04 14:30:22,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953878406708596 [2024-06-04 14:30:22,750 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 250 flow. Second operand 9 states and 284 transitions. [2024-06-04 14:30:22,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 180 transitions, 960 flow [2024-06-04 14:30:22,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 180 transitions, 956 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-04 14:30:22,761 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 437 flow [2024-06-04 14:30:22,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=437, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2024-06-04 14:30:22,763 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-04 14:30:22,764 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 437 flow [2024-06-04 14:30:22,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:22,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:22,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:30:22,765 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)] === [2024-06-04 14:30:22,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1716942801, now seen corresponding path program 2 times [2024-06-04 14:30:22,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:22,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879141314] [2024-06-04 14:30:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:22,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:22,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879141314] [2024-06-04 14:30:22,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879141314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:22,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:22,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:30:22,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211425110] [2024-06-04 14:30:22,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:22,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:30:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:22,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:30:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:30:22,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:22,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 437 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:22,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:22,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:22,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:24,428 INFO L124 PetriNetUnfolderBase]: 10240/16299 cut-off events. [2024-06-04 14:30:24,428 INFO L125 PetriNetUnfolderBase]: For 34841/34844 co-relation queries the response was YES. [2024-06-04 14:30:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45840 conditions, 16299 events. 10240/16299 cut-off events. For 34841/34844 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 114818 event pairs, 3288 based on Foata normal form. 200/16466 useless extension candidates. Maximal degree in co-relation 45809. Up to 10404 conditions per place. [2024-06-04 14:30:24,510 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 173 selfloop transitions, 23 changer transitions 1/206 dead transitions. [2024-06-04 14:30:24,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 206 transitions, 1349 flow [2024-06-04 14:30:24,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:30:24,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:30:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 320 transitions. [2024-06-04 14:30:24,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548885077186964 [2024-06-04 14:30:24,511 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 437 flow. Second operand 11 states and 320 transitions. [2024-06-04 14:30:24,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 206 transitions, 1349 flow [2024-06-04 14:30:24,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 206 transitions, 1326 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-04 14:30:24,699 INFO L231 Difference]: Finished difference. Result has 97 places, 88 transitions, 711 flow [2024-06-04 14:30:24,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=711, PETRI_PLACES=97, PETRI_TRANSITIONS=88} [2024-06-04 14:30:24,700 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-04 14:30:24,700 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 88 transitions, 711 flow [2024-06-04 14:30:24,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:24,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:24,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:24,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:30:24,701 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)] === [2024-06-04 14:30:24,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1037805759, now seen corresponding path program 3 times [2024-06-04 14:30:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:24,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013281869] [2024-06-04 14:30:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:24,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:24,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013281869] [2024-06-04 14:30:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013281869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:24,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:24,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:30:24,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440051489] [2024-06-04 14:30:24,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:24,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:30:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:24,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:30:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:30:24,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:24,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 88 transitions, 711 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:24,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:24,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:24,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:26,594 INFO L124 PetriNetUnfolderBase]: 11387/18245 cut-off events. [2024-06-04 14:30:26,594 INFO L125 PetriNetUnfolderBase]: For 71204/71204 co-relation queries the response was YES. [2024-06-04 14:30:26,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54634 conditions, 18245 events. 11387/18245 cut-off events. For 71204/71204 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 132634 event pairs, 3685 based on Foata normal form. 198/18411 useless extension candidates. Maximal degree in co-relation 54594. Up to 12232 conditions per place. [2024-06-04 14:30:26,709 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 157 selfloop transitions, 21 changer transitions 3/190 dead transitions. [2024-06-04 14:30:26,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 190 transitions, 1422 flow [2024-06-04 14:30:26,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:30:26,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:30:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-06-04 14:30:26,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723270440251572 [2024-06-04 14:30:26,711 INFO L175 Difference]: Start difference. First operand has 97 places, 88 transitions, 711 flow. Second operand 9 states and 273 transitions. [2024-06-04 14:30:26,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 190 transitions, 1422 flow [2024-06-04 14:30:26,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 190 transitions, 1399 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-04 14:30:26,904 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 817 flow [2024-06-04 14:30:26,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=817, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2024-06-04 14:30:26,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-04 14:30:26,905 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 817 flow [2024-06-04 14:30:26,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:26,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:26,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:26,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:30:26,906 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)] === [2024-06-04 14:30:26,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 746890727, now seen corresponding path program 4 times [2024-06-04 14:30:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417807493] [2024-06-04 14:30:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:26,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417807493] [2024-06-04 14:30:26,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417807493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:26,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:30:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086489442] [2024-06-04 14:30:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:26,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:30:26,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:26,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:30:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:30:26,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:26,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 817 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:26,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:26,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:26,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:28,628 INFO L124 PetriNetUnfolderBase]: 10713/17253 cut-off events. [2024-06-04 14:30:28,628 INFO L125 PetriNetUnfolderBase]: For 94627/94627 co-relation queries the response was YES. [2024-06-04 14:30:28,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53467 conditions, 17253 events. 10713/17253 cut-off events. For 94627/94627 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 125154 event pairs, 3459 based on Foata normal form. 210/17431 useless extension candidates. Maximal degree in co-relation 53421. Up to 12206 conditions per place. [2024-06-04 14:30:28,736 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 172 selfloop transitions, 18 changer transitions 7/206 dead transitions. [2024-06-04 14:30:28,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 206 transitions, 1509 flow [2024-06-04 14:30:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-04 14:30:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-04 14:30:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 315 transitions. [2024-06-04 14:30:28,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403087478559176 [2024-06-04 14:30:28,738 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 817 flow. Second operand 11 states and 315 transitions. [2024-06-04 14:30:28,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 206 transitions, 1509 flow [2024-06-04 14:30:28,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 206 transitions, 1444 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 14:30:28,967 INFO L231 Difference]: Finished difference. Result has 117 places, 87 transitions, 740 flow [2024-06-04 14:30:28,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=740, PETRI_PLACES=117, PETRI_TRANSITIONS=87} [2024-06-04 14:30:28,968 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-04 14:30:28,968 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 87 transitions, 740 flow [2024-06-04 14:30:28,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:28,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:28,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:28,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:30:28,969 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)] === [2024-06-04 14:30:28,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash 279795853, now seen corresponding path program 5 times [2024-06-04 14:30:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:28,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137394832] [2024-06-04 14:30:28,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:28,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137394832] [2024-06-04 14:30:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137394832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:29,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:29,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:30:29,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964657000] [2024-06-04 14:30:29,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:29,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:30:29,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:30:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:30:29,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:29,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 87 transitions, 740 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:29,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:29,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:29,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:30,539 INFO L124 PetriNetUnfolderBase]: 9646/15879 cut-off events. [2024-06-04 14:30:30,539 INFO L125 PetriNetUnfolderBase]: For 85808/85817 co-relation queries the response was YES. [2024-06-04 14:30:30,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46249 conditions, 15879 events. 9646/15879 cut-off events. For 85808/85817 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 116203 event pairs, 1623 based on Foata normal form. 276/16141 useless extension candidates. Maximal degree in co-relation 46202. Up to 4430 conditions per place. [2024-06-04 14:30:30,717 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 141 selfloop transitions, 43 changer transitions 0/193 dead transitions. [2024-06-04 14:30:30,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 193 transitions, 1514 flow [2024-06-04 14:30:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:30:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:30:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-06-04 14:30:30,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-04 14:30:30,719 INFO L175 Difference]: Start difference. First operand has 117 places, 87 transitions, 740 flow. Second operand 9 states and 279 transitions. [2024-06-04 14:30:30,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 193 transitions, 1514 flow [2024-06-04 14:30:31,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 193 transitions, 1432 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-04 14:30:31,021 INFO L231 Difference]: Finished difference. Result has 116 places, 90 transitions, 818 flow [2024-06-04 14:30:31,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=818, PETRI_PLACES=116, PETRI_TRANSITIONS=90} [2024-06-04 14:30:31,022 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-04 14:30:31,022 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 90 transitions, 818 flow [2024-06-04 14:30:31,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:31,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:31,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:31,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:30:31,022 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)] === [2024-06-04 14:30:31,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1676281215, now seen corresponding path program 6 times [2024-06-04 14:30:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:31,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418110538] [2024-06-04 14:30:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:31,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:31,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418110538] [2024-06-04 14:30:31,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418110538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:31,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 14:30:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599403654] [2024-06-04 14:30:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:31,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:30:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:30:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:30:31,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:31,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 90 transitions, 818 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:31,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:31,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:31,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:32,362 INFO L124 PetriNetUnfolderBase]: 9090/14855 cut-off events. [2024-06-04 14:30:32,362 INFO L125 PetriNetUnfolderBase]: For 73752/73761 co-relation queries the response was YES. [2024-06-04 14:30:32,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43555 conditions, 14855 events. 9090/14855 cut-off events. For 73752/73761 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 106859 event pairs, 2587 based on Foata normal form. 156/14965 useless extension candidates. Maximal degree in co-relation 43508. Up to 10020 conditions per place. [2024-06-04 14:30:32,462 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 151 selfloop transitions, 17 changer transitions 3/180 dead transitions. [2024-06-04 14:30:32,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 180 transitions, 1416 flow [2024-06-04 14:30:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 14:30:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 14:30:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 261 transitions. [2024-06-04 14:30:32,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-04 14:30:32,464 INFO L175 Difference]: Start difference. First operand has 116 places, 90 transitions, 818 flow. Second operand 9 states and 261 transitions. [2024-06-04 14:30:32,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 180 transitions, 1416 flow [2024-06-04 14:30:32,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 180 transitions, 1321 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 14:30:32,601 INFO L231 Difference]: Finished difference. Result has 120 places, 88 transitions, 745 flow [2024-06-04 14:30:32,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=120, PETRI_TRANSITIONS=88} [2024-06-04 14:30:32,601 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-04 14:30:32,602 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 88 transitions, 745 flow [2024-06-04 14:30:32,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:32,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:32,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:30:32,602 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)] === [2024-06-04 14:30:32,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1318744014, now seen corresponding path program 1 times [2024-06-04 14:30:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:32,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670434469] [2024-06-04 14:30:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:32,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:32,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670434469] [2024-06-04 14:30:32,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670434469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:32,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:32,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:30:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517618835] [2024-06-04 14:30:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:30:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:32,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:30:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:30:32,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-04 14:30:32,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 88 transitions, 745 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:32,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:32,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-04 14:30:32,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:33,797 INFO L124 PetriNetUnfolderBase]: 8246/13681 cut-off events. [2024-06-04 14:30:33,797 INFO L125 PetriNetUnfolderBase]: For 62953/63151 co-relation queries the response was YES. [2024-06-04 14:30:33,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37705 conditions, 13681 events. 8246/13681 cut-off events. For 62953/63151 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 99851 event pairs, 2075 based on Foata normal form. 143/13723 useless extension candidates. Maximal degree in co-relation 37658. Up to 8178 conditions per place. [2024-06-04 14:30:33,854 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 65 selfloop transitions, 22 changer transitions 11/115 dead transitions. [2024-06-04 14:30:33,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 115 transitions, 1061 flow [2024-06-04 14:30:33,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:30:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:30:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-04 14:30:33,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-06-04 14:30:33,868 INFO L175 Difference]: Start difference. First operand has 120 places, 88 transitions, 745 flow. Second operand 4 states and 128 transitions. [2024-06-04 14:30:33,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 115 transitions, 1061 flow [2024-06-04 14:30:33,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 1027 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-04 14:30:33,960 INFO L231 Difference]: Finished difference. Result has 115 places, 76 transitions, 633 flow [2024-06-04 14:30:33,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=115, PETRI_TRANSITIONS=76} [2024-06-04 14:30:33,963 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-04 14:30:33,963 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 76 transitions, 633 flow [2024-06-04 14:30:33,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:33,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:33,964 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] [2024-06-04 14:30:33,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:30:33,964 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)] === [2024-06-04 14:30:33,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash 69082115, now seen corresponding path program 1 times [2024-06-04 14:30:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583289565] [2024-06-04 14:30:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583289565] [2024-06-04 14:30:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583289565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:34,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:30:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919436115] [2024-06-04 14:30:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:34,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:30:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:34,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:30:34,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:30:34,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-04 14:30:34,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 76 transitions, 633 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:34,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:34,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-04 14:30:34,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:34,701 INFO L124 PetriNetUnfolderBase]: 5627/9410 cut-off events. [2024-06-04 14:30:34,701 INFO L125 PetriNetUnfolderBase]: For 48277/48401 co-relation queries the response was YES. [2024-06-04 14:30:34,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25481 conditions, 9410 events. 5627/9410 cut-off events. For 48277/48401 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 65782 event pairs, 1393 based on Foata normal form. 142/9493 useless extension candidates. Maximal degree in co-relation 25433. Up to 5214 conditions per place. [2024-06-04 14:30:34,735 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 60 selfloop transitions, 10 changer transitions 22/107 dead transitions. [2024-06-04 14:30:34,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 951 flow [2024-06-04 14:30:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:30:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:30:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-04 14:30:34,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2024-06-04 14:30:34,736 INFO L175 Difference]: Start difference. First operand has 115 places, 76 transitions, 633 flow. Second operand 4 states and 130 transitions. [2024-06-04 14:30:34,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 951 flow [2024-06-04 14:30:34,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 828 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-04 14:30:34,781 INFO L231 Difference]: Finished difference. Result has 102 places, 57 transitions, 353 flow [2024-06-04 14:30:34,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=102, PETRI_TRANSITIONS=57} [2024-06-04 14:30:34,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-04 14:30:34,782 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 57 transitions, 353 flow [2024-06-04 14:30:34,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:34,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:34,782 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, 1, 1] [2024-06-04 14:30:34,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:30:34,783 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)] === [2024-06-04 14:30:34,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:34,783 INFO L85 PathProgramCache]: Analyzing trace with hash -685809385, now seen corresponding path program 1 times [2024-06-04 14:30:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102195135] [2024-06-04 14:30:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:34,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102195135] [2024-06-04 14:30:34,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102195135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:34,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:34,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:30:34,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239518345] [2024-06-04 14:30:34,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:30:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:34,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:30:34,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:30:34,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:34,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 57 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:34,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:34,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:34,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:35,513 INFO L124 PetriNetUnfolderBase]: 3172/5265 cut-off events. [2024-06-04 14:30:35,513 INFO L125 PetriNetUnfolderBase]: For 17926/17926 co-relation queries the response was YES. [2024-06-04 14:30:35,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 5265 events. 3172/5265 cut-off events. For 17926/17926 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31975 event pairs, 785 based on Foata normal form. 60/5306 useless extension candidates. Maximal degree in co-relation 14209. Up to 1328 conditions per place. [2024-06-04 14:30:35,531 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 109 selfloop transitions, 10 changer transitions 34/162 dead transitions. [2024-06-04 14:30:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 162 transitions, 946 flow [2024-06-04 14:30:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:30:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:30:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-06-04 14:30:35,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5320754716981132 [2024-06-04 14:30:35,533 INFO L175 Difference]: Start difference. First operand has 102 places, 57 transitions, 353 flow. Second operand 10 states and 282 transitions. [2024-06-04 14:30:35,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 162 transitions, 946 flow [2024-06-04 14:30:35,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 162 transitions, 831 flow, removed 24 selfloop flow, removed 17 redundant places. [2024-06-04 14:30:35,551 INFO L231 Difference]: Finished difference. Result has 89 places, 53 transitions, 255 flow [2024-06-04 14:30:35,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=255, PETRI_PLACES=89, PETRI_TRANSITIONS=53} [2024-06-04 14:30:35,551 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-04 14:30:35,551 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 53 transitions, 255 flow [2024-06-04 14:30:35,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:35,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:35,552 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, 1, 1] [2024-06-04 14:30:35,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:30:35,552 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)] === [2024-06-04 14:30:35,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 795996583, now seen corresponding path program 2 times [2024-06-04 14:30:35,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:35,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605259787] [2024-06-04 14:30:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:35,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:35,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605259787] [2024-06-04 14:30:35,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605259787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:35,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:30:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783625022] [2024-06-04 14:30:35,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:35,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:30:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:35,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:30:35,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:30:35,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:35,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 53 transitions, 255 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:35,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:35,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:35,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:36,065 INFO L124 PetriNetUnfolderBase]: 2044/3440 cut-off events. [2024-06-04 14:30:36,066 INFO L125 PetriNetUnfolderBase]: For 5897/5897 co-relation queries the response was YES. [2024-06-04 14:30:36,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8592 conditions, 3440 events. 2044/3440 cut-off events. For 5897/5897 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 19290 event pairs, 738 based on Foata normal form. 60/3481 useless extension candidates. Maximal degree in co-relation 8562. Up to 1328 conditions per place. [2024-06-04 14:30:36,077 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 46 selfloop transitions, 4 changer transitions 67/126 dead transitions. [2024-06-04 14:30:36,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 126 transitions, 651 flow [2024-06-04 14:30:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:30:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:30:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-04 14:30:36,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212264150943396 [2024-06-04 14:30:36,079 INFO L175 Difference]: Start difference. First operand has 89 places, 53 transitions, 255 flow. Second operand 8 states and 221 transitions. [2024-06-04 14:30:36,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 126 transitions, 651 flow [2024-06-04 14:30:36,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 609 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-04 14:30:36,087 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 184 flow [2024-06-04 14:30:36,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2024-06-04 14:30:36,088 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-04 14:30:36,088 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 184 flow [2024-06-04 14:30:36,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:36,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:36,089 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, 1, 1] [2024-06-04 14:30:36,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:30:36,089 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)] === [2024-06-04 14:30:36,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:36,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2137263931, now seen corresponding path program 1 times [2024-06-04 14:30:36,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:36,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783482360] [2024-06-04 14:30:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:36,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783482360] [2024-06-04 14:30:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783482360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:36,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:36,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:30:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643727220] [2024-06-04 14:30:36,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:30:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:36,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:30:36,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:30:36,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:36,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:36,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:36,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:36,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:36,513 INFO L124 PetriNetUnfolderBase]: 1676/2802 cut-off events. [2024-06-04 14:30:36,514 INFO L125 PetriNetUnfolderBase]: For 3654/3654 co-relation queries the response was YES. [2024-06-04 14:30:36,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 2802 events. 1676/2802 cut-off events. For 3654/3654 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 15007 event pairs, 77 based on Foata normal form. 60/2859 useless extension candidates. Maximal degree in co-relation 6619. Up to 985 conditions per place. [2024-06-04 14:30:36,522 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 74 selfloop transitions, 7 changer transitions 32/122 dead transitions. [2024-06-04 14:30:36,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 578 flow [2024-06-04 14:30:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 14:30:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 14:30:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-04 14:30:36,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46037735849056605 [2024-06-04 14:30:36,523 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 184 flow. Second operand 10 states and 244 transitions. [2024-06-04 14:30:36,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 578 flow [2024-06-04 14:30:36,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 122 transitions, 540 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-04 14:30:36,528 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 155 flow [2024-06-04 14:30:36,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=155, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2024-06-04 14:30:36,528 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-04 14:30:36,529 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 155 flow [2024-06-04 14:30:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:36,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:30:36,529 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, 1, 1] [2024-06-04 14:30:36,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:30:36,529 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)] === [2024-06-04 14:30:36,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:30:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash -995109911, now seen corresponding path program 2 times [2024-06-04 14:30:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:30:36,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031806780] [2024-06-04 14:30:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:30:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:30:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:30:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 14:30:36,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:30:36,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031806780] [2024-06-04 14:30:36,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031806780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:30:36,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:30:36,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 14:30:36,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240966823] [2024-06-04 14:30:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:30:36,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 14:30:36,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:30:36,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 14:30:36,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 14:30:36,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-04 14:30:36,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 155 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:36,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:30:36,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-04 14:30:36,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:30:36,905 INFO L124 PetriNetUnfolderBase]: 580/1035 cut-off events. [2024-06-04 14:30:36,906 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-06-04 14:30:36,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 1035 events. 580/1035 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4316 event pairs, 30 based on Foata normal form. 60/1092 useless extension candidates. Maximal degree in co-relation 2402. Up to 355 conditions per place. [2024-06-04 14:30:36,908 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2024-06-04 14:30:36,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 389 flow [2024-06-04 14:30:36,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:30:36,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:30:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-04 14:30:36,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4339622641509434 [2024-06-04 14:30:36,911 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 155 flow. Second operand 8 states and 184 transitions. [2024-06-04 14:30:36,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 389 flow [2024-06-04 14:30:36,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 367 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-04 14:30:36,912 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2024-06-04 14:30:36,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2024-06-04 14:30:36,913 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-04 14:30:36,913 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2024-06-04 14:30:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:30:36,915 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-04 14:30:36,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-04 14:30:36,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-04 14:30:36,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-04 14:30:36,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-04 14:30:36,916 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-04 14:30:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:30:36,917 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-04 14:30:36,920 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:30:36,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:30:36,924 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-04 14:30:36,925 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-04 14:30:36,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:30:36 BasicIcfg [2024-06-04 14:30:36,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:30:36,926 INFO L158 Benchmark]: Toolchain (without parser) took 19426.20ms. Allocated memory was 115.3MB in the beginning and 10.2GB in the end (delta: 10.1GB). Free memory was 44.9MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 953.9MB. Max. memory is 16.1GB. [2024-06-04 14:30:36,926 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 115.3MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:30:36,926 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:30:36,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.13ms. Allocated memory is still 115.3MB. Free memory was 44.7MB in the beginning and 75.2MB in the end (delta: -30.5MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-06-04 14:30:36,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.48ms. Allocated memory is still 115.3MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:30:36,927 INFO L158 Benchmark]: Boogie Preprocessor took 40.57ms. Allocated memory is still 115.3MB. Free memory was 72.9MB in the beginning and 70.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:30:36,927 INFO L158 Benchmark]: RCFGBuilder took 681.55ms. Allocated memory is still 115.3MB. Free memory was 70.2MB in the beginning and 51.8MB in the end (delta: 18.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2024-06-04 14:30:36,927 INFO L158 Benchmark]: TraceAbstraction took 18373.24ms. Allocated memory was 115.3MB in the beginning and 10.2GB in the end (delta: 10.1GB). Free memory was 51.2MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 958.8MB. Max. memory is 16.1GB. [2024-06-04 14:30:36,928 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 0.11ms. Allocated memory is still 115.3MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.13ms. Allocated memory is still 115.3MB. Free memory was 44.7MB in the beginning and 75.2MB in the end (delta: -30.5MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.48ms. Allocated memory is still 115.3MB. Free memory was 74.9MB in the beginning and 72.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.57ms. Allocated memory is still 115.3MB. Free memory was 72.9MB in the beginning and 70.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 681.55ms. Allocated memory is still 115.3MB. Free memory was 70.2MB in the beginning and 51.8MB in the end (delta: 18.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18373.24ms. Allocated memory was 115.3MB in the beginning and 10.2GB in the end (delta: 10.1GB). Free memory was 51.2MB in the beginning and 9.2GB in the end (delta: -9.1GB). Peak memory consumption was 958.8MB. 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, 88 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: 18.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2120 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2005 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 198 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5285 IncrementalHoareTripleChecker+Invalid, 5390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 105 mSDtfsCounter, 5285 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=818occurred in iteration=9, 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, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 1145 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! [2024-06-04 14:30:36,951 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