./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/chl-match-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/chl-match-trans.wvr.c ./goblint.2024-05-07_14-17-48.files/protection/chl-match-trans.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:53:00,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:53:00,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:53:00,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:53:00,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:53:00,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:53:00,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:53:00,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:53:00,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:53:00,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:53:00,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:53:00,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:53:00,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:53:00,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:53:00,932 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:53:00,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:53:00,932 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:53:00,932 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:53:00,933 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:53:00,933 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:53:00,933 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:53:00,933 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:53:00,933 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:53:00,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:53:00,934 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:53:00,934 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:53:00,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:53:00,934 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:53:00,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:53:00,935 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:53:00,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:53:00,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:53:00,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:53:00,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:53:00,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:53:00,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:53:00,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:53:00,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:53:00,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:53:00,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:53:00,938 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:53:00,938 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:53:00,938 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:53:00,938 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:53:01,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:53:01,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:53:01,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:53:01,199 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:53:01,199 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:53:01,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/chl-match-trans.wvr.yml/witness.yml [2024-05-12 12:53:01,273 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:53:01,273 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:53:01,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2024-05-12 12:53:02,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:53:02,525 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:53:02,525 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c [2024-05-12 12:53:02,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060ce0c8f/574d03263fea44a7becf4326ba3ec532/FLAG6b394877c [2024-05-12 12:53:02,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060ce0c8f/574d03263fea44a7becf4326ba3ec532 [2024-05-12 12:53:02,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:53:02,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:53:02,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:53:02,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:53:02,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:53:02,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:01" (1/2) ... [2024-05-12 12:53:02,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9f974b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:53:02, skipping insertion in model container [2024-05-12 12:53:02,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:01" (1/2) ... [2024-05-12 12:53:02,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7cf3382c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:53:02, skipping insertion in model container [2024-05-12 12:53:02,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:53:02" (2/2) ... [2024-05-12 12:53:02,550 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9f974b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02, skipping insertion in model container [2024-05-12 12:53:02,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:53:02" (2/2) ... [2024-05-12 12:53:02,550 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:53:02,561 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:53:02,562 INFO L97 edCorrectnessWitness]: Location invariant before [L82-L82] ((! multithreaded || ((((-128 <= result_11 && -1 <= result_11) && result_11 <= 1) && result_11 <= 127) && ((result_11 == -1 || result_11 == 0) || result_11 == 1))) && (! multithreaded || ((((-128 <= result_10 && -1 <= result_10) && result_10 <= 1) && result_10 <= 127) && ((result_10 == -1 || result_10 == 0) || result_10 == 1)))) && (! multithreaded || ((((-128 <= result_9 && -1 <= result_9) && result_9 <= 1) && result_9 <= 127) && ((result_9 == -1 || result_9 == 0) || result_9 == 1))) [2024-05-12 12:53:02,562 INFO L97 edCorrectnessWitness]: Location invariant before [L81-L81] ((! multithreaded || ((((-128 <= result_11 && -1 <= result_11) && result_11 <= 1) && result_11 <= 127) && ((result_11 == -1 || result_11 == 0) || result_11 == 1))) && (! multithreaded || ((((-128 <= result_10 && -1 <= result_10) && result_10 <= 1) && result_10 <= 127) && ((result_10 == -1 || result_10 == 0) || result_10 == 1)))) && (! multithreaded || ((((-128 <= result_9 && -1 <= result_9) && result_9 <= 1) && result_9 <= 127) && ((result_9 == -1 || result_9 == 0) || result_9 == 1))) [2024-05-12 12:53:02,562 INFO L97 edCorrectnessWitness]: Location invariant before [L83-L83] ((! multithreaded || ((((-128 <= result_11 && -1 <= result_11) && result_11 <= 1) && result_11 <= 127) && ((result_11 == -1 || result_11 == 0) || result_11 == 1))) && (! multithreaded || ((((-128 <= result_10 && -1 <= result_10) && result_10 <= 1) && result_10 <= 127) && ((result_10 == -1 || result_10 == 0) || result_10 == 1)))) && (! multithreaded || ((((-128 <= result_9 && -1 <= result_9) && result_9 <= 1) && result_9 <= 127) && ((result_9 == -1 || result_9 == 0) || result_9 == 1))) [2024-05-12 12:53:02,563 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:53:02,563 INFO L106 edCorrectnessWitness]: ghost_update [L80-L80] multithreaded = 1; [2024-05-12 12:53:02,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:53:02,692 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2954,2967] [2024-05-12 12:53:02,708 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:53:02,717 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:53:02,788 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-trans.wvr.c[2954,2967] [2024-05-12 12:53:02,789 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:53:02,802 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:53:02,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02 WrapperNode [2024-05-12 12:53:02,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:53:02,805 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:53:02,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:53:02,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:53:02,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,872 INFO L138 Inliner]: procedures = 23, calls = 33, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 216 [2024-05-12 12:53:02,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:53:02,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:53:02,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:53:02,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:53:02,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,898 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,919 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 12:53:02,932 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:53:02,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:53:02,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:53:02,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:53:02,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (1/1) ... [2024-05-12 12:53:02,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:53:02,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:53:03,010 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) [2024-05-12 12:53:03,050 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 [2024-05-12 12:53:03,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:53:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 12:53:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 12:53:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 12:53:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 12:53:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-05-12 12:53:03,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-05-12 12:53:03,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:53:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:53:03,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:53:03,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:53:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:53:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:53:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:53:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:53:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:53:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:53:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:53:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:53:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:53:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:53:03,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:53:03,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:53:03,085 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:53:03,224 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:53:03,226 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:53:03,554 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:53:03,554 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:53:03,809 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:53:03,810 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:53:03,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:53:03 BoogieIcfgContainer [2024-05-12 12:53:03,811 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:53:03,813 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:53:03,813 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:53:03,816 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:53:03,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:53:01" (1/4) ... [2024-05-12 12:53:03,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204b78ca and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:53:03, skipping insertion in model container [2024-05-12 12:53:03,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:53:02" (2/4) ... [2024-05-12 12:53:03,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204b78ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:53:03, skipping insertion in model container [2024-05-12 12:53:03,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:53:02" (3/4) ... [2024-05-12 12:53:03,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204b78ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:53:03, skipping insertion in model container [2024-05-12 12:53:03,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:53:03" (4/4) ... [2024-05-12 12:53:03,820 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-trans.wvr.c [2024-05-12 12:53:03,834 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:53:03,834 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 12:53:03,834 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:53:03,879 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-12 12:53:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 79 flow [2024-05-12 12:53:03,943 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-05-12 12:53:03,943 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-05-12 12:53:03,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 26 events. 0/26 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-05-12 12:53:03,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 29 transitions, 79 flow [2024-05-12 12:53:03,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 68 flow [2024-05-12 12:53:03,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:53:03,966 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;@65c2c823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:53:03,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 12:53:03,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:53:03,989 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 12:53:03,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:53:03,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:03,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:53:03,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:03,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1643248724, now seen corresponding path program 1 times [2024-05-12 12:53:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:04,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789866955] [2024-05-12 12:53:04,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:04,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:04,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:04,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789866955] [2024-05-12 12:53:04,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789866955] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:04,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:04,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:53:04,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772773504] [2024-05-12 12:53:04,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:04,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:53:04,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:53:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:53:04,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:04,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-05-12 12:53:04,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:04,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:04,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:04,522 INFO L124 PetriNetUnfolderBase]: 65/136 cut-off events. [2024-05-12 12:53:04,522 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-05-12 12:53:04,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 136 events. 65/136 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 364 event pairs, 19 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 238. Up to 124 conditions per place. [2024-05-12 12:53:04,528 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 31 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-05-12 12:53:04,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 166 flow [2024-05-12 12:53:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:04,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-05-12 12:53:04,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-05-12 12:53:04,539 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 68 flow. Second operand 3 states and 50 transitions. [2024-05-12 12:53:04,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 166 flow [2024-05-12 12:53:04,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-05-12 12:53:04,544 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 86 flow [2024-05-12 12:53:04,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2024-05-12 12:53:04,548 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-05-12 12:53:04,549 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 86 flow [2024-05-12 12:53:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-05-12 12:53:04,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:04,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:04,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:53:04,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:04,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash 598898140, now seen corresponding path program 1 times [2024-05-12 12:53:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:04,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891106352] [2024-05-12 12:53:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:04,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891106352] [2024-05-12 12:53:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891106352] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:04,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839869873] [2024-05-12 12:53:04,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:04,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:04,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:04,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-05-12 12:53:04,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:04,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:04,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:04,922 INFO L124 PetriNetUnfolderBase]: 62/130 cut-off events. [2024-05-12 12:53:04,923 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-05-12 12:53:04,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 130 events. 62/130 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 325 event pairs, 12 based on Foata normal form. 3/133 useless extension candidates. Maximal degree in co-relation 157. Up to 99 conditions per place. [2024-05-12 12:53:04,925 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 30 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-05-12 12:53:04,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 176 flow [2024-05-12 12:53:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-05-12 12:53:04,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-05-12 12:53:04,930 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 86 flow. Second operand 3 states and 48 transitions. [2024-05-12 12:53:04,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 176 flow [2024-05-12 12:53:04,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:04,938 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 109 flow [2024-05-12 12:53:04,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-05-12 12:53:04,939 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-05-12 12:53:04,939 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 109 flow [2024-05-12 12:53:04,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-05-12 12:53:04,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:04,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:04,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:53:04,940 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:04,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash 470380774, now seen corresponding path program 1 times [2024-05-12 12:53:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:04,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691325505] [2024-05-12 12:53:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:05,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691325505] [2024-05-12 12:53:05,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691325505] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:05,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:05,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:05,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686675380] [2024-05-12 12:53:05,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:05,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:05,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:05,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:05,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-05-12 12:53:05,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:05,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:05,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:05,250 INFO L124 PetriNetUnfolderBase]: 59/125 cut-off events. [2024-05-12 12:53:05,250 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-05-12 12:53:05,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 125 events. 59/125 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 302 event pairs, 14 based on Foata normal form. 2/127 useless extension candidates. Maximal degree in co-relation 118. Up to 102 conditions per place. [2024-05-12 12:53:05,253 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-05-12 12:53:05,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 39 transitions, 213 flow [2024-05-12 12:53:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:05,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-05-12 12:53:05,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-05-12 12:53:05,256 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 109 flow. Second operand 3 states and 48 transitions. [2024-05-12 12:53:05,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 39 transitions, 213 flow [2024-05-12 12:53:05,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:05,259 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 137 flow [2024-05-12 12:53:05,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2024-05-12 12:53:05,261 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2024-05-12 12:53:05,261 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 137 flow [2024-05-12 12:53:05,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-05-12 12:53:05,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:05,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:05,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:53:05,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:05,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1696902148, now seen corresponding path program 1 times [2024-05-12 12:53:05,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:05,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030498358] [2024-05-12 12:53:05,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:05,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:05,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030498358] [2024-05-12 12:53:05,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030498358] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:05,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243969710] [2024-05-12 12:53:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:05,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:05,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:05,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-05-12 12:53:05,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:05,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:05,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:05,511 INFO L124 PetriNetUnfolderBase]: 58/122 cut-off events. [2024-05-12 12:53:05,512 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-05-12 12:53:05,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 122 events. 58/122 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 266 event pairs, 20 based on Foata normal form. 2/124 useless extension candidates. Maximal degree in co-relation 185. Up to 70 conditions per place. [2024-05-12 12:53:05,513 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-05-12 12:53:05,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 213 flow [2024-05-12 12:53:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-05-12 12:53:05,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-05-12 12:53:05,515 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 137 flow. Second operand 3 states and 44 transitions. [2024-05-12 12:53:05,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 213 flow [2024-05-12 12:53:05,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:05,519 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 141 flow [2024-05-12 12:53:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-05-12 12:53:05,520 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-05-12 12:53:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 141 flow [2024-05-12 12:53:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-05-12 12:53:05,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:05,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:53:05,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:05,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1373628743, now seen corresponding path program 1 times [2024-05-12 12:53:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:05,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386366995] [2024-05-12 12:53:05,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:05,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:05,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:05,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386366995] [2024-05-12 12:53:05,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386366995] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:05,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:53:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269212510] [2024-05-12 12:53:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:53:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:53:05,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:53:05,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:05,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-05-12 12:53:05,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:05,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:05,806 INFO L124 PetriNetUnfolderBase]: 56/119 cut-off events. [2024-05-12 12:53:05,806 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-05-12 12:53:05,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 119 events. 56/119 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 287 event pairs, 10 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 193. Up to 102 conditions per place. [2024-05-12 12:53:05,809 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 34 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-05-12 12:53:05,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 249 flow [2024-05-12 12:53:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:05,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-05-12 12:53:05,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5287356321839081 [2024-05-12 12:53:05,810 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 141 flow. Second operand 3 states and 46 transitions. [2024-05-12 12:53:05,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 249 flow [2024-05-12 12:53:05,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:05,812 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 164 flow [2024-05-12 12:53:05,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-05-12 12:53:05,813 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-05-12 12:53:05,813 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 164 flow [2024-05-12 12:53:05,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-05-12 12:53:05,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:05,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:05,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:53:05,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:05,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:05,814 INFO L85 PathProgramCache]: Analyzing trace with hash 367180979, now seen corresponding path program 1 times [2024-05-12 12:53:05,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:05,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792726075] [2024-05-12 12:53:05,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:05,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:05,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:05,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:05,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792726075] [2024-05-12 12:53:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792726075] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:05,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:05,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696330011] [2024-05-12 12:53:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:05,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:05,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:05,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:05,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-05-12 12:53:05,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:05,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:05,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:06,048 INFO L124 PetriNetUnfolderBase]: 55/117 cut-off events. [2024-05-12 12:53:06,049 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-05-12 12:53:06,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 117 events. 55/117 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 259 event pairs, 16 based on Foata normal form. 1/118 useless extension candidates. Maximal degree in co-relation 195. Up to 69 conditions per place. [2024-05-12 12:53:06,050 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2024-05-12 12:53:06,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 256 flow [2024-05-12 12:53:06,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-05-12 12:53:06,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2024-05-12 12:53:06,051 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 164 flow. Second operand 3 states and 44 transitions. [2024-05-12 12:53:06,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 256 flow [2024-05-12 12:53:06,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:06,053 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 176 flow [2024-05-12 12:53:06,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2024-05-12 12:53:06,053 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2024-05-12 12:53:06,053 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 176 flow [2024-05-12 12:53:06,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-05-12 12:53:06,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:06,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:53:06,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:06,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash 367181940, now seen corresponding path program 1 times [2024-05-12 12:53:06,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:06,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193021406] [2024-05-12 12:53:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:06,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:06,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:06,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193021406] [2024-05-12 12:53:06,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193021406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:06,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:06,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:53:06,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360397973] [2024-05-12 12:53:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:06,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:06,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:06,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-05-12 12:53:06,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:06,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:06,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:06,300 INFO L124 PetriNetUnfolderBase]: 54/115 cut-off events. [2024-05-12 12:53:06,301 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-05-12 12:53:06,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 115 events. 54/115 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 260 event pairs, 17 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 162. Up to 79 conditions per place. [2024-05-12 12:53:06,302 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 34 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2024-05-12 12:53:06,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 272 flow [2024-05-12 12:53:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-05-12 12:53:06,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-05-12 12:53:06,303 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 176 flow. Second operand 3 states and 45 transitions. [2024-05-12 12:53:06,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 272 flow [2024-05-12 12:53:06,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 40 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:53:06,305 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 183 flow [2024-05-12 12:53:06,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-05-12 12:53:06,305 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2024-05-12 12:53:06,305 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 183 flow [2024-05-12 12:53:06,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-05-12 12:53:06,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:06,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:06,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:53:06,306 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:06,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:06,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1502291526, now seen corresponding path program 1 times [2024-05-12 12:53:06,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:06,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90944597] [2024-05-12 12:53:06,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:06,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:06,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:06,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90944597] [2024-05-12 12:53:06,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90944597] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:06,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:06,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:53:06,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036913207] [2024-05-12 12:53:06,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:06,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:06,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:06,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:06,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:06,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-05-12 12:53:06,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-05-12 12:53:06,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:06,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-05-12 12:53:06,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:06,629 INFO L124 PetriNetUnfolderBase]: 54/114 cut-off events. [2024-05-12 12:53:06,630 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2024-05-12 12:53:06,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 114 events. 54/114 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 225 event pairs, 34 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 203. Up to 113 conditions per place. [2024-05-12 12:53:06,631 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 29 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2024-05-12 12:53:06,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 31 transitions, 227 flow [2024-05-12 12:53:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:53:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:53:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2024-05-12 12:53:06,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-05-12 12:53:06,632 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 183 flow. Second operand 3 states and 34 transitions. [2024-05-12 12:53:06,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 31 transitions, 227 flow [2024-05-12 12:53:06,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 202 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 12:53:06,633 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 144 flow [2024-05-12 12:53:06,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-05-12 12:53:06,634 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-05-12 12:53:06,634 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 144 flow [2024-05-12 12:53:06,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-05-12 12:53:06,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:06,635 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] [2024-05-12 12:53:06,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:53:06,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:06,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:06,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1184812350, now seen corresponding path program 1 times [2024-05-12 12:53:06,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:06,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554013007] [2024-05-12 12:53:06,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:06,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554013007] [2024-05-12 12:53:06,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554013007] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:06,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:06,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904505006] [2024-05-12 12:53:06,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:06,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:06,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:06,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:06,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:06,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:06,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:06,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:06,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:06,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:07,084 INFO L124 PetriNetUnfolderBase]: 58/146 cut-off events. [2024-05-12 12:53:07,084 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2024-05-12 12:53:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 146 events. 58/146 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 457 event pairs, 6 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 481. Up to 69 conditions per place. [2024-05-12 12:53:07,085 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 42 selfloop transitions, 8 changer transitions 12/63 dead transitions. [2024-05-12 12:53:07,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 63 transitions, 348 flow [2024-05-12 12:53:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-05-12 12:53:07,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804597701149425 [2024-05-12 12:53:07,087 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 144 flow. Second operand 6 states and 101 transitions. [2024-05-12 12:53:07,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 63 transitions, 348 flow [2024-05-12 12:53:07,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 63 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:53:07,088 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 158 flow [2024-05-12 12:53:07,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-05-12 12:53:07,089 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-05-12 12:53:07,089 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 158 flow [2024-05-12 12:53:07,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:07,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:07,090 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] [2024-05-12 12:53:07,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 12:53:07,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:07,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1502772616, now seen corresponding path program 2 times [2024-05-12 12:53:07,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:07,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480781474] [2024-05-12 12:53:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:07,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480781474] [2024-05-12 12:53:07,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480781474] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:07,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:07,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:07,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156649353] [2024-05-12 12:53:07,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:07,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:07,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:07,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:07,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:07,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:07,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:07,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:07,516 INFO L124 PetriNetUnfolderBase]: 47/140 cut-off events. [2024-05-12 12:53:07,516 INFO L125 PetriNetUnfolderBase]: For 324/324 co-relation queries the response was YES. [2024-05-12 12:53:07,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 140 events. 47/140 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 457 event pairs, 2 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 495. Up to 65 conditions per place. [2024-05-12 12:53:07,517 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 38 selfloop transitions, 7 changer transitions 13/59 dead transitions. [2024-05-12 12:53:07,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 352 flow [2024-05-12 12:53:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-05-12 12:53:07,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-05-12 12:53:07,518 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 158 flow. Second operand 6 states and 98 transitions. [2024-05-12 12:53:07,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 352 flow [2024-05-12 12:53:07,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 336 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 12:53:07,520 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 151 flow [2024-05-12 12:53:07,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2024-05-12 12:53:07,521 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2024-05-12 12:53:07,521 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 151 flow [2024-05-12 12:53:07,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:07,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:07,522 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] [2024-05-12 12:53:07,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 12:53:07,522 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:07,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash 872006282, now seen corresponding path program 3 times [2024-05-12 12:53:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:07,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333247850] [2024-05-12 12:53:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:07,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:07,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:07,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333247850] [2024-05-12 12:53:07,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333247850] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:07,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:07,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:07,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537177620] [2024-05-12 12:53:07,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:07,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:07,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:07,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:07,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:07,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:07,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:07,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:07,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:07,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:07,993 INFO L124 PetriNetUnfolderBase]: 31/98 cut-off events. [2024-05-12 12:53:07,993 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-05-12 12:53:07,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 98 events. 31/98 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 262 event pairs, 0 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 364. Up to 40 conditions per place. [2024-05-12 12:53:07,994 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 36 selfloop transitions, 6 changer transitions 12/55 dead transitions. [2024-05-12 12:53:07,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 324 flow [2024-05-12 12:53:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-05-12 12:53:07,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459770114942529 [2024-05-12 12:53:07,995 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 151 flow. Second operand 6 states and 95 transitions. [2024-05-12 12:53:07,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 324 flow [2024-05-12 12:53:07,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 292 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 12:53:07,997 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 120 flow [2024-05-12 12:53:07,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2024-05-12 12:53:07,998 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2024-05-12 12:53:07,998 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 120 flow [2024-05-12 12:53:07,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:07,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:07,998 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] [2024-05-12 12:53:07,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 12:53:07,999 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:07,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 449677022, now seen corresponding path program 4 times [2024-05-12 12:53:07,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:07,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508910897] [2024-05-12 12:53:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:08,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508910897] [2024-05-12 12:53:08,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508910897] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:08,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:08,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632865195] [2024-05-12 12:53:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:08,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:08,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:08,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:08,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:08,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:08,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:08,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:08,361 INFO L124 PetriNetUnfolderBase]: 21/81 cut-off events. [2024-05-12 12:53:08,361 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2024-05-12 12:53:08,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 81 events. 21/81 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 194 event pairs, 4 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 281. Up to 40 conditions per place. [2024-05-12 12:53:08,362 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 24 selfloop transitions, 5 changer transitions 9/39 dead transitions. [2024-05-12 12:53:08,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 237 flow [2024-05-12 12:53:08,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:53:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:53:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-05-12 12:53:08,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496551724137931 [2024-05-12 12:53:08,364 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 120 flow. Second operand 5 states and 72 transitions. [2024-05-12 12:53:08,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 237 flow [2024-05-12 12:53:08,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 215 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-05-12 12:53:08,365 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 111 flow [2024-05-12 12:53:08,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2024-05-12 12:53:08,366 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-05-12 12:53:08,366 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 111 flow [2024-05-12 12:53:08,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:08,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:08,367 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] [2024-05-12 12:53:08,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 12:53:08,367 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:08,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:08,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1607803656, now seen corresponding path program 5 times [2024-05-12 12:53:08,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:08,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342972797] [2024-05-12 12:53:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:08,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:08,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342972797] [2024-05-12 12:53:08,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342972797] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:08,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:08,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:08,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479592009] [2024-05-12 12:53:08,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:08,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:08,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:08,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:08,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:08,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:08,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:08,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:08,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:08,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:08,721 INFO L124 PetriNetUnfolderBase]: 12/53 cut-off events. [2024-05-12 12:53:08,721 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-05-12 12:53:08,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 53 events. 12/53 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 0 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 190. Up to 18 conditions per place. [2024-05-12 12:53:08,722 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 22 selfloop transitions, 3 changer transitions 9/35 dead transitions. [2024-05-12 12:53:08,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 35 transitions, 203 flow [2024-05-12 12:53:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2024-05-12 12:53:08,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2024-05-12 12:53:08,723 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 111 flow. Second operand 6 states and 76 transitions. [2024-05-12 12:53:08,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 35 transitions, 203 flow [2024-05-12 12:53:08,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 172 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-05-12 12:53:08,725 INFO L231 Difference]: Finished difference. Result has 42 places, 22 transitions, 73 flow [2024-05-12 12:53:08,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=73, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2024-05-12 12:53:08,725 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-05-12 12:53:08,725 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 73 flow [2024-05-12 12:53:08,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:08,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:53:08,726 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] [2024-05-12 12:53:08,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 12:53:08,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 12:53:08,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:53:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2060617980, now seen corresponding path program 6 times [2024-05-12 12:53:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:53:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145388450] [2024-05-12 12:53:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:53:08,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:53:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:53:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:53:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:53:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145388450] [2024-05-12 12:53:08,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145388450] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:53:08,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:53:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 12:53:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126217607] [2024-05-12 12:53:08,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:53:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:53:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:53:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:53:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:53:08,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-05-12 12:53:08,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:08,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:53:08,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-05-12 12:53:08,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:53:09,072 INFO L124 PetriNetUnfolderBase]: 6/32 cut-off events. [2024-05-12 12:53:09,072 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-05-12 12:53:09,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 32 events. 6/32 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 97. Up to 12 conditions per place. [2024-05-12 12:53:09,073 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-05-12 12:53:09,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 26 transitions, 131 flow [2024-05-12 12:53:09,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 12:53:09,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 12:53:09,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-05-12 12:53:09,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-05-12 12:53:09,074 INFO L175 Difference]: Start difference. First operand has 42 places, 22 transitions, 73 flow. Second operand 6 states and 69 transitions. [2024-05-12 12:53:09,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 26 transitions, 131 flow [2024-05-12 12:53:09,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 112 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 12:53:09,075 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-05-12 12:53:09,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-05-12 12:53:09,075 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-05-12 12:53:09,075 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-05-12 12:53:09,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2024-05-12 12:53:09,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-05-12 12:53:09,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-05-12 12:53:09,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-05-12 12:53:09,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-05-12 12:53:09,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-05-12 12:53:09,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-05-12 12:53:09,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-05-12 12:53:09,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 12:53:09,079 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:53:09,081 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:53:09,081 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:53:09,084 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-05-12 12:53:09,084 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-05-12 12:53:09,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:53:09 BasicIcfg [2024-05-12 12:53:09,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:53:09,086 INFO L158 Benchmark]: Toolchain (without parser) took 6543.48ms. Allocated memory was 188.7MB in the beginning and 411.0MB in the end (delta: 222.3MB). Free memory was 154.0MB in the beginning and 315.9MB in the end (delta: -161.9MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2024-05-12 12:53:09,086 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:09,086 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:09,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.97ms. Allocated memory is still 188.7MB. Free memory was 154.0MB in the beginning and 138.1MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-05-12 12:53:09,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.54ms. Allocated memory is still 188.7MB. Free memory was 138.1MB in the beginning and 136.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:09,087 INFO L158 Benchmark]: Boogie Preprocessor took 89.78ms. Allocated memory is still 188.7MB. Free memory was 136.2MB in the beginning and 133.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:09,087 INFO L158 Benchmark]: RCFGBuilder took 847.64ms. Allocated memory is still 188.7MB. Free memory was 133.1MB in the beginning and 65.8MB in the end (delta: 67.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-05-12 12:53:09,087 INFO L158 Benchmark]: TraceAbstraction took 5271.95ms. Allocated memory was 188.7MB in the beginning and 411.0MB in the end (delta: 222.3MB). Free memory was 65.8MB in the beginning and 315.9MB in the end (delta: -250.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:53:09,088 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 0.16ms. Allocated memory is still 121.6MB. Free memory is still 86.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.97ms. Allocated memory is still 188.7MB. Free memory was 154.0MB in the beginning and 138.1MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.54ms. Allocated memory is still 188.7MB. Free memory was 138.1MB in the beginning and 136.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.78ms. Allocated memory is still 188.7MB. Free memory was 136.2MB in the beginning and 133.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 847.64ms. Allocated memory is still 188.7MB. Free memory was 133.1MB in the beginning and 65.8MB in the end (delta: 67.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5271.95ms. Allocated memory was 188.7MB in the beginning and 411.0MB in the end (delta: 222.3MB). Free memory was 65.8MB in the beginning and 315.9MB in the end (delta: -250.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 81]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 82]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 83]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 88]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 39 locations, 7 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: 5.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 503 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 453 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1008 IncrementalHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 4 mSDtfsCounter, 1008 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=7, InterpolantAutomatonStates: 59, 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, 3.0s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 1556 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:53:09,108 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