./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:39:36,554 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:39:36,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:39:36,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:39:36,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:39:36,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:39:36,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:39:36,667 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:39:36,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:39:36,671 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:39:36,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:39:36,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:39:36,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:39:36,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:39:36,674 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:39:36,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:39:36,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:39:36,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:39:36,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:39:36,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:39:36,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:39:36,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:39:36,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:39:36,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:39:36,677 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:39:36,677 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:39:36,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:39:36,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:39:36,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:39:36,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:39:36,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:39:36,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:39:36,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:39:36,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:39:36,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:39:36,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:39:36,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:39:36,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:39:36,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:39:36,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:39:36,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:39:36,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:39:36,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:39:36,682 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:39:36,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:39:36,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:39:36,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:39:36,932 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:39:36,932 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:39:36,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-21 19:39:38,133 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:39:38,385 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:39:38,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-21 19:39:38,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e58c380c/29fbccee397141b59b53d3f194914c5e/FLAGaa606895e [2024-06-21 19:39:38,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e58c380c/29fbccee397141b59b53d3f194914c5e [2024-06-21 19:39:38,418 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:39:38,419 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:39:38,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_rmo.opt.yml/witness.yml [2024-06-21 19:39:38,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:39:38,495 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:39:38,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:39:38,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:39:38,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:39:38,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:39:38" (1/2) ... [2024-06-21 19:39:38,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251af80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:38, skipping insertion in model container [2024-06-21 19:39:38,503 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:39:38" (1/2) ... [2024-06-21 19:39:38,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28ab7c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:38, skipping insertion in model container [2024-06-21 19:39:38,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:38" (2/2) ... [2024-06-21 19:39:38,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251af80 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:38, skipping insertion in model container [2024-06-21 19:39:38,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:38" (2/2) ... [2024-06-21 19:39:38,507 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:39:38,544 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:39:38,546 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:38,546 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:38,546 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:38,546 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:38,547 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:39:38,547 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-21 19:39:38,595 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:39:38,982 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:39:39,000 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:39:39,151 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:39:39,211 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:39:39,211 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39 WrapperNode [2024-06-21 19:39:39,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:39:39,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:39:39,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:39:39,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:39:39,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,266 INFO L138 Inliner]: procedures = 176, calls = 79, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2024-06-21 19:39:39,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:39:39,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:39:39,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:39:39,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:39:39,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,314 INFO L175 MemorySlicer]: Split 33 memory accesses to 2 slices as follows [2, 31]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-21 19:39:39,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,331 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,335 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:39:39,336 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:39:39,336 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:39:39,336 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:39:39,337 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (1/1) ... [2024-06-21 19:39:39,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:39:39,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:39:39,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 19:39:39,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 19:39:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 19:39:39,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 19:39:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 19:39:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 19:39:39,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:39:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:39:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:39:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:39:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:39:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:39:39,443 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:39:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:39:39,444 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 19:39:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 19:39:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:39:39,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 19:39:39,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:39:39,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:39:39,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:39:39,447 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:39:39,609 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:39:39,611 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:39:39,974 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:39:39,974 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:39:40,284 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:39:40,285 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:39:40,285 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:39:40 BoogieIcfgContainer [2024-06-21 19:39:40,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:39:40,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:39:40,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:39:40,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:39:40,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:39:38" (1/4) ... [2024-06-21 19:39:40,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b515c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:39:40, skipping insertion in model container [2024-06-21 19:39:40,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:38" (2/4) ... [2024-06-21 19:39:40,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b515c49 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:39:40, skipping insertion in model container [2024-06-21 19:39:40,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:39" (3/4) ... [2024-06-21 19:39:40,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b515c49 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:39:40, skipping insertion in model container [2024-06-21 19:39:40,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:39:40" (4/4) ... [2024-06-21 19:39:40,296 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2024-06-21 19:39:40,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:39:40,315 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 19:39:40,315 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:39:40,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:39:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 19:39:40,464 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-06-21 19:39:40,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:39:40,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:39:40,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 120 flow [2024-06-21 19:39:40,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 42 transitions, 96 flow [2024-06-21 19:39:40,481 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:39:40,494 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;@17a4db3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:39:40,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 19:39:40,499 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:39:40,499 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:39:40,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:39:40,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:40,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:39:40,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:40,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 722047472, now seen corresponding path program 1 times [2024-06-21 19:39:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:40,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824558775] [2024-06-21 19:39:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:40,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:40,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824558775] [2024-06-21 19:39:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824558775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:40,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:40,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:39:40,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292963520] [2024-06-21 19:39:40,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:39:40,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:39:40,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:39:40,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:40,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:40,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:40,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:40,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:41,749 INFO L124 PetriNetUnfolderBase]: 1686/2741 cut-off events. [2024-06-21 19:39:41,750 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2024-06-21 19:39:41,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5305 conditions, 2741 events. 1686/2741 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16316 event pairs, 1018 based on Foata normal form. 1/2609 useless extension candidates. Maximal degree in co-relation 5292. Up to 2416 conditions per place. [2024-06-21 19:39:41,779 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 41 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-21 19:39:41,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 231 flow [2024-06-21 19:39:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:39:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:39:41,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-21 19:39:41,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2024-06-21 19:39:41,793 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 96 flow. Second operand 3 states and 101 transitions. [2024-06-21 19:39:41,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 231 flow [2024-06-21 19:39:41,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:39:41,802 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 131 flow [2024-06-21 19:39:41,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-21 19:39:41,810 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2024-06-21 19:39:41,810 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 131 flow [2024-06-21 19:39:41,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:41,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:41,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:41,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:39:41,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:41,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1350740455, now seen corresponding path program 1 times [2024-06-21 19:39:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:41,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535131015] [2024-06-21 19:39:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:42,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535131015] [2024-06-21 19:39:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535131015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:42,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:39:42,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553078527] [2024-06-21 19:39:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:42,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:39:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:42,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:39:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:39:42,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:42,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:42,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:42,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:42,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:42,734 INFO L124 PetriNetUnfolderBase]: 1651/2672 cut-off events. [2024-06-21 19:39:42,735 INFO L125 PetriNetUnfolderBase]: For 508/517 co-relation queries the response was YES. [2024-06-21 19:39:42,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6118 conditions, 2672 events. 1651/2672 cut-off events. For 508/517 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16248 event pairs, 691 based on Foata normal form. 16/2610 useless extension candidates. Maximal degree in co-relation 6106. Up to 2268 conditions per place. [2024-06-21 19:39:42,755 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 41 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-06-21 19:39:42,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 263 flow [2024-06-21 19:39:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:39:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:39:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-21 19:39:42,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2024-06-21 19:39:42,757 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 131 flow. Second operand 3 states and 98 transitions. [2024-06-21 19:39:42,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 263 flow [2024-06-21 19:39:42,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:42,760 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 162 flow [2024-06-21 19:39:42,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-21 19:39:42,761 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-21 19:39:42,761 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 162 flow [2024-06-21 19:39:42,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:42,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:42,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:42,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:39:42,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:42,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 419723327, now seen corresponding path program 1 times [2024-06-21 19:39:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801954843] [2024-06-21 19:39:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:42,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:42,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801954843] [2024-06-21 19:39:42,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801954843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:42,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:42,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:39:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921131063] [2024-06-21 19:39:42,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:39:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:39:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:39:42,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:42,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:42,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:42,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:42,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:43,357 INFO L124 PetriNetUnfolderBase]: 1659/2705 cut-off events. [2024-06-21 19:39:43,358 INFO L125 PetriNetUnfolderBase]: For 1037/1074 co-relation queries the response was YES. [2024-06-21 19:39:43,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 2705 events. 1659/2705 cut-off events. For 1037/1074 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16057 event pairs, 777 based on Foata normal form. 11/2701 useless extension candidates. Maximal degree in co-relation 6852. Up to 2245 conditions per place. [2024-06-21 19:39:43,381 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 61 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-21 19:39:43,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 422 flow [2024-06-21 19:39:43,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:39:43,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:39:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-21 19:39:43,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-06-21 19:39:43,388 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 162 flow. Second operand 4 states and 136 transitions. [2024-06-21 19:39:43,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 422 flow [2024-06-21 19:39:43,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 85 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:43,393 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 239 flow [2024-06-21 19:39:43,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=239, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-06-21 19:39:43,394 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-06-21 19:39:43,395 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 239 flow [2024-06-21 19:39:43,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:43,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:43,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:43,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:39:43,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:43,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:43,396 INFO L85 PathProgramCache]: Analyzing trace with hash 127922983, now seen corresponding path program 1 times [2024-06-21 19:39:43,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:43,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840396974] [2024-06-21 19:39:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:43,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:43,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:43,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840396974] [2024-06-21 19:39:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840396974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:43,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:43,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:43,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367048664] [2024-06-21 19:39:43,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:43,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:43,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:43,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:43,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:43,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:43,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:44,307 INFO L124 PetriNetUnfolderBase]: 1613/2629 cut-off events. [2024-06-21 19:39:44,308 INFO L125 PetriNetUnfolderBase]: For 2431/2456 co-relation queries the response was YES. [2024-06-21 19:39:44,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 2629 events. 1613/2629 cut-off events. For 2431/2456 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15491 event pairs, 786 based on Foata normal form. 23/2639 useless extension candidates. Maximal degree in co-relation 7695. Up to 2215 conditions per place. [2024-06-21 19:39:44,332 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 58 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-06-21 19:39:44,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 449 flow [2024-06-21 19:39:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:39:44,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:39:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-21 19:39:44,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6394230769230769 [2024-06-21 19:39:44,334 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 239 flow. Second operand 4 states and 133 transitions. [2024-06-21 19:39:44,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 449 flow [2024-06-21 19:39:44,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 82 transitions, 441 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-21 19:39:44,342 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 268 flow [2024-06-21 19:39:44,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-21 19:39:44,344 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2024-06-21 19:39:44,345 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 268 flow [2024-06-21 19:39:44,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:44,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:44,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:44,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:39:44,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:44,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:44,346 INFO L85 PathProgramCache]: Analyzing trace with hash 819176556, now seen corresponding path program 1 times [2024-06-21 19:39:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:44,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910518287] [2024-06-21 19:39:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910518287] [2024-06-21 19:39:44,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910518287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:44,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48756847] [2024-06-21 19:39:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:44,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:44,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:44,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:44,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:44,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:44,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:44,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:45,484 INFO L124 PetriNetUnfolderBase]: 3171/5137 cut-off events. [2024-06-21 19:39:45,485 INFO L125 PetriNetUnfolderBase]: For 5747/5794 co-relation queries the response was YES. [2024-06-21 19:39:45,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15283 conditions, 5137 events. 3171/5137 cut-off events. For 5747/5794 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 33868 event pairs, 605 based on Foata normal form. 61/5167 useless extension candidates. Maximal degree in co-relation 15263. Up to 2336 conditions per place. [2024-06-21 19:39:45,534 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 74 selfloop transitions, 23 changer transitions 0/110 dead transitions. [2024-06-21 19:39:45,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 672 flow [2024-06-21 19:39:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-06-21 19:39:45,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-21 19:39:45,543 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 268 flow. Second operand 5 states and 169 transitions. [2024-06-21 19:39:45,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 672 flow [2024-06-21 19:39:45,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 110 transitions, 650 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:39:45,553 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 423 flow [2024-06-21 19:39:45,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=423, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-21 19:39:45,556 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-21 19:39:45,556 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 423 flow [2024-06-21 19:39:45,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:45,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:45,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:45,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:39:45,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:45,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:45,557 INFO L85 PathProgramCache]: Analyzing trace with hash 476137456, now seen corresponding path program 2 times [2024-06-21 19:39:45,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:45,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549276114] [2024-06-21 19:39:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:45,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:45,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:45,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549276114] [2024-06-21 19:39:45,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549276114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:45,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:45,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:45,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146806074] [2024-06-21 19:39:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:45,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:45,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:45,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:45,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 423 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:45,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:45,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:45,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:46,880 INFO L124 PetriNetUnfolderBase]: 3591/5726 cut-off events. [2024-06-21 19:39:46,881 INFO L125 PetriNetUnfolderBase]: For 13068/14002 co-relation queries the response was YES. [2024-06-21 19:39:46,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20230 conditions, 5726 events. 3591/5726 cut-off events. For 13068/14002 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39094 event pairs, 1788 based on Foata normal form. 80/5565 useless extension candidates. Maximal degree in co-relation 20207. Up to 4167 conditions per place. [2024-06-21 19:39:46,932 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 67 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-06-21 19:39:46,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 749 flow [2024-06-21 19:39:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-21 19:39:46,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807692307692308 [2024-06-21 19:39:46,934 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 423 flow. Second operand 5 states and 151 transitions. [2024-06-21 19:39:46,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 749 flow [2024-06-21 19:39:47,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 707 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-06-21 19:39:47,014 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 523 flow [2024-06-21 19:39:47,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-21 19:39:47,014 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-21 19:39:47,015 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 523 flow [2024-06-21 19:39:47,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:47,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:47,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:47,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:39:47,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:47,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1308003630, now seen corresponding path program 1 times [2024-06-21 19:39:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:47,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530526505] [2024-06-21 19:39:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:47,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:47,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:47,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:47,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530526505] [2024-06-21 19:39:47,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530526505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:47,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:47,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:39:47,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324646686] [2024-06-21 19:39:47,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:47,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:39:47,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:47,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:39:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:39:47,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 52 [2024-06-21 19:39:47,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:47,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:47,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 52 [2024-06-21 19:39:47,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:48,851 INFO L124 PetriNetUnfolderBase]: 4199/6853 cut-off events. [2024-06-21 19:39:48,851 INFO L125 PetriNetUnfolderBase]: For 17139/17219 co-relation queries the response was YES. [2024-06-21 19:39:48,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25353 conditions, 6853 events. 4199/6853 cut-off events. For 17139/17219 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 47632 event pairs, 846 based on Foata normal form. 70/6883 useless extension candidates. Maximal degree in co-relation 25325. Up to 4432 conditions per place. [2024-06-21 19:39:48,911 INFO L140 encePairwiseOnDemand]: 38/52 looper letters, 123 selfloop transitions, 39 changer transitions 0/174 dead transitions. [2024-06-21 19:39:48,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 174 transitions, 1353 flow [2024-06-21 19:39:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:39:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:39:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-06-21 19:39:48,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105769230769231 [2024-06-21 19:39:48,913 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 523 flow. Second operand 8 states and 254 transitions. [2024-06-21 19:39:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 174 transitions, 1353 flow [2024-06-21 19:39:48,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 174 transitions, 1342 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:48,962 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 843 flow [2024-06-21 19:39:48,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=843, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2024-06-21 19:39:48,963 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2024-06-21 19:39:48,963 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 843 flow [2024-06-21 19:39:48,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:48,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:48,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:48,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:39:48,964 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:48,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:48,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1929651484, now seen corresponding path program 2 times [2024-06-21 19:39:48,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:48,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756335055] [2024-06-21 19:39:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:48,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756335055] [2024-06-21 19:39:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756335055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:49,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486600024] [2024-06-21 19:39:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:49,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:39:49,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:49,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:39:49,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:39:49,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:49,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 843 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:49,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:49,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:49,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:50,470 INFO L124 PetriNetUnfolderBase]: 3945/6589 cut-off events. [2024-06-21 19:39:50,472 INFO L125 PetriNetUnfolderBase]: For 24618/24999 co-relation queries the response was YES. [2024-06-21 19:39:50,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24908 conditions, 6589 events. 3945/6589 cut-off events. For 24618/24999 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 47266 event pairs, 601 based on Foata normal form. 458/6973 useless extension candidates. Maximal degree in co-relation 24875. Up to 2375 conditions per place. [2024-06-21 19:39:50,529 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 93 selfloop transitions, 37 changer transitions 11/154 dead transitions. [2024-06-21 19:39:50,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 154 transitions, 1432 flow [2024-06-21 19:39:50,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-06-21 19:39:50,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6576923076923077 [2024-06-21 19:39:50,531 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 843 flow. Second operand 5 states and 171 transitions. [2024-06-21 19:39:50,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 154 transitions, 1432 flow [2024-06-21 19:39:50,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 154 transitions, 1369 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-21 19:39:50,598 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 958 flow [2024-06-21 19:39:50,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=958, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2024-06-21 19:39:50,601 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-21 19:39:50,601 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 958 flow [2024-06-21 19:39:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:50,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:50,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:50,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:39:50,602 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:50,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1875361332, now seen corresponding path program 3 times [2024-06-21 19:39:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:50,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933632533] [2024-06-21 19:39:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:51,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:51,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933632533] [2024-06-21 19:39:51,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933632533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:51,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051676286] [2024-06-21 19:39:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:51,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:39:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:39:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:39:51,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:51,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:51,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:51,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:51,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:52,006 INFO L124 PetriNetUnfolderBase]: 3291/5600 cut-off events. [2024-06-21 19:39:52,007 INFO L125 PetriNetUnfolderBase]: For 25129/25612 co-relation queries the response was YES. [2024-06-21 19:39:52,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22199 conditions, 5600 events. 3291/5600 cut-off events. For 25129/25612 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 39755 event pairs, 979 based on Foata normal form. 138/5533 useless extension candidates. Maximal degree in co-relation 22163. Up to 2948 conditions per place. [2024-06-21 19:39:52,043 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 83 selfloop transitions, 39 changer transitions 0/135 dead transitions. [2024-06-21 19:39:52,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 1372 flow [2024-06-21 19:39:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-21 19:39:52,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2024-06-21 19:39:52,045 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 958 flow. Second operand 5 states and 150 transitions. [2024-06-21 19:39:52,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 1372 flow [2024-06-21 19:39:52,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 1353 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:52,104 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 1166 flow [2024-06-21 19:39:52,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1166, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-06-21 19:39:52,105 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 37 predicate places. [2024-06-21 19:39:52,105 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 1166 flow [2024-06-21 19:39:52,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:52,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:52,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:52,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:39:52,106 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:52,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -580976344, now seen corresponding path program 1 times [2024-06-21 19:39:52,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:52,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935907430] [2024-06-21 19:39:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:52,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:52,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935907430] [2024-06-21 19:39:52,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935907430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:52,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:52,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:39:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658473061] [2024-06-21 19:39:52,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:39:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:39:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:39:52,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:52,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 1166 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:52,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:52,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:52,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:53,218 INFO L124 PetriNetUnfolderBase]: 3261/5606 cut-off events. [2024-06-21 19:39:53,218 INFO L125 PetriNetUnfolderBase]: For 28424/28627 co-relation queries the response was YES. [2024-06-21 19:39:53,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23910 conditions, 5606 events. 3261/5606 cut-off events. For 28424/28627 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 40027 event pairs, 1282 based on Foata normal form. 48/5524 useless extension candidates. Maximal degree in co-relation 23871. Up to 3675 conditions per place. [2024-06-21 19:39:53,262 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 108 selfloop transitions, 31 changer transitions 2/154 dead transitions. [2024-06-21 19:39:53,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 154 transitions, 1775 flow [2024-06-21 19:39:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-21 19:39:53,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6269230769230769 [2024-06-21 19:39:53,265 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 1166 flow. Second operand 5 states and 163 transitions. [2024-06-21 19:39:53,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 154 transitions, 1775 flow [2024-06-21 19:39:53,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 154 transitions, 1736 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:53,368 INFO L231 Difference]: Finished difference. Result has 98 places, 114 transitions, 1387 flow [2024-06-21 19:39:53,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1387, PETRI_PLACES=98, PETRI_TRANSITIONS=114} [2024-06-21 19:39:53,370 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 43 predicate places. [2024-06-21 19:39:53,370 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 114 transitions, 1387 flow [2024-06-21 19:39:53,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:53,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:53,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:53,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:39:53,371 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:53,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1766127570, now seen corresponding path program 1 times [2024-06-21 19:39:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091723867] [2024-06-21 19:39:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091723867] [2024-06-21 19:39:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091723867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:53,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854281280] [2024-06-21 19:39:53,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:53,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:39:53,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:53,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:39:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:39:53,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:53,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 114 transitions, 1387 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:53,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:53,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:53,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:54,866 INFO L124 PetriNetUnfolderBase]: 3301/5692 cut-off events. [2024-06-21 19:39:54,867 INFO L125 PetriNetUnfolderBase]: For 32050/32151 co-relation queries the response was YES. [2024-06-21 19:39:54,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24992 conditions, 5692 events. 3301/5692 cut-off events. For 32050/32151 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 40514 event pairs, 960 based on Foata normal form. 82/5677 useless extension candidates. Maximal degree in co-relation 24949. Up to 3659 conditions per place. [2024-06-21 19:39:54,908 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 117 selfloop transitions, 30 changer transitions 2/162 dead transitions. [2024-06-21 19:39:54,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 162 transitions, 1935 flow [2024-06-21 19:39:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:39:54,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:39:54,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-21 19:39:54,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-06-21 19:39:54,910 INFO L175 Difference]: Start difference. First operand has 98 places, 114 transitions, 1387 flow. Second operand 5 states and 165 transitions. [2024-06-21 19:39:54,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 162 transitions, 1935 flow [2024-06-21 19:39:55,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 162 transitions, 1884 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:55,006 INFO L231 Difference]: Finished difference. Result has 103 places, 119 transitions, 1496 flow [2024-06-21 19:39:55,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1496, PETRI_PLACES=103, PETRI_TRANSITIONS=119} [2024-06-21 19:39:55,007 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-21 19:39:55,007 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 119 transitions, 1496 flow [2024-06-21 19:39:55,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:55,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:55,009 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] [2024-06-21 19:39:55,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:39:55,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:55,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1342866453, now seen corresponding path program 1 times [2024-06-21 19:39:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030524726] [2024-06-21 19:39:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:55,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:55,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030524726] [2024-06-21 19:39:55,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030524726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:55,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:55,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:39:55,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390742804] [2024-06-21 19:39:55,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:55,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:39:55,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:55,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:39:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:39:55,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:55,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 119 transitions, 1496 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:55,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:55,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:55,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:56,421 INFO L124 PetriNetUnfolderBase]: 3757/6531 cut-off events. [2024-06-21 19:39:56,421 INFO L125 PetriNetUnfolderBase]: For 39772/40011 co-relation queries the response was YES. [2024-06-21 19:39:56,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28330 conditions, 6531 events. 3757/6531 cut-off events. For 39772/40011 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 48198 event pairs, 782 based on Foata normal form. 128/6599 useless extension candidates. Maximal degree in co-relation 28284. Up to 2491 conditions per place. [2024-06-21 19:39:56,475 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 117 selfloop transitions, 51 changer transitions 2/183 dead transitions. [2024-06-21 19:39:56,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 183 transitions, 2198 flow [2024-06-21 19:39:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:39:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:39:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-21 19:39:56,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-21 19:39:56,479 INFO L175 Difference]: Start difference. First operand has 103 places, 119 transitions, 1496 flow. Second operand 6 states and 195 transitions. [2024-06-21 19:39:56,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 183 transitions, 2198 flow [2024-06-21 19:39:56,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 183 transitions, 2128 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-21 19:39:56,591 INFO L231 Difference]: Finished difference. Result has 109 places, 127 transitions, 1698 flow [2024-06-21 19:39:56,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1698, PETRI_PLACES=109, PETRI_TRANSITIONS=127} [2024-06-21 19:39:56,592 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 54 predicate places. [2024-06-21 19:39:56,592 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 127 transitions, 1698 flow [2024-06-21 19:39:56,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:56,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:56,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:56,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:39:56,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:56,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1837298273, now seen corresponding path program 1 times [2024-06-21 19:39:56,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:56,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171166091] [2024-06-21 19:39:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:56,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:57,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:57,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:57,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171166091] [2024-06-21 19:39:57,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171166091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:57,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:57,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:39:57,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727996350] [2024-06-21 19:39:57,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:57,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:39:57,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:57,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:39:57,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:39:57,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:57,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 127 transitions, 1698 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:57,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:57,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:57,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:39:58,272 INFO L124 PetriNetUnfolderBase]: 3733/6485 cut-off events. [2024-06-21 19:39:58,272 INFO L125 PetriNetUnfolderBase]: For 47024/47184 co-relation queries the response was YES. [2024-06-21 19:39:58,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29233 conditions, 6485 events. 3733/6485 cut-off events. For 47024/47184 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47867 event pairs, 704 based on Foata normal form. 136/6551 useless extension candidates. Maximal degree in co-relation 29184. Up to 2501 conditions per place. [2024-06-21 19:39:58,310 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 109 selfloop transitions, 51 changer transitions 3/176 dead transitions. [2024-06-21 19:39:58,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 176 transitions, 2278 flow [2024-06-21 19:39:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:39:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:39:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-21 19:39:58,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2024-06-21 19:39:58,311 INFO L175 Difference]: Start difference. First operand has 109 places, 127 transitions, 1698 flow. Second operand 6 states and 188 transitions. [2024-06-21 19:39:58,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 176 transitions, 2278 flow [2024-06-21 19:39:58,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 176 transitions, 2217 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-21 19:39:58,432 INFO L231 Difference]: Finished difference. Result has 113 places, 126 transitions, 1754 flow [2024-06-21 19:39:58,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1754, PETRI_PLACES=113, PETRI_TRANSITIONS=126} [2024-06-21 19:39:58,433 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 58 predicate places. [2024-06-21 19:39:58,433 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 126 transitions, 1754 flow [2024-06-21 19:39:58,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:58,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:58,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:39:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:39:58,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:39:58,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:58,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1961176795, now seen corresponding path program 2 times [2024-06-21 19:39:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:58,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998051961] [2024-06-21 19:39:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:39:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:59,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998051961] [2024-06-21 19:39:59,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998051961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:59,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:59,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:39:59,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279539638] [2024-06-21 19:39:59,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:59,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:39:59,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:39:59,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:39:59,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:39:59,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 126 transitions, 1754 flow. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:39:59,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:59,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:39:59,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:00,236 INFO L124 PetriNetUnfolderBase]: 3325/5849 cut-off events. [2024-06-21 19:40:00,236 INFO L125 PetriNetUnfolderBase]: For 43836/43972 co-relation queries the response was YES. [2024-06-21 19:40:00,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26110 conditions, 5849 events. 3325/5849 cut-off events. For 43836/43972 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 42600 event pairs, 764 based on Foata normal form. 162/5937 useless extension candidates. Maximal degree in co-relation 26060. Up to 2814 conditions per place. [2024-06-21 19:40:00,273 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 81 selfloop transitions, 6 changer transitions 55/155 dead transitions. [2024-06-21 19:40:00,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 155 transitions, 2122 flow [2024-06-21 19:40:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-21 19:40:00,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615384615384615 [2024-06-21 19:40:00,275 INFO L175 Difference]: Start difference. First operand has 113 places, 126 transitions, 1754 flow. Second operand 5 states and 146 transitions. [2024-06-21 19:40:00,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 155 transitions, 2122 flow [2024-06-21 19:40:00,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 155 transitions, 2090 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 19:40:00,357 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 950 flow [2024-06-21 19:40:00,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=950, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2024-06-21 19:40:00,358 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 60 predicate places. [2024-06-21 19:40:00,358 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 950 flow [2024-06-21 19:40:00,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:00,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:00,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:00,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:40:00,359 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:40:00,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:00,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1689565135, now seen corresponding path program 1 times [2024-06-21 19:40:00,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:00,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117770683] [2024-06-21 19:40:00,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:40:00,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117770683] [2024-06-21 19:40:00,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117770683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:00,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:00,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:00,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050376834] [2024-06-21 19:40:00,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:00,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:00,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:00,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:00,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:00,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:40:00,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 950 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:00,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:00,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:40:00,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:01,608 INFO L124 PetriNetUnfolderBase]: 1556/2793 cut-off events. [2024-06-21 19:40:01,608 INFO L125 PetriNetUnfolderBase]: For 21691/21703 co-relation queries the response was YES. [2024-06-21 19:40:01,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12164 conditions, 2793 events. 1556/2793 cut-off events. For 21691/21703 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17666 event pairs, 628 based on Foata normal form. 26/2794 useless extension candidates. Maximal degree in co-relation 12113. Up to 2039 conditions per place. [2024-06-21 19:40:01,635 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 64 selfloop transitions, 4 changer transitions 36/117 dead transitions. [2024-06-21 19:40:01,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 117 transitions, 1285 flow [2024-06-21 19:40:01,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-06-21 19:40:01,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5923076923076923 [2024-06-21 19:40:01,637 INFO L175 Difference]: Start difference. First operand has 115 places, 81 transitions, 950 flow. Second operand 5 states and 154 transitions. [2024-06-21 19:40:01,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 117 transitions, 1285 flow [2024-06-21 19:40:01,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 117 transitions, 1169 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-21 19:40:01,678 INFO L231 Difference]: Finished difference. Result has 103 places, 68 transitions, 617 flow [2024-06-21 19:40:01,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=103, PETRI_TRANSITIONS=68} [2024-06-21 19:40:01,679 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-21 19:40:01,679 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 68 transitions, 617 flow [2024-06-21 19:40:01,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:01,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:01,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:01,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:40:01,680 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:40:01,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash 143743904, now seen corresponding path program 1 times [2024-06-21 19:40:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:01,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059206749] [2024-06-21 19:40:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:40:02,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:02,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059206749] [2024-06-21 19:40:02,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059206749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:02,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:02,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:40:02,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280089647] [2024-06-21 19:40:02,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:40:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:40:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:40:02,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:40:02,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 68 transitions, 617 flow. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:02,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:02,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:40:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:02,715 INFO L124 PetriNetUnfolderBase]: 1156/2057 cut-off events. [2024-06-21 19:40:02,715 INFO L125 PetriNetUnfolderBase]: For 11189/11307 co-relation queries the response was YES. [2024-06-21 19:40:02,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8390 conditions, 2057 events. 1156/2057 cut-off events. For 11189/11307 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 12382 event pairs, 246 based on Foata normal form. 48/2089 useless extension candidates. Maximal degree in co-relation 8348. Up to 1228 conditions per place. [2024-06-21 19:40:02,732 INFO L140 encePairwiseOnDemand]: 47/52 looper letters, 76 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-06-21 19:40:02,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 106 transitions, 951 flow [2024-06-21 19:40:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:40:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:40:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-21 19:40:02,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288461538461539 [2024-06-21 19:40:02,734 INFO L175 Difference]: Start difference. First operand has 103 places, 68 transitions, 617 flow. Second operand 6 states and 165 transitions. [2024-06-21 19:40:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 106 transitions, 951 flow [2024-06-21 19:40:02,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 883 flow, removed 20 selfloop flow, removed 12 redundant places. [2024-06-21 19:40:02,755 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 643 flow [2024-06-21 19:40:02,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2024-06-21 19:40:02,756 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2024-06-21 19:40:02,756 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 643 flow [2024-06-21 19:40:02,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:02,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:02,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:02,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:40:02,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:40:02,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:02,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1434773900, now seen corresponding path program 1 times [2024-06-21 19:40:02,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:02,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852178274] [2024-06-21 19:40:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:02,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:40:03,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:03,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852178274] [2024-06-21 19:40:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852178274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:03,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:03,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:40:03,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812816441] [2024-06-21 19:40:03,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:40:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:40:03,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:40:03,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 52 [2024-06-21 19:40:03,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:03,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:03,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 52 [2024-06-21 19:40:03,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:04,026 INFO L124 PetriNetUnfolderBase]: 1052/1903 cut-off events. [2024-06-21 19:40:04,026 INFO L125 PetriNetUnfolderBase]: For 9660/9686 co-relation queries the response was YES. [2024-06-21 19:40:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7660 conditions, 1903 events. 1052/1903 cut-off events. For 9660/9686 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11455 event pairs, 142 based on Foata normal form. 64/1946 useless extension candidates. Maximal degree in co-relation 7626. Up to 912 conditions per place. [2024-06-21 19:40:04,033 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 0 selfloop transitions, 0 changer transitions 91/91 dead transitions. [2024-06-21 19:40:04,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 841 flow [2024-06-21 19:40:04,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-21 19:40:04,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115384615384615 [2024-06-21 19:40:04,034 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 643 flow. Second operand 5 states and 133 transitions. [2024-06-21 19:40:04,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 841 flow [2024-06-21 19:40:04,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 771 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 19:40:04,047 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2024-06-21 19:40:04,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2024-06-21 19:40:04,047 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 32 predicate places. [2024-06-21 19:40:04,048 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2024-06-21 19:40:04,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.625) internal successors, (157), 8 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:04,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-21 19:40:04,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-21 19:40:04,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-21 19:40:04,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-21 19:40:04,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-21 19:40:04,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-21 19:40:04,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-21 19:40:04,052 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-21 19:40:04,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:40:04,053 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:04,055 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:40:04,055 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:40:04,059 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-21 19:40:04,059 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-21 19:40:04,060 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:40:04 BasicIcfg [2024-06-21 19:40:04,060 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:40:04,061 INFO L158 Benchmark]: Toolchain (without parser) took 25565.83ms. Allocated memory was 172.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 98.2MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 479.9MB. Max. memory is 16.1GB. [2024-06-21 19:40:04,061 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 75.7MB in the beginning and 75.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:40:04,061 INFO L158 Benchmark]: Witness Parser took 4.68ms. Allocated memory is still 172.0MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:40:04,061 INFO L158 Benchmark]: CACSL2BoogieTranslator took 715.69ms. Allocated memory is still 172.0MB. Free memory was 98.2MB in the beginning and 136.1MB in the end (delta: -37.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 19:40:04,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.27ms. Allocated memory is still 172.0MB. Free memory was 136.1MB in the beginning and 133.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:40:04,062 INFO L158 Benchmark]: Boogie Preprocessor took 68.04ms. Allocated memory is still 172.0MB. Free memory was 133.2MB in the beginning and 129.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 19:40:04,062 INFO L158 Benchmark]: RCFGBuilder took 949.69ms. Allocated memory is still 172.0MB. Free memory was 129.0MB in the beginning and 111.5MB in the end (delta: 17.5MB). Peak memory consumption was 83.1MB. Max. memory is 16.1GB. [2024-06-21 19:40:04,063 INFO L158 Benchmark]: TraceAbstraction took 23772.48ms. Allocated memory was 172.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 110.4MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 491.7MB. Max. memory is 16.1GB. [2024-06-21 19:40:04,064 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory was 75.7MB in the beginning and 75.5MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.68ms. Allocated memory is still 172.0MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 715.69ms. Allocated memory is still 172.0MB. Free memory was 98.2MB in the beginning and 136.1MB in the end (delta: -37.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.27ms. Allocated memory is still 172.0MB. Free memory was 136.1MB in the beginning and 133.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.04ms. Allocated memory is still 172.0MB. Free memory was 133.2MB in the beginning and 129.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 949.69ms. Allocated memory is still 172.0MB. Free memory was 129.0MB in the beginning and 111.5MB in the end (delta: 17.5MB). Peak memory consumption was 83.1MB. Max. memory is 16.1GB. * TraceAbstraction took 23772.48ms. Allocated memory was 172.0MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 110.4MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 491.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 874]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 876]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 878]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 879]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 83 locations, 8 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: 23.6s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 924 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 924 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 191 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2463 IncrementalHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 191 mSolverCounterUnsat, 1 mSDtfsCounter, 2463 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1754occurred in iteration=13, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 268 ConstructedInterpolants, 0 QuantifiedInterpolants, 4562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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! [2024-06-21 19:40:04,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE