./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe020_rmo.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/safe020_rmo.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/safe020_rmo.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_rmo.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 19:39:55,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:39:55,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:39:55,631 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:39:55,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:39:55,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:39:55,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:39:55,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:39:55,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:39:55,667 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:39:55,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:39:55,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:39:55,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:39:55,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:39:55,670 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:39:55,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:39:55,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:39:55,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:39:55,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:39:55,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:39:55,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:39:55,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:39:55,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:39:55,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:39:55,673 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:39:55,673 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:39:55,673 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:39:55,674 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:39:55,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:39:55,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:39:55,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:39:55,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:39:55,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:39:55,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:39:55,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:39:55,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:39:55,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:39:55,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:39:55,677 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:39:55,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:39:55,678 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:39:55,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:39:55,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:39:55,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:39:55,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:39:55,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:39:55,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:39:55,958 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:39:55,959 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:39:55,960 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe020_rmo.yml/witness.yml [2024-06-21 19:39:56,047 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:39:56,047 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:39:56,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_rmo.i [2024-06-21 19:39:57,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:39:57,472 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:39:57,472 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_rmo.i [2024-06-21 19:39:57,489 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ff2bed0/d8552740215a417eb609fa4cc06107cd/FLAG0f3c4ddbe [2024-06-21 19:39:57,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45ff2bed0/d8552740215a417eb609fa4cc06107cd [2024-06-21 19:39:57,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:39:57,509 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:39:57,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:39:57,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:39:57,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:39:57,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:56" (1/2) ... [2024-06-21 19:39:57,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539e9dc8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:57, skipping insertion in model container [2024-06-21 19:39:57,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:56" (1/2) ... [2024-06-21 19:39:57,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c0387bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:39:57, skipping insertion in model container [2024-06-21 19:39:57,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:39:57" (2/2) ... [2024-06-21 19:39:57,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539e9dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:57, skipping insertion in model container [2024-06-21 19:39:57,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:39:57" (2/2) ... [2024-06-21 19:39:57,521 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:39:57,563 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:39:57,564 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:57,564 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:57,565 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) [2024-06-21 19:39:57,565 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:39:57,565 INFO L106 edCorrectnessWitness]: ghost_update [L850-L850] multithreaded = 1; [2024-06-21 19:39:57,612 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:39:57,966 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:39:57,983 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:39:58,109 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:39:58,144 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:39:58,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58 WrapperNode [2024-06-21 19:39:58,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:39:58,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:39:58,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:39:58,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:39:58,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,200 INFO L138 Inliner]: procedures = 175, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2024-06-21 19:39:58,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:39:58,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:39:58,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:39:58,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:39:58,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,247 INFO L175 MemorySlicer]: Split 29 memory accesses to 2 slices as follows [2, 27]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 8 writes are split as follows [0, 8]. [2024-06-21 19:39:58,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,282 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:39:58,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:39:58,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:39:58,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:39:58,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (1/1) ... [2024-06-21 19:39:58,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:39:58,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:39:58,308 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 19:39:58,314 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 19:39:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 19:39:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 19:39:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 19:39:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 19:39:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:39:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:39:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:39:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:39:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:39:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:39:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:39:58,353 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:39:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:39:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 19:39:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:39:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:39:58,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:39:58,355 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 19:39:58,560 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:39:58,562 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:39:59,085 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:39:59,086 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:39:59,359 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:39:59,359 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:39:59,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:39:59 BoogieIcfgContainer [2024-06-21 19:39:59,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:39:59,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:39:59,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:39:59,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:39:59,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:39:56" (1/4) ... [2024-06-21 19:39:59,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346dfcfd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:39:59, skipping insertion in model container [2024-06-21 19:39:59,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:39:57" (2/4) ... [2024-06-21 19:39:59,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346dfcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:39:59, skipping insertion in model container [2024-06-21 19:39:59,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:39:58" (3/4) ... [2024-06-21 19:39:59,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@346dfcfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:39:59, skipping insertion in model container [2024-06-21 19:39:59,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:39:59" (4/4) ... [2024-06-21 19:39:59,372 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_rmo.i [2024-06-21 19:39:59,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:39:59,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 19:39:59,390 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:39:59,444 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:39:59,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-21 19:39:59,541 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-21 19:39:59,542 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:39:59,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:39:59,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-21 19:39:59,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-21 19:39:59,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:39:59,562 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;@919e8bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:39:59,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 19:39:59,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:39:59,566 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 19:39:59,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:39:59,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:39:59,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:39:59,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:39:59,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:39:59,573 INFO L85 PathProgramCache]: Analyzing trace with hash 653693013, now seen corresponding path program 1 times [2024-06-21 19:39:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:39:59,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680471035] [2024-06-21 19:39:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:39:59,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:39:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:39:59,910 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 19:39:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:39:59,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680471035] [2024-06-21 19:39:59,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680471035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:39:59,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:39:59,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:39:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097917627] [2024-06-21 19:39:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:39:59,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:39:59,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:39:59,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:39:59,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:39:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:39:59,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:39:59,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:39:59,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:39:59,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:00,261 INFO L124 PetriNetUnfolderBase]: 354/665 cut-off events. [2024-06-21 19:40:00,262 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-06-21 19:40:00,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 665 events. 354/665 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3633 event pairs, 186 based on Foata normal form. 1/626 useless extension candidates. Maximal degree in co-relation 1261. Up to 561 conditions per place. [2024-06-21 19:40:00,275 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-21 19:40:00,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 173 flow [2024-06-21 19:40:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:40:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:40:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-21 19:40:00,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.626984126984127 [2024-06-21 19:40:00,290 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 79 transitions. [2024-06-21 19:40:00,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 173 flow [2024-06-21 19:40:00,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:40:00,296 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-21 19:40:00,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-21 19:40:00,302 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-21 19:40:00,302 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-21 19:40:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:40:00,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:00,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:00,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:40:00,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:00,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1043671587, now seen corresponding path program 1 times [2024-06-21 19:40:00,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:00,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881287580] [2024-06-21 19:40:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:00,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:00,693 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 19:40:00,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:00,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881287580] [2024-06-21 19:40:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881287580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:00,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:00,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:40:00,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353131421] [2024-06-21 19:40:00,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:00,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:40:00,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:00,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:40:00,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:40:00,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:00,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:00,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:00,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:00,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:00,897 INFO L124 PetriNetUnfolderBase]: 345/634 cut-off events. [2024-06-21 19:40:00,897 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-21 19:40:00,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 634 events. 345/634 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3518 event pairs, 117 based on Foata normal form. 6/614 useless extension candidates. Maximal degree in co-relation 1435. Up to 508 conditions per place. [2024-06-21 19:40:00,903 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 27 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-06-21 19:40:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 184 flow [2024-06-21 19:40:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:40:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:40:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-21 19:40:00,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-21 19:40:00,907 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 3 states and 75 transitions. [2024-06-21 19:40:00,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 184 flow [2024-06-21 19:40:00,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:40:00,911 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 125 flow [2024-06-21 19:40:00,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-21 19:40:00,914 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-21 19:40:00,914 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 125 flow [2024-06-21 19:40:00,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:00,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:00,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:00,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:40:00,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:00,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1121884732, now seen corresponding path program 1 times [2024-06-21 19:40:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:00,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379490131] [2024-06-21 19:40:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:00,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:01,056 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 19:40:01,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:01,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379490131] [2024-06-21 19:40:01,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379490131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:01,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:01,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:40:01,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246240307] [2024-06-21 19:40:01,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:01,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:40:01,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:40:01,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:40:01,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:01,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:01,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:01,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:01,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:01,266 INFO L124 PetriNetUnfolderBase]: 340/650 cut-off events. [2024-06-21 19:40:01,266 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2024-06-21 19:40:01,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1588 conditions, 650 events. 340/650 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3540 event pairs, 146 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 1574. Up to 500 conditions per place. [2024-06-21 19:40:01,273 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 39 selfloop transitions, 9 changer transitions 0/59 dead transitions. [2024-06-21 19:40:01,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 291 flow [2024-06-21 19:40:01,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:40:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:40:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-21 19:40:01,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-06-21 19:40:01,279 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 125 flow. Second operand 4 states and 102 transitions. [2024-06-21 19:40:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 291 flow [2024-06-21 19:40:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:40:01,283 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 174 flow [2024-06-21 19:40:01,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-06-21 19:40:01,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-21 19:40:01,285 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 174 flow [2024-06-21 19:40:01,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:40:01,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:01,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:01,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:40:01,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:01,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash 433496244, now seen corresponding path program 1 times [2024-06-21 19:40:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:01,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758140176] [2024-06-21 19:40:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:01,550 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 19:40:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758140176] [2024-06-21 19:40:01,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758140176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:01,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:01,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:40:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359298675] [2024-06-21 19:40:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:01,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:40:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:40:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:40:01,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:01,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 19:40:01,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:01,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:01,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:01,737 INFO L124 PetriNetUnfolderBase]: 332/641 cut-off events. [2024-06-21 19:40:01,737 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2024-06-21 19:40:01,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 641 events. 332/641 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3421 event pairs, 134 based on Foata normal form. 4/628 useless extension candidates. Maximal degree in co-relation 1720. Up to 494 conditions per place. [2024-06-21 19:40:01,742 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 38 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2024-06-21 19:40:01,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 302 flow [2024-06-21 19:40:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:40:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:40:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-21 19:40:01,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-21 19:40:01,744 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 174 flow. Second operand 4 states and 100 transitions. [2024-06-21 19:40:01,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 302 flow [2024-06-21 19:40:01,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 296 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-21 19:40:01,748 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 193 flow [2024-06-21 19:40:01,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-21 19:40:01,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-21 19:40:01,749 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 193 flow [2024-06-21 19:40:01,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 19:40:01,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:01,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:40:01,750 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:01,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1164991326, now seen corresponding path program 1 times [2024-06-21 19:40:01,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:01,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753346189] [2024-06-21 19:40:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:01,923 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 19:40:01,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:01,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753346189] [2024-06-21 19:40:01,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753346189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:01,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:01,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:40:01,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431939815] [2024-06-21 19:40:01,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:01,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:40:01,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:01,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:40:01,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:40:01,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:01,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 19:40:01,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:01,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:01,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:02,203 INFO L124 PetriNetUnfolderBase]: 558/1043 cut-off events. [2024-06-21 19:40:02,203 INFO L125 PetriNetUnfolderBase]: For 1425/1425 co-relation queries the response was YES. [2024-06-21 19:40:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2946 conditions, 1043 events. 558/1043 cut-off events. For 1425/1425 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6281 event pairs, 112 based on Foata normal form. 16/1035 useless extension candidates. Maximal degree in co-relation 2927. Up to 443 conditions per place. [2024-06-21 19:40:02,212 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 49 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-21 19:40:02,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 77 transitions, 453 flow [2024-06-21 19:40:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-21 19:40:02,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-21 19:40:02,214 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 193 flow. Second operand 5 states and 130 transitions. [2024-06-21 19:40:02,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 77 transitions, 453 flow [2024-06-21 19:40:02,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 436 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 19:40:02,219 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 303 flow [2024-06-21 19:40:02,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-21 19:40:02,220 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-21 19:40:02,220 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 303 flow [2024-06-21 19:40:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 19:40:02,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:02,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:02,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:40:02,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:02,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash 593065530, now seen corresponding path program 2 times [2024-06-21 19:40:02,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:02,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103956551] [2024-06-21 19:40:02,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:02,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:02,498 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 19:40:02,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:02,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103956551] [2024-06-21 19:40:02,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103956551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:02,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:40:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120548962] [2024-06-21 19:40:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:40:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:40:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:40:02,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:02,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 19:40:02,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:02,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:02,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:02,800 INFO L124 PetriNetUnfolderBase]: 597/1096 cut-off events. [2024-06-21 19:40:02,800 INFO L125 PetriNetUnfolderBase]: For 2740/2740 co-relation queries the response was YES. [2024-06-21 19:40:02,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3808 conditions, 1096 events. 597/1096 cut-off events. For 2740/2740 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6777 event pairs, 313 based on Foata normal form. 10/1060 useless extension candidates. Maximal degree in co-relation 3786. Up to 783 conditions per place. [2024-06-21 19:40:02,810 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 45 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-21 19:40:02,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 72 transitions, 515 flow [2024-06-21 19:40:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-21 19:40:02,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-21 19:40:02,812 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 303 flow. Second operand 5 states and 115 transitions. [2024-06-21 19:40:02,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 72 transitions, 515 flow [2024-06-21 19:40:02,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 72 transitions, 497 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-06-21 19:40:02,820 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 381 flow [2024-06-21 19:40:02,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-06-21 19:40:02,821 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-21 19:40:02,821 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 381 flow [2024-06-21 19:40:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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 19:40:02,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:02,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:02,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:40:02,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:02,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash 695971250, now seen corresponding path program 1 times [2024-06-21 19:40:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036682958] [2024-06-21 19:40:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:03,275 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 19:40:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036682958] [2024-06-21 19:40:03,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036682958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:03,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:03,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:40:03,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214482936] [2024-06-21 19:40:03,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:03,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:40:03,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:03,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:40:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:40:03,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-21 19:40:03,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 19:40:03,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:03,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-21 19:40:03,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:03,614 INFO L124 PetriNetUnfolderBase]: 608/1189 cut-off events. [2024-06-21 19:40:03,614 INFO L125 PetriNetUnfolderBase]: For 3525/3525 co-relation queries the response was YES. [2024-06-21 19:40:03,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 1189 events. 608/1189 cut-off events. For 3525/3525 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7507 event pairs, 71 based on Foata normal form. 26/1191 useless extension candidates. Maximal degree in co-relation 4145. Up to 514 conditions per place. [2024-06-21 19:40:03,625 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 52 selfloop transitions, 17 changer transitions 0/79 dead transitions. [2024-06-21 19:40:03,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 79 transitions, 608 flow [2024-06-21 19:40:03,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-21 19:40:03,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-21 19:40:03,627 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 381 flow. Second operand 5 states and 119 transitions. [2024-06-21 19:40:03,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 79 transitions, 608 flow [2024-06-21 19:40:03,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 599 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-21 19:40:03,637 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 443 flow [2024-06-21 19:40:03,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-06-21 19:40:03,638 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-21 19:40:03,638 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 443 flow [2024-06-21 19:40:03,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 19:40:03,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:03,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:03,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:40:03,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:03,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1461871536, now seen corresponding path program 2 times [2024-06-21 19:40:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893852941] [2024-06-21 19:40:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:04,166 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 19:40:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893852941] [2024-06-21 19:40:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893852941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:04,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140781440] [2024-06-21 19:40:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:04,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:04,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 443 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 19:40:04,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:04,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:04,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:04,621 INFO L124 PetriNetUnfolderBase]: 708/1404 cut-off events. [2024-06-21 19:40:04,622 INFO L125 PetriNetUnfolderBase]: For 4969/4969 co-relation queries the response was YES. [2024-06-21 19:40:04,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 1404 events. 708/1404 cut-off events. For 4969/4969 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9305 event pairs, 169 based on Foata normal form. 28/1401 useless extension candidates. Maximal degree in co-relation 4964. Up to 744 conditions per place. [2024-06-21 19:40:04,633 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 50 selfloop transitions, 31 changer transitions 0/92 dead transitions. [2024-06-21 19:40:04,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 758 flow [2024-06-21 19:40:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:40:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:40:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-21 19:40:04,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-06-21 19:40:04,635 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 443 flow. Second operand 6 states and 142 transitions. [2024-06-21 19:40:04,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 758 flow [2024-06-21 19:40:04,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 720 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 19:40:04,646 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 606 flow [2024-06-21 19:40:04,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-21 19:40:04,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-21 19:40:04,647 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 606 flow [2024-06-21 19:40:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 19:40:04,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:04,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:40:04,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:04,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash 230475772, now seen corresponding path program 3 times [2024-06-21 19:40:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:04,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925049691] [2024-06-21 19:40:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:04,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:05,121 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 19:40:05,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:05,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925049691] [2024-06-21 19:40:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925049691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:05,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864366755] [2024-06-21 19:40:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:05,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:05,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 19:40:05,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:05,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:05,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:05,465 INFO L124 PetriNetUnfolderBase]: 780/1658 cut-off events. [2024-06-21 19:40:05,465 INFO L125 PetriNetUnfolderBase]: For 6287/6287 co-relation queries the response was YES. [2024-06-21 19:40:05,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5829 conditions, 1658 events. 780/1658 cut-off events. For 6287/6287 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11974 event pairs, 210 based on Foata normal form. 20/1645 useless extension candidates. Maximal degree in co-relation 5800. Up to 550 conditions per place. [2024-06-21 19:40:05,479 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 54 selfloop transitions, 22 changer transitions 0/87 dead transitions. [2024-06-21 19:40:05,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 823 flow [2024-06-21 19:40:05,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:05,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-21 19:40:05,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-06-21 19:40:05,482 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 606 flow. Second operand 5 states and 116 transitions. [2024-06-21 19:40:05,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 823 flow [2024-06-21 19:40:05,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 808 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-21 19:40:05,494 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 679 flow [2024-06-21 19:40:05,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=679, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-06-21 19:40:05,495 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-21 19:40:05,495 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 679 flow [2024-06-21 19:40:05,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 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 19:40:05,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:05,496 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 19:40:05,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:40:05,496 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:05,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash 118209596, now seen corresponding path program 1 times [2024-06-21 19:40:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313159068] [2024-06-21 19:40:05,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:05,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:05,754 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 19:40:05,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:05,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313159068] [2024-06-21 19:40:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313159068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:05,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:40:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530433248] [2024-06-21 19:40:05,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:05,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:40:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:40:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:40:05,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:05,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 679 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:40:05,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:05,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:05,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:06,134 INFO L124 PetriNetUnfolderBase]: 765/1633 cut-off events. [2024-06-21 19:40:06,134 INFO L125 PetriNetUnfolderBase]: For 7876/7876 co-relation queries the response was YES. [2024-06-21 19:40:06,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6030 conditions, 1633 events. 765/1633 cut-off events. For 7876/7876 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11678 event pairs, 267 based on Foata normal form. 3/1598 useless extension candidates. Maximal degree in co-relation 5998. Up to 1130 conditions per place. [2024-06-21 19:40:06,147 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 72 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-21 19:40:06,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 104 transitions, 1121 flow [2024-06-21 19:40:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:06,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-21 19:40:06,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-06-21 19:40:06,148 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 679 flow. Second operand 5 states and 122 transitions. [2024-06-21 19:40:06,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 104 transitions, 1121 flow [2024-06-21 19:40:06,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 104 transitions, 1071 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-21 19:40:06,165 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 831 flow [2024-06-21 19:40:06,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=831, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-21 19:40:06,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-06-21 19:40:06,167 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 831 flow [2024-06-21 19:40:06,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:40:06,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:06,167 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 19:40:06,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:40:06,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:06,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash 696514720, now seen corresponding path program 1 times [2024-06-21 19:40:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93278974] [2024-06-21 19:40:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:06,533 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 19:40:06,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:06,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93278974] [2024-06-21 19:40:06,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93278974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:06,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:06,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:40:06,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851024389] [2024-06-21 19:40:06,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:06,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:40:06,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:06,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:40:06,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:40:06,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:06,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 831 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:40:06,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:06,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:06,867 INFO L124 PetriNetUnfolderBase]: 721/1508 cut-off events. [2024-06-21 19:40:06,867 INFO L125 PetriNetUnfolderBase]: For 7488/7488 co-relation queries the response was YES. [2024-06-21 19:40:06,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5737 conditions, 1508 events. 721/1508 cut-off events. For 7488/7488 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10530 event pairs, 209 based on Foata normal form. 6/1487 useless extension candidates. Maximal degree in co-relation 5703. Up to 1119 conditions per place. [2024-06-21 19:40:06,880 INFO L140 encePairwiseOnDemand]: 39/42 looper letters, 66 selfloop transitions, 7 changer transitions 3/87 dead transitions. [2024-06-21 19:40:06,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 1031 flow [2024-06-21 19:40:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:40:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:40:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-21 19:40:06,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-21 19:40:06,883 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 831 flow. Second operand 3 states and 73 transitions. [2024-06-21 19:40:06,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 1031 flow [2024-06-21 19:40:06,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 87 transitions, 994 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-21 19:40:06,899 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 761 flow [2024-06-21 19:40:06,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=761, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-06-21 19:40:06,900 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-21 19:40:06,900 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 761 flow [2024-06-21 19:40:06,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 19:40:06,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:06,901 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 19:40:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:40:06,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:06,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2045521490, now seen corresponding path program 1 times [2024-06-21 19:40:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:06,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055644451] [2024-06-21 19:40:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:06,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:07,370 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 19:40:07,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:07,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055644451] [2024-06-21 19:40:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055644451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:07,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:07,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038544257] [2024-06-21 19:40:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:07,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:07,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:07,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:07,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 761 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:07,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:07,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:07,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:07,777 INFO L124 PetriNetUnfolderBase]: 633/1330 cut-off events. [2024-06-21 19:40:07,777 INFO L125 PetriNetUnfolderBase]: For 6926/6926 co-relation queries the response was YES. [2024-06-21 19:40:07,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 1330 events. 633/1330 cut-off events. For 6926/6926 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8861 event pairs, 194 based on Foata normal form. 6/1309 useless extension candidates. Maximal degree in co-relation 5143. Up to 902 conditions per place. [2024-06-21 19:40:07,788 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 75 selfloop transitions, 24 changer transitions 2/112 dead transitions. [2024-06-21 19:40:07,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 112 transitions, 1189 flow [2024-06-21 19:40:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:40:07,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:40:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-21 19:40:07,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-21 19:40:07,790 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 761 flow. Second operand 6 states and 146 transitions. [2024-06-21 19:40:07,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 112 transitions, 1189 flow [2024-06-21 19:40:07,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 1175 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 19:40:07,803 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 857 flow [2024-06-21 19:40:07,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=857, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2024-06-21 19:40:07,804 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-06-21 19:40:07,804 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 857 flow [2024-06-21 19:40:07,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:07,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:07,805 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 19:40:07,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:40:07,805 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:07,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:07,806 INFO L85 PathProgramCache]: Analyzing trace with hash -630468100, now seen corresponding path program 2 times [2024-06-21 19:40:07,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523086559] [2024-06-21 19:40:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:08,160 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 19:40:08,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:08,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523086559] [2024-06-21 19:40:08,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523086559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:08,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753339882] [2024-06-21 19:40:08,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:08,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:08,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:08,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:08,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:08,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:08,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 857 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:08,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:08,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:08,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:08,505 INFO L124 PetriNetUnfolderBase]: 624/1308 cut-off events. [2024-06-21 19:40:08,506 INFO L125 PetriNetUnfolderBase]: For 7422/7422 co-relation queries the response was YES. [2024-06-21 19:40:08,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5257 conditions, 1308 events. 624/1308 cut-off events. For 7422/7422 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8663 event pairs, 197 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 5220. Up to 892 conditions per place. [2024-06-21 19:40:08,517 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 68 selfloop transitions, 23 changer transitions 1/103 dead transitions. [2024-06-21 19:40:08,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 1167 flow [2024-06-21 19:40:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-21 19:40:08,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-06-21 19:40:08,518 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 857 flow. Second operand 5 states and 122 transitions. [2024-06-21 19:40:08,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 1167 flow [2024-06-21 19:40:08,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 103 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:40:08,534 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 935 flow [2024-06-21 19:40:08,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=935, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2024-06-21 19:40:08,535 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-21 19:40:08,535 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 935 flow [2024-06-21 19:40:08,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:08,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:08,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:08,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:40:08,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:08,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1300945059, now seen corresponding path program 1 times [2024-06-21 19:40:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:08,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037972190] [2024-06-21 19:40:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:08,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:08,798 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 19:40:08,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:08,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037972190] [2024-06-21 19:40:08,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037972190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:08,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:08,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:08,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950637132] [2024-06-21 19:40:08,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:08,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:08,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:08,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:08,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 935 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:08,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:08,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:08,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:09,089 INFO L124 PetriNetUnfolderBase]: 567/1198 cut-off events. [2024-06-21 19:40:09,089 INFO L125 PetriNetUnfolderBase]: For 7945/7945 co-relation queries the response was YES. [2024-06-21 19:40:09,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 1198 events. 567/1198 cut-off events. For 7945/7945 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7922 event pairs, 113 based on Foata normal form. 30/1205 useless extension candidates. Maximal degree in co-relation 4731. Up to 561 conditions per place. [2024-06-21 19:40:09,099 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 61 selfloop transitions, 17 changer transitions 17/106 dead transitions. [2024-06-21 19:40:09,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 106 transitions, 1206 flow [2024-06-21 19:40:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:09,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-21 19:40:09,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-21 19:40:09,101 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 935 flow. Second operand 5 states and 125 transitions. [2024-06-21 19:40:09,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 106 transitions, 1206 flow [2024-06-21 19:40:09,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 106 transitions, 1154 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-21 19:40:09,118 INFO L231 Difference]: Finished difference. Result has 91 places, 69 transitions, 757 flow [2024-06-21 19:40:09,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=91, PETRI_TRANSITIONS=69} [2024-06-21 19:40:09,119 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-21 19:40:09,120 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 69 transitions, 757 flow [2024-06-21 19:40:09,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:09,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:09,120 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 19:40:09,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:40:09,120 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:09,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash -289395333, now seen corresponding path program 1 times [2024-06-21 19:40:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:09,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006614446] [2024-06-21 19:40:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:09,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:10,296 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 19:40:10,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:10,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006614446] [2024-06-21 19:40:10,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006614446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:10,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:10,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:40:10,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497425263] [2024-06-21 19:40:10,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:10,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:40:10,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:10,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:40:10,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:40:10,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-21 19:40:10,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 69 transitions, 757 flow. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 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 19:40:10,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:10,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-21 19:40:10,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:10,587 INFO L124 PetriNetUnfolderBase]: 411/887 cut-off events. [2024-06-21 19:40:10,587 INFO L125 PetriNetUnfolderBase]: For 5720/5720 co-relation queries the response was YES. [2024-06-21 19:40:10,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3593 conditions, 887 events. 411/887 cut-off events. For 5720/5720 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5387 event pairs, 102 based on Foata normal form. 4/874 useless extension candidates. Maximal degree in co-relation 3550. Up to 584 conditions per place. [2024-06-21 19:40:10,594 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 59 selfloop transitions, 16 changer transitions 3/88 dead transitions. [2024-06-21 19:40:10,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 957 flow [2024-06-21 19:40:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:40:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:40:10,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-21 19:40:10,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-21 19:40:10,596 INFO L175 Difference]: Start difference. First operand has 91 places, 69 transitions, 757 flow. Second operand 6 states and 128 transitions. [2024-06-21 19:40:10,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 957 flow [2024-06-21 19:40:10,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 837 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 19:40:10,610 INFO L231 Difference]: Finished difference. Result has 85 places, 66 transitions, 644 flow [2024-06-21 19:40:10,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=85, PETRI_TRANSITIONS=66} [2024-06-21 19:40:10,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2024-06-21 19:40:10,611 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 66 transitions, 644 flow [2024-06-21 19:40:10,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 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 19:40:10,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:10,612 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 19:40:10,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:40:10,612 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:10,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash -103820936, now seen corresponding path program 1 times [2024-06-21 19:40:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547815202] [2024-06-21 19:40:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:10,984 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 19:40:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547815202] [2024-06-21 19:40:10,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547815202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:10,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:10,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:40:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004473565] [2024-06-21 19:40:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:40:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:40:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:40:10,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:10,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 66 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:10,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:10,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:10,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:11,253 INFO L124 PetriNetUnfolderBase]: 402/858 cut-off events. [2024-06-21 19:40:11,253 INFO L125 PetriNetUnfolderBase]: For 4937/4937 co-relation queries the response was YES. [2024-06-21 19:40:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 858 events. 402/858 cut-off events. For 4937/4937 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5186 event pairs, 105 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 3214. Up to 359 conditions per place. [2024-06-21 19:40:11,262 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 60 selfloop transitions, 21 changer transitions 0/92 dead transitions. [2024-06-21 19:40:11,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 92 transitions, 896 flow [2024-06-21 19:40:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:40:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:40:11,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-21 19:40:11,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-21 19:40:11,264 INFO L175 Difference]: Start difference. First operand has 85 places, 66 transitions, 644 flow. Second operand 6 states and 141 transitions. [2024-06-21 19:40:11,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 92 transitions, 896 flow [2024-06-21 19:40:11,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 837 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 19:40:11,279 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 650 flow [2024-06-21 19:40:11,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2024-06-21 19:40:11,280 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2024-06-21 19:40:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 650 flow [2024-06-21 19:40:11,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 19:40:11,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:11,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:11,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:40:11,281 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:11,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 562382872, now seen corresponding path program 1 times [2024-06-21 19:40:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:11,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821815562] [2024-06-21 19:40:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:11,887 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 19:40:11,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:11,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821815562] [2024-06-21 19:40:11,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821815562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:11,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:11,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:40:11,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271598620] [2024-06-21 19:40:11,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:11,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:40:11,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:40:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:40:11,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2024-06-21 19:40:11,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 19:40:11,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:11,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2024-06-21 19:40:11,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:12,505 INFO L124 PetriNetUnfolderBase]: 666/1412 cut-off events. [2024-06-21 19:40:12,506 INFO L125 PetriNetUnfolderBase]: For 8235/8235 co-relation queries the response was YES. [2024-06-21 19:40:12,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5264 conditions, 1412 events. 666/1412 cut-off events. For 8235/8235 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9678 event pairs, 105 based on Foata normal form. 12/1408 useless extension candidates. Maximal degree in co-relation 5226. Up to 487 conditions per place. [2024-06-21 19:40:12,516 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 93 selfloop transitions, 31 changer transitions 6/140 dead transitions. [2024-06-21 19:40:12,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 140 transitions, 1294 flow [2024-06-21 19:40:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 19:40:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 19:40:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 270 transitions. [2024-06-21 19:40:12,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-06-21 19:40:12,518 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 650 flow. Second operand 13 states and 270 transitions. [2024-06-21 19:40:12,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 140 transitions, 1294 flow [2024-06-21 19:40:12,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 1251 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 19:40:12,535 INFO L231 Difference]: Finished difference. Result has 100 places, 76 transitions, 811 flow [2024-06-21 19:40:12,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=811, PETRI_PLACES=100, PETRI_TRANSITIONS=76} [2024-06-21 19:40:12,536 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-21 19:40:12,536 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 76 transitions, 811 flow [2024-06-21 19:40:12,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 19:40:12,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:12,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:12,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:40:12,537 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:12,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:12,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1610576604, now seen corresponding path program 2 times [2024-06-21 19:40:12,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:12,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033043570] [2024-06-21 19:40:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:13,195 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 19:40:13,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033043570] [2024-06-21 19:40:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033043570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:40:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899434710] [2024-06-21 19:40:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:13,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:40:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:40:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:40:13,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:13,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 76 transitions, 811 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 19:40:13,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:13,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:13,522 INFO L124 PetriNetUnfolderBase]: 538/1164 cut-off events. [2024-06-21 19:40:13,523 INFO L125 PetriNetUnfolderBase]: For 7810/7814 co-relation queries the response was YES. [2024-06-21 19:40:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 1164 events. 538/1164 cut-off events. For 7810/7814 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7735 event pairs, 89 based on Foata normal form. 36/1181 useless extension candidates. Maximal degree in co-relation 4313. Up to 359 conditions per place. [2024-06-21 19:40:13,531 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 48 selfloop transitions, 14 changer transitions 22/95 dead transitions. [2024-06-21 19:40:13,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 1029 flow [2024-06-21 19:40:13,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:13,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:13,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-21 19:40:13,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-21 19:40:13,533 INFO L175 Difference]: Start difference. First operand has 100 places, 76 transitions, 811 flow. Second operand 5 states and 117 transitions. [2024-06-21 19:40:13,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 1029 flow [2024-06-21 19:40:13,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 961 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 19:40:13,549 INFO L231 Difference]: Finished difference. Result has 98 places, 58 transitions, 568 flow [2024-06-21 19:40:13,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=98, PETRI_TRANSITIONS=58} [2024-06-21 19:40:13,550 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-21 19:40:13,550 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 58 transitions, 568 flow [2024-06-21 19:40:13,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 19:40:13,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:40:13,551 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] [2024-06-21 19:40:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:40:13,551 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 19:40:13,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:40:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1460276921, now seen corresponding path program 1 times [2024-06-21 19:40:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:40:13,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635995462] [2024-06-21 19:40:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:40:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:40:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:40:14,480 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 19:40:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:40:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635995462] [2024-06-21 19:40:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635995462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:40:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:40:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:40:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894817191] [2024-06-21 19:40:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:40:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:40:14,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:40:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:40:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:40:14,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 42 [2024-06-21 19:40:14,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 58 transitions, 568 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 19:40:14,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:40:14,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 42 [2024-06-21 19:40:14,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:40:14,677 INFO L124 PetriNetUnfolderBase]: 236/534 cut-off events. [2024-06-21 19:40:14,677 INFO L125 PetriNetUnfolderBase]: For 3230/3230 co-relation queries the response was YES. [2024-06-21 19:40:14,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 534 events. 236/534 cut-off events. For 3230/3230 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2886 event pairs, 45 based on Foata normal form. 12/536 useless extension candidates. Maximal degree in co-relation 1906. Up to 326 conditions per place. [2024-06-21 19:40:14,680 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2024-06-21 19:40:14,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 69 transitions, 690 flow [2024-06-21 19:40:14,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:40:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:40:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-21 19:40:14,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-21 19:40:14,682 INFO L175 Difference]: Start difference. First operand has 98 places, 58 transitions, 568 flow. Second operand 5 states and 106 transitions. [2024-06-21 19:40:14,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 69 transitions, 690 flow [2024-06-21 19:40:14,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 491 flow, removed 8 selfloop flow, removed 31 redundant places. [2024-06-21 19:40:14,687 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2024-06-21 19:40:14,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2024-06-21 19:40:14,688 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2024-06-21 19:40:14,688 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2024-06-21 19:40:14,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 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 19:40:14,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 19:40:14,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 19:40:14,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 19:40:14,691 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 19:40:14,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 19:40:14,692 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 19:40:14,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:40:14,692 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:40:14,695 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 19:40:14,695 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 19:40:14,699 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 19:40:14,699 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 19:40:14,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 07:40:14 BasicIcfg [2024-06-21 19:40:14,701 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 19:40:14,703 INFO L158 Benchmark]: Toolchain (without parser) took 17192.01ms. Allocated memory was 165.7MB in the beginning and 675.3MB in the end (delta: 509.6MB). Free memory was 104.4MB in the beginning and 363.3MB in the end (delta: -258.9MB). Peak memory consumption was 253.1MB. Max. memory is 16.1GB. [2024-06-21 19:40:14,703 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 165.7MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:40:14,703 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 19:40:14,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 634.74ms. Allocated memory is still 165.7MB. Free memory was 104.4MB in the beginning and 74.4MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-06-21 19:40:14,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.72ms. Allocated memory is still 165.7MB. Free memory was 74.4MB in the beginning and 72.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:40:14,704 INFO L158 Benchmark]: Boogie Preprocessor took 81.30ms. Allocated memory is still 165.7MB. Free memory was 71.5MB in the beginning and 68.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 19:40:14,704 INFO L158 Benchmark]: RCFGBuilder took 1077.45ms. Allocated memory is still 165.7MB. Free memory was 68.1MB in the beginning and 68.2MB in the end (delta: -152.4kB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 19:40:14,705 INFO L158 Benchmark]: TraceAbstraction took 15337.68ms. Allocated memory was 165.7MB in the beginning and 675.3MB in the end (delta: 509.6MB). Free memory was 67.4MB in the beginning and 363.3MB in the end (delta: -295.9MB). Peak memory consumption was 215.6MB. Max. memory is 16.1GB. [2024-06-21 19:40:14,706 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 165.7MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 634.74ms. Allocated memory is still 165.7MB. Free memory was 104.4MB in the beginning and 74.4MB in the end (delta: 30.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.72ms. Allocated memory is still 165.7MB. Free memory was 74.4MB in the beginning and 72.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.30ms. Allocated memory is still 165.7MB. Free memory was 71.5MB in the beginning and 68.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1077.45ms. Allocated memory is still 165.7MB. Free memory was 68.1MB in the beginning and 68.2MB in the end (delta: -152.4kB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15337.68ms. Allocated memory was 165.7MB in the beginning and 675.3MB in the end (delta: 509.6MB). Free memory was 67.4MB in the beginning and 363.3MB in the end (delta: -295.9MB). Peak memory consumption was 215.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 852]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 854]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 855]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 15.2s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 648 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 647 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 189 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1927 IncrementalHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 189 mSolverCounterUnsat, 2 mSDtfsCounter, 1927 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=935occurred in iteration=13, InterpolantAutomatonStates: 99, 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, 7.9s InterpolantComputationTime, 312 NumberOfCodeBlocks, 312 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 5032 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 19:40:14,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE