./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:50:55,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:50:55,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:50:55,450 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:50:55,455 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:50:55,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:50:55,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:50:55,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:50:55,471 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:50:55,471 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:50:55,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:50:55,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:50:55,472 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:50:55,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:50:55,473 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:50:55,473 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:50:55,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:50:55,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:50:55,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:50:55,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:50:55,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:50:55,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:50:55,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:50:55,476 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:50:55,476 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:50:55,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:50:55,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:50:55,477 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:50:55,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:50:55,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:50:55,478 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:50:55,478 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:50:55,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:50:55,478 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:50:55,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:50:55,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:50:55,479 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:50:55,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:50:55,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:50:55,480 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:50:55,480 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:50:55,484 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:50:55,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:50:55,484 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:50:55,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:50:55,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:50:55,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:50:55,699 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:50:55,699 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:50:55,699 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:56,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:50:56,848 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:50:56,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:56,864 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd64c9e74/cd6c10755af9486181eb6ea71f375a39/FLAG8461ab9db [2024-06-27 21:50:56,878 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd64c9e74/cd6c10755af9486181eb6ea71f375a39 [2024-06-27 21:50:56,881 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:50:56,881 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:50:56,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 21:50:56,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:50:56,956 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:50:56,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:50:56,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:50:56,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:50:56,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:50:56" (1/2) ... [2024-06-27 21:50:56,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2886677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:50:56, skipping insertion in model container [2024-06-27 21:50:56,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:50:56" (1/2) ... [2024-06-27 21:50:56,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32283572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:50:56, skipping insertion in model container [2024-06-27 21:50:56,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:56" (2/2) ... [2024-06-27 21:50:56,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2886677f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:56, skipping insertion in model container [2024-06-27 21:50:56,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:56" (2/2) ... [2024-06-27 21:50:56,966 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:50:56,988 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:50:56,989 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:56,989 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:56,989 INFO L97 edCorrectnessWitness]: Location invariant before [L791-L791] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:56,990 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:56,990 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:50:56,990 INFO L106 edCorrectnessWitness]: ghost_update [L789-L789] multithreaded = 1; [2024-06-27 21:50:57,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:50:57,167 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-06-27 21:50:57,321 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:50:57,328 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:50:57,356 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:50:57,396 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:50:57,443 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:50:57,444 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57 WrapperNode [2024-06-27 21:50:57,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:50:57,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:50:57,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:50:57,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:50:57,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,472 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,495 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2024-06-27 21:50:57,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:50:57,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:50:57,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:50:57,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:50:57,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,534 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:50:57,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:50:57,557 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:50:57,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:50:57,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:50:57,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (1/1) ... [2024-06-27 21:50:57,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:50:57,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:50:57,583 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) [2024-06-27 21:50:57,604 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 [2024-06-27 21:50:57,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:50:57,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:50:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:50:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:50:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:50:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:50:57,617 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:50:57,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:50:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 21:50:57,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 21:50:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:50:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:50:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:50:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:50:57,620 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:50:57,739 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:50:57,741 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:50:57,851 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:50:57,851 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:50:57,912 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:50:57,912 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:50:57,913 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:50:57 BoogieIcfgContainer [2024-06-27 21:50:57,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:50:57,914 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:50:57,914 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:50:57,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:50:57,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:50:56" (1/4) ... [2024-06-27 21:50:57,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e71e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:50:57, skipping insertion in model container [2024-06-27 21:50:57,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:56" (2/4) ... [2024-06-27 21:50:57,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e71e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:50:57, skipping insertion in model container [2024-06-27 21:50:57,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:57" (3/4) ... [2024-06-27 21:50:57,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588e71e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:50:57, skipping insertion in model container [2024-06-27 21:50:57,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:50:57" (4/4) ... [2024-06-27 21:50:57,919 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:57,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:50:57,938 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 21:50:57,938 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:50:57,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:50:57,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 54 transitions, 124 flow [2024-06-27 21:50:58,016 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-06-27 21:50:58,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:50:58,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-06-27 21:50:58,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 54 transitions, 124 flow [2024-06-27 21:50:58,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 106 flow [2024-06-27 21:50:58,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:50:58,031 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;@52aeb20a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:50:58,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 21:50:58,034 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:50:58,036 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 21:50:58,036 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:50:58,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:58,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:50:58,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:50:58,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash 220070101, now seen corresponding path program 1 times [2024-06-27 21:50:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:58,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828724559] [2024-06-27 21:50:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:58,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:58,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828724559] [2024-06-27 21:50:58,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828724559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:58,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:58,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:50:58,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324381661] [2024-06-27 21:50:58,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:58,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:50:58,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:50:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:50:58,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2024-06-27 21:50:58,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-06-27 21:50:58,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:58,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2024-06-27 21:50:58,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:58,514 INFO L124 PetriNetUnfolderBase]: 317/636 cut-off events. [2024-06-27 21:50:58,514 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-06-27 21:50:58,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186 conditions, 636 events. 317/636 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3513 event pairs, 223 based on Foata normal form. 8/601 useless extension candidates. Maximal degree in co-relation 1173. Up to 387 conditions per place. [2024-06-27 21:50:58,524 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 32 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-06-27 21:50:58,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 202 flow [2024-06-27 21:50:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:50:58,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:50:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-06-27 21:50:58,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2024-06-27 21:50:58,535 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 106 flow. Second operand 3 states and 125 transitions. [2024-06-27 21:50:58,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 202 flow [2024-06-27 21:50:58,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:58,543 INFO L231 Difference]: Finished difference. Result has 58 places, 46 transitions, 112 flow [2024-06-27 21:50:58,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=46} [2024-06-27 21:50:58,547 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-06-27 21:50:58,547 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 46 transitions, 112 flow [2024-06-27 21:50:58,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-06-27 21:50:58,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:58,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:58,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:50:58,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:50:58,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:58,551 INFO L85 PathProgramCache]: Analyzing trace with hash -252784099, now seen corresponding path program 1 times [2024-06-27 21:50:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373420075] [2024-06-27 21:50:58,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:58,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:58,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373420075] [2024-06-27 21:50:58,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373420075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:58,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:58,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:50:58,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196691619] [2024-06-27 21:50:58,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:58,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:50:58,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:50:58,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:50:58,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:50:58,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-06-27 21:50:58,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:58,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:50:58,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:58,832 INFO L124 PetriNetUnfolderBase]: 795/1617 cut-off events. [2024-06-27 21:50:58,833 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2024-06-27 21:50:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3151 conditions, 1617 events. 795/1617 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10993 event pairs, 255 based on Foata normal form. 8/1576 useless extension candidates. Maximal degree in co-relation 3139. Up to 1101 conditions per place. [2024-06-27 21:50:58,842 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 47 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-06-27 21:50:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 289 flow [2024-06-27 21:50:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-06-27 21:50:58,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-06-27 21:50:58,848 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 112 flow. Second operand 4 states and 164 transitions. [2024-06-27 21:50:58,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 289 flow [2024-06-27 21:50:58,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:50:58,851 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 150 flow [2024-06-27 21:50:58,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-27 21:50:58,852 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2024-06-27 21:50:58,854 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 150 flow [2024-06-27 21:50:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2024-06-27 21:50:58,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:58,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:58,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:50:58,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:50:58,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:58,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1360871082, now seen corresponding path program 1 times [2024-06-27 21:50:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:58,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870000753] [2024-06-27 21:50:58,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:58,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:59,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:59,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870000753] [2024-06-27 21:50:59,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870000753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:59,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:59,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:59,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656268630] [2024-06-27 21:50:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:59,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:59,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:59,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:59,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:50:59,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-06-27 21:50:59,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:59,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:50:59,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:59,292 INFO L124 PetriNetUnfolderBase]: 1147/2313 cut-off events. [2024-06-27 21:50:59,293 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2024-06-27 21:50:59,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4895 conditions, 2313 events. 1147/2313 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16557 event pairs, 308 based on Foata normal form. 52/2299 useless extension candidates. Maximal degree in co-relation 4881. Up to 835 conditions per place. [2024-06-27 21:50:59,304 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 51 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-06-27 21:50:59,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 340 flow [2024-06-27 21:50:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-06-27 21:50:59,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2024-06-27 21:50:59,321 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 150 flow. Second operand 4 states and 164 transitions. [2024-06-27 21:50:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 340 flow [2024-06-27 21:50:59,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 21:50:59,325 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 188 flow [2024-06-27 21:50:59,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-27 21:50:59,326 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2024-06-27 21:50:59,326 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 188 flow [2024-06-27 21:50:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-06-27 21:50:59,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:59,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:59,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:50:59,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:50:59,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1788072894, now seen corresponding path program 2 times [2024-06-27 21:50:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:59,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294365353] [2024-06-27 21:50:59,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:59,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:59,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:59,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:59,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294365353] [2024-06-27 21:50:59,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294365353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644687184] [2024-06-27 21:50:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:59,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:59,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:50:59,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-06-27 21:50:59,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:59,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:50:59,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:59,638 INFO L124 PetriNetUnfolderBase]: 1115/2283 cut-off events. [2024-06-27 21:50:59,638 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2024-06-27 21:50:59,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 2283 events. 1115/2283 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16471 event pairs, 281 based on Foata normal form. 16/2241 useless extension candidates. Maximal degree in co-relation 5323. Up to 1225 conditions per place. [2024-06-27 21:50:59,654 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 55 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-06-27 21:50:59,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 396 flow [2024-06-27 21:50:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-06-27 21:50:59,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 21:50:59,656 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 188 flow. Second operand 5 states and 198 transitions. [2024-06-27 21:50:59,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 396 flow [2024-06-27 21:50:59,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:59,662 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 209 flow [2024-06-27 21:50:59,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-27 21:50:59,664 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 7 predicate places. [2024-06-27 21:50:59,664 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 209 flow [2024-06-27 21:50:59,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 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) [2024-06-27 21:50:59,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:59,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:59,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:50:59,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:50:59,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash -756546380, now seen corresponding path program 1 times [2024-06-27 21:50:59,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:59,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436487202] [2024-06-27 21:50:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:59,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436487202] [2024-06-27 21:50:59,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436487202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:59,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:59,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026570656] [2024-06-27 21:50:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:59,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:59,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:50:59,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2024-06-27 21:50:59,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:59,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:50:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:59,961 INFO L124 PetriNetUnfolderBase]: 1087/2259 cut-off events. [2024-06-27 21:50:59,961 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-27 21:50:59,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 2259 events. 1087/2259 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16821 event pairs, 291 based on Foata normal form. 12/2207 useless extension candidates. Maximal degree in co-relation 5409. Up to 1269 conditions per place. [2024-06-27 21:50:59,974 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 60 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2024-06-27 21:50:59,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 444 flow [2024-06-27 21:50:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-06-27 21:50:59,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-06-27 21:50:59,976 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 209 flow. Second operand 5 states and 200 transitions. [2024-06-27 21:50:59,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 444 flow [2024-06-27 21:50:59,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 91 transitions, 428 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 21:50:59,979 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 239 flow [2024-06-27 21:50:59,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=239, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-06-27 21:50:59,980 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 12 predicate places. [2024-06-27 21:50:59,980 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 239 flow [2024-06-27 21:50:59,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2024-06-27 21:50:59,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:59,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:59,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:50:59,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:50:59,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:59,981 INFO L85 PathProgramCache]: Analyzing trace with hash 536699649, now seen corresponding path program 1 times [2024-06-27 21:50:59,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:59,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113739243] [2024-06-27 21:50:59,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:59,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:00,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:00,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113739243] [2024-06-27 21:51:00,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113739243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:00,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:00,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:00,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168440955] [2024-06-27 21:51:00,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:00,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:00,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:00,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:51:00,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2024-06-27 21:51:00,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:00,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:51:00,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:00,274 INFO L124 PetriNetUnfolderBase]: 1235/2563 cut-off events. [2024-06-27 21:51:00,274 INFO L125 PetriNetUnfolderBase]: For 2284/2284 co-relation queries the response was YES. [2024-06-27 21:51:00,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 2563 events. 1235/2563 cut-off events. For 2284/2284 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19496 event pairs, 233 based on Foata normal form. 24/2532 useless extension candidates. Maximal degree in co-relation 6046. Up to 606 conditions per place. [2024-06-27 21:51:00,289 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 59 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-27 21:51:00,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 91 transitions, 457 flow [2024-06-27 21:51:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:00,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-06-27 21:51:00,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.737037037037037 [2024-06-27 21:51:00,290 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 239 flow. Second operand 5 states and 199 transitions. [2024-06-27 21:51:00,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 91 transitions, 457 flow [2024-06-27 21:51:00,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 437 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:00,295 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 246 flow [2024-06-27 21:51:00,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-06-27 21:51:00,296 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 15 predicate places. [2024-06-27 21:51:00,296 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 246 flow [2024-06-27 21:51:00,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2024-06-27 21:51:00,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:00,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:00,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:51:00,297 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:00,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash -617934491, now seen corresponding path program 2 times [2024-06-27 21:51:00,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:00,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778275375] [2024-06-27 21:51:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:00,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:00,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:00,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:00,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778275375] [2024-06-27 21:51:00,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778275375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:00,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:00,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:00,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810803699] [2024-06-27 21:51:00,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:00,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:00,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:00,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:00,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:00,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:51:00,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2024-06-27 21:51:00,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:00,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:51:00,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:00,630 INFO L124 PetriNetUnfolderBase]: 1383/2902 cut-off events. [2024-06-27 21:51:00,630 INFO L125 PetriNetUnfolderBase]: For 3302/3302 co-relation queries the response was YES. [2024-06-27 21:51:00,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 2902 events. 1383/2902 cut-off events. For 3302/3302 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 22579 event pairs, 456 based on Foata normal form. 24/2868 useless extension candidates. Maximal degree in co-relation 6622. Up to 1004 conditions per place. [2024-06-27 21:51:00,647 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 61 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2024-06-27 21:51:00,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 91 transitions, 464 flow [2024-06-27 21:51:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-06-27 21:51:00,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-06-27 21:51:00,649 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 246 flow. Second operand 5 states and 198 transitions. [2024-06-27 21:51:00,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 91 transitions, 464 flow [2024-06-27 21:51:00,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 438 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 21:51:00,653 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 241 flow [2024-06-27 21:51:00,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-06-27 21:51:00,655 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 15 predicate places. [2024-06-27 21:51:00,655 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 241 flow [2024-06-27 21:51:00,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2024-06-27 21:51:00,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:00,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:00,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:51:00,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:00,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash -292924601, now seen corresponding path program 3 times [2024-06-27 21:51:00,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:00,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112454827] [2024-06-27 21:51:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:00,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:00,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112454827] [2024-06-27 21:51:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112454827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:00,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:00,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896581137] [2024-06-27 21:51:00,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:00,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:00,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:51:00,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2024-06-27 21:51:00,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:00,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:51:00,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:00,962 INFO L124 PetriNetUnfolderBase]: 1531/3239 cut-off events. [2024-06-27 21:51:00,962 INFO L125 PetriNetUnfolderBase]: For 2921/2921 co-relation queries the response was YES. [2024-06-27 21:51:00,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7167 conditions, 3239 events. 1531/3239 cut-off events. For 2921/2921 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 26573 event pairs, 259 based on Foata normal form. 24/3208 useless extension candidates. Maximal degree in co-relation 7145. Up to 1102 conditions per place. [2024-06-27 21:51:00,975 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 58 selfloop transitions, 8 changer transitions 0/88 dead transitions. [2024-06-27 21:51:00,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 445 flow [2024-06-27 21:51:00,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:00,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:00,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-06-27 21:51:00,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-06-27 21:51:00,976 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 241 flow. Second operand 5 states and 195 transitions. [2024-06-27 21:51:00,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 445 flow [2024-06-27 21:51:00,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 430 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:00,980 INFO L231 Difference]: Finished difference. Result has 77 places, 56 transitions, 247 flow [2024-06-27 21:51:00,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=247, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2024-06-27 21:51:00,981 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 17 predicate places. [2024-06-27 21:51:00,981 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 247 flow [2024-06-27 21:51:00,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2024-06-27 21:51:00,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:00,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:51:00,982 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash -744561787, now seen corresponding path program 4 times [2024-06-27 21:51:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456148811] [2024-06-27 21:51:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:01,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:01,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:01,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456148811] [2024-06-27 21:51:01,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456148811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:01,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:01,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:01,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010227941] [2024-06-27 21:51:01,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:01,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:01,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:01,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2024-06-27 21:51:01,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 247 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2024-06-27 21:51:01,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:01,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2024-06-27 21:51:01,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:01,261 INFO L124 PetriNetUnfolderBase]: 1487/3067 cut-off events. [2024-06-27 21:51:01,262 INFO L125 PetriNetUnfolderBase]: For 2880/2880 co-relation queries the response was YES. [2024-06-27 21:51:01,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6846 conditions, 3067 events. 1487/3067 cut-off events. For 2880/2880 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 24075 event pairs, 257 based on Foata normal form. 24/3034 useless extension candidates. Maximal degree in co-relation 6823. Up to 959 conditions per place. [2024-06-27 21:51:01,277 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 57 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-06-27 21:51:01,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 433 flow [2024-06-27 21:51:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-06-27 21:51:01,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7296296296296296 [2024-06-27 21:51:01,279 INFO L175 Difference]: Start difference. First operand has 77 places, 56 transitions, 247 flow. Second operand 5 states and 197 transitions. [2024-06-27 21:51:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 433 flow [2024-06-27 21:51:01,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 398 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 21:51:01,282 INFO L231 Difference]: Finished difference. Result has 70 places, 54 transitions, 204 flow [2024-06-27 21:51:01,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=70, PETRI_TRANSITIONS=54} [2024-06-27 21:51:01,283 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-06-27 21:51:01,283 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 54 transitions, 204 flow [2024-06-27 21:51:01,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2024-06-27 21:51:01,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:01,284 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] [2024-06-27 21:51:01,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:51:01,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:01,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash 895624402, now seen corresponding path program 1 times [2024-06-27 21:51:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168374291] [2024-06-27 21:51:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:01,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:01,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:01,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168374291] [2024-06-27 21:51:01,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168374291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:01,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:01,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:01,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438829785] [2024-06-27 21:51:01,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:01,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:01,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:01,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:01,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:01,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-06-27 21:51:01,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 54 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2024-06-27 21:51:01,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:01,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-06-27 21:51:01,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:02,419 INFO L124 PetriNetUnfolderBase]: 8529/15096 cut-off events. [2024-06-27 21:51:02,420 INFO L125 PetriNetUnfolderBase]: For 5142/5147 co-relation queries the response was YES. [2024-06-27 21:51:02,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30386 conditions, 15096 events. 8529/15096 cut-off events. For 5142/5147 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 136294 event pairs, 3488 based on Foata normal form. 434/15105 useless extension candidates. Maximal degree in co-relation 30368. Up to 6261 conditions per place. [2024-06-27 21:51:02,479 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 48 selfloop transitions, 9 changer transitions 59/137 dead transitions. [2024-06-27 21:51:02,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 137 transitions, 773 flow [2024-06-27 21:51:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:51:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:51:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-06-27 21:51:02,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7063492063492064 [2024-06-27 21:51:02,481 INFO L175 Difference]: Start difference. First operand has 70 places, 54 transitions, 204 flow. Second operand 7 states and 267 transitions. [2024-06-27 21:51:02,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 137 transitions, 773 flow [2024-06-27 21:51:02,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 721 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:51:02,484 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 296 flow [2024-06-27 21:51:02,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=296, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-27 21:51:02,486 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 17 predicate places. [2024-06-27 21:51:02,486 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 296 flow [2024-06-27 21:51:02,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2024-06-27 21:51:02,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:02,486 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] [2024-06-27 21:51:02,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:51:02,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:02,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:02,488 INFO L85 PathProgramCache]: Analyzing trace with hash -543662189, now seen corresponding path program 1 times [2024-06-27 21:51:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189091143] [2024-06-27 21:51:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:02,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:02,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:02,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189091143] [2024-06-27 21:51:02,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189091143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:02,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:02,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:02,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414745129] [2024-06-27 21:51:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:02,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:02,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:02,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-06-27 21:51:02,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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) [2024-06-27 21:51:02,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:02,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-06-27 21:51:02,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:03,463 INFO L124 PetriNetUnfolderBase]: 6398/11583 cut-off events. [2024-06-27 21:51:03,464 INFO L125 PetriNetUnfolderBase]: For 13976/14026 co-relation queries the response was YES. [2024-06-27 21:51:03,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30447 conditions, 11583 events. 6398/11583 cut-off events. For 13976/14026 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 101906 event pairs, 1386 based on Foata normal form. 356/11793 useless extension candidates. Maximal degree in co-relation 30424. Up to 4439 conditions per place. [2024-06-27 21:51:03,517 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 49 selfloop transitions, 14 changer transitions 66/150 dead transitions. [2024-06-27 21:51:03,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 150 transitions, 1014 flow [2024-06-27 21:51:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:51:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:51:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 361 transitions. [2024-06-27 21:51:03,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6685185185185185 [2024-06-27 21:51:03,519 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 296 flow. Second operand 10 states and 361 transitions. [2024-06-27 21:51:03,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 150 transitions, 1014 flow [2024-06-27 21:51:03,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 150 transitions, 977 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:03,557 INFO L231 Difference]: Finished difference. Result has 87 places, 63 transitions, 359 flow [2024-06-27 21:51:03,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=359, PETRI_PLACES=87, PETRI_TRANSITIONS=63} [2024-06-27 21:51:03,558 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 27 predicate places. [2024-06-27 21:51:03,558 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 63 transitions, 359 flow [2024-06-27 21:51:03,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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) [2024-06-27 21:51:03,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:03,559 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] [2024-06-27 21:51:03,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:51:03,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:03,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:03,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1090392755, now seen corresponding path program 1 times [2024-06-27 21:51:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889951929] [2024-06-27 21:51:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:03,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:03,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889951929] [2024-06-27 21:51:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889951929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:03,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:03,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:51:03,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362577233] [2024-06-27 21:51:03,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:03,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:51:03,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:03,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:51:03,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:51:03,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-06-27 21:51:03,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 63 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 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) [2024-06-27 21:51:03,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:03,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-06-27 21:51:03,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:04,759 INFO L124 PetriNetUnfolderBase]: 7536/13276 cut-off events. [2024-06-27 21:51:04,760 INFO L125 PetriNetUnfolderBase]: For 27645/27647 co-relation queries the response was YES. [2024-06-27 21:51:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40714 conditions, 13276 events. 7536/13276 cut-off events. For 27645/27647 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 111465 event pairs, 1200 based on Foata normal form. 227/13435 useless extension candidates. Maximal degree in co-relation 40683. Up to 4771 conditions per place. [2024-06-27 21:51:04,947 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 77 selfloop transitions, 39 changer transitions 86/218 dead transitions. [2024-06-27 21:51:04,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 218 transitions, 1671 flow [2024-06-27 21:51:04,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 21:51:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 21:51:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 441 transitions. [2024-06-27 21:51:04,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 21:51:04,949 INFO L175 Difference]: Start difference. First operand has 87 places, 63 transitions, 359 flow. Second operand 14 states and 441 transitions. [2024-06-27 21:51:04,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 218 transitions, 1671 flow [2024-06-27 21:51:05,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 218 transitions, 1532 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-27 21:51:05,024 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 752 flow [2024-06-27 21:51:05,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=752, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-06-27 21:51:05,025 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 40 predicate places. [2024-06-27 21:51:05,025 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 752 flow [2024-06-27 21:51:05,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 8 states have internal predecessors, (179), 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) [2024-06-27 21:51:05,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:05,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:05,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:51:05,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:05,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:05,027 INFO L85 PathProgramCache]: Analyzing trace with hash 327532886, now seen corresponding path program 1 times [2024-06-27 21:51:05,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:05,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533941863] [2024-06-27 21:51:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:05,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:05,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:05,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533941863] [2024-06-27 21:51:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533941863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:05,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:05,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426674848] [2024-06-27 21:51:05,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:05,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:51:05,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:05,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:51:05,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:51:05,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2024-06-27 21:51:05,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 752 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2024-06-27 21:51:05,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:05,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2024-06-27 21:51:05,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:06,137 INFO L124 PetriNetUnfolderBase]: 6723/11953 cut-off events. [2024-06-27 21:51:06,138 INFO L125 PetriNetUnfolderBase]: For 56506/56521 co-relation queries the response was YES. [2024-06-27 21:51:06,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44070 conditions, 11953 events. 6723/11953 cut-off events. For 56506/56521 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 99351 event pairs, 1338 based on Foata normal form. 165/11988 useless extension candidates. Maximal degree in co-relation 44031. Up to 2883 conditions per place. [2024-06-27 21:51:06,191 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 68 selfloop transitions, 15 changer transitions 81/181 dead transitions. [2024-06-27 21:51:06,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 181 transitions, 1858 flow [2024-06-27 21:51:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:51:06,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:51:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 332 transitions. [2024-06-27 21:51:06,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6831275720164609 [2024-06-27 21:51:06,193 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 752 flow. Second operand 9 states and 332 transitions. [2024-06-27 21:51:06,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 181 transitions, 1858 flow [2024-06-27 21:51:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 181 transitions, 1648 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-06-27 21:51:06,367 INFO L231 Difference]: Finished difference. Result has 97 places, 67 transitions, 492 flow [2024-06-27 21:51:06,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=492, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2024-06-27 21:51:06,368 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 37 predicate places. [2024-06-27 21:51:06,368 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 492 flow [2024-06-27 21:51:06,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 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) [2024-06-27 21:51:06,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:06,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:51:06,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:06,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash 380511438, now seen corresponding path program 1 times [2024-06-27 21:51:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059243247] [2024-06-27 21:51:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:06,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:06,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059243247] [2024-06-27 21:51:06,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059243247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:06,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:06,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543578645] [2024-06-27 21:51:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:06,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:06,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:06,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-06-27 21:51:06,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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) [2024-06-27 21:51:06,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:06,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-06-27 21:51:06,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:07,119 INFO L124 PetriNetUnfolderBase]: 4203/7977 cut-off events. [2024-06-27 21:51:07,119 INFO L125 PetriNetUnfolderBase]: For 22250/22293 co-relation queries the response was YES. [2024-06-27 21:51:07,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25050 conditions, 7977 events. 4203/7977 cut-off events. For 22250/22293 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 67271 event pairs, 469 based on Foata normal form. 252/8123 useless extension candidates. Maximal degree in co-relation 25026. Up to 2606 conditions per place. [2024-06-27 21:51:07,160 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 62 selfloop transitions, 11 changer transitions 46/140 dead transitions. [2024-06-27 21:51:07,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 140 transitions, 1226 flow [2024-06-27 21:51:07,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:51:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:51:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2024-06-27 21:51:07,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 21:51:07,162 INFO L175 Difference]: Start difference. First operand has 97 places, 67 transitions, 492 flow. Second operand 10 states and 360 transitions. [2024-06-27 21:51:07,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 140 transitions, 1226 flow [2024-06-27 21:51:07,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 1025 flow, removed 22 selfloop flow, removed 17 redundant places. [2024-06-27 21:51:07,197 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 441 flow [2024-06-27 21:51:07,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2024-06-27 21:51:07,197 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 32 predicate places. [2024-06-27 21:51:07,197 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 441 flow [2024-06-27 21:51:07,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 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) [2024-06-27 21:51:07,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:07,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:07,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:51:07,198 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:07,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2069658937, now seen corresponding path program 1 times [2024-06-27 21:51:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:07,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038132372] [2024-06-27 21:51:07,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:07,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:07,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038132372] [2024-06-27 21:51:07,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038132372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:07,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:07,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843077498] [2024-06-27 21:51:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:07,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:07,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-06-27 21:51:07,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 69 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2024-06-27 21:51:07,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:07,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-06-27 21:51:07,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:07,845 INFO L124 PetriNetUnfolderBase]: 3565/6631 cut-off events. [2024-06-27 21:51:07,846 INFO L125 PetriNetUnfolderBase]: For 16589/16640 co-relation queries the response was YES. [2024-06-27 21:51:07,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20412 conditions, 6631 events. 3565/6631 cut-off events. For 16589/16640 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53075 event pairs, 1524 based on Foata normal form. 113/6609 useless extension candidates. Maximal degree in co-relation 20390. Up to 3015 conditions per place. [2024-06-27 21:51:07,885 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 68 selfloop transitions, 9 changer transitions 38/136 dead transitions. [2024-06-27 21:51:07,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 136 transitions, 1024 flow [2024-06-27 21:51:07,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:51:07,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:51:07,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 354 transitions. [2024-06-27 21:51:07,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-27 21:51:07,887 INFO L175 Difference]: Start difference. First operand has 92 places, 69 transitions, 441 flow. Second operand 10 states and 354 transitions. [2024-06-27 21:51:07,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 136 transitions, 1024 flow [2024-06-27 21:51:07,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 962 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 21:51:07,935 INFO L231 Difference]: Finished difference. Result has 97 places, 72 transitions, 508 flow [2024-06-27 21:51:07,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=508, PETRI_PLACES=97, PETRI_TRANSITIONS=72} [2024-06-27 21:51:07,935 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 37 predicate places. [2024-06-27 21:51:07,935 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 72 transitions, 508 flow [2024-06-27 21:51:07,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 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) [2024-06-27 21:51:07,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:07,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:07,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:51:07,936 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:07,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash 592880318, now seen corresponding path program 1 times [2024-06-27 21:51:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:07,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798270623] [2024-06-27 21:51:07,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:07,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:08,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798270623] [2024-06-27 21:51:08,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798270623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:08,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:08,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:08,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167604279] [2024-06-27 21:51:08,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:08,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:08,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:08,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2024-06-27 21:51:08,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 72 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2024-06-27 21:51:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2024-06-27 21:51:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:08,631 INFO L124 PetriNetUnfolderBase]: 3622/6848 cut-off events. [2024-06-27 21:51:08,631 INFO L125 PetriNetUnfolderBase]: For 18875/18922 co-relation queries the response was YES. [2024-06-27 21:51:08,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21262 conditions, 6848 events. 3622/6848 cut-off events. For 18875/18922 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 56702 event pairs, 1269 based on Foata normal form. 91/6763 useless extension candidates. Maximal degree in co-relation 21237. Up to 2749 conditions per place. [2024-06-27 21:51:08,663 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 61 selfloop transitions, 12 changer transitions 26/120 dead transitions. [2024-06-27 21:51:08,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 120 transitions, 924 flow [2024-06-27 21:51:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:51:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:51:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-06-27 21:51:08,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6689814814814815 [2024-06-27 21:51:08,665 INFO L175 Difference]: Start difference. First operand has 97 places, 72 transitions, 508 flow. Second operand 8 states and 289 transitions. [2024-06-27 21:51:08,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 120 transitions, 924 flow [2024-06-27 21:51:08,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 120 transitions, 883 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 21:51:08,705 INFO L231 Difference]: Finished difference. Result has 98 places, 71 transitions, 516 flow [2024-06-27 21:51:08,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=516, PETRI_PLACES=98, PETRI_TRANSITIONS=71} [2024-06-27 21:51:08,705 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 38 predicate places. [2024-06-27 21:51:08,705 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 71 transitions, 516 flow [2024-06-27 21:51:08,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 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) [2024-06-27 21:51:08,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:08,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:08,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 21:51:08,706 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:08,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1930195296, now seen corresponding path program 1 times [2024-06-27 21:51:08,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:08,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498050629] [2024-06-27 21:51:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:08,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:08,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498050629] [2024-06-27 21:51:08,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498050629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:08,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:08,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137581775] [2024-06-27 21:51:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:08,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:08,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2024-06-27 21:51:08,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 71 transitions, 516 flow. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2024-06-27 21:51:08,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:08,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2024-06-27 21:51:08,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:09,289 INFO L124 PetriNetUnfolderBase]: 3808/7369 cut-off events. [2024-06-27 21:51:09,289 INFO L125 PetriNetUnfolderBase]: For 27947/28279 co-relation queries the response was YES. [2024-06-27 21:51:09,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22512 conditions, 7369 events. 3808/7369 cut-off events. For 27947/28279 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 63150 event pairs, 1453 based on Foata normal form. 197/7270 useless extension candidates. Maximal degree in co-relation 22485. Up to 2230 conditions per place. [2024-06-27 21:51:09,323 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 36 selfloop transitions, 7 changer transitions 31/102 dead transitions. [2024-06-27 21:51:09,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 814 flow [2024-06-27 21:51:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-06-27 21:51:09,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-27 21:51:09,326 INFO L175 Difference]: Start difference. First operand has 98 places, 71 transitions, 516 flow. Second operand 6 states and 225 transitions. [2024-06-27 21:51:09,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 814 flow [2024-06-27 21:51:09,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 102 transitions, 748 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 21:51:09,366 INFO L231 Difference]: Finished difference. Result has 95 places, 57 transitions, 356 flow [2024-06-27 21:51:09,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=95, PETRI_TRANSITIONS=57} [2024-06-27 21:51:09,367 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 35 predicate places. [2024-06-27 21:51:09,367 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 57 transitions, 356 flow [2024-06-27 21:51:09,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 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) [2024-06-27 21:51:09,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:09,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:09,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 21:51:09,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:09,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2066947346, now seen corresponding path program 2 times [2024-06-27 21:51:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:09,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355365417] [2024-06-27 21:51:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:09,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355365417] [2024-06-27 21:51:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355365417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:09,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:09,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:51:09,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030461773] [2024-06-27 21:51:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:09,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:51:09,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:51:09,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:51:09,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2024-06-27 21:51:09,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 57 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-06-27 21:51:09,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:09,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2024-06-27 21:51:09,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:10,149 INFO L124 PetriNetUnfolderBase]: 6647/11207 cut-off events. [2024-06-27 21:51:10,149 INFO L125 PetriNetUnfolderBase]: For 9648/10404 co-relation queries the response was YES. [2024-06-27 21:51:10,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24955 conditions, 11207 events. 6647/11207 cut-off events. For 9648/10404 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 89004 event pairs, 2031 based on Foata normal form. 457/11203 useless extension candidates. Maximal degree in co-relation 24930. Up to 5257 conditions per place. [2024-06-27 21:51:10,195 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 37 selfloop transitions, 6 changer transitions 0/77 dead transitions. [2024-06-27 21:51:10,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 77 transitions, 490 flow [2024-06-27 21:51:10,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:51:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:51:10,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-06-27 21:51:10,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7453703703703703 [2024-06-27 21:51:10,197 INFO L175 Difference]: Start difference. First operand has 95 places, 57 transitions, 356 flow. Second operand 4 states and 161 transitions. [2024-06-27 21:51:10,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 77 transitions, 490 flow [2024-06-27 21:51:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 77 transitions, 425 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-27 21:51:10,223 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 341 flow [2024-06-27 21:51:10,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=341, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2024-06-27 21:51:10,223 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 28 predicate places. [2024-06-27 21:51:10,223 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 341 flow [2024-06-27 21:51:10,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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) [2024-06-27 21:51:10,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:10,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:10,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 21:51:10,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:10,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash 503045421, now seen corresponding path program 1 times [2024-06-27 21:51:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:10,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346186697] [2024-06-27 21:51:10,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:10,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:10,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346186697] [2024-06-27 21:51:10,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346186697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:10,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:10,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:10,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127490865] [2024-06-27 21:51:10,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:10,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:10,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:10,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:10,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2024-06-27 21:51:10,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-06-27 21:51:10,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:10,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2024-06-27 21:51:10,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:10,992 INFO L124 PetriNetUnfolderBase]: 6579/10977 cut-off events. [2024-06-27 21:51:10,992 INFO L125 PetriNetUnfolderBase]: For 7405/10081 co-relation queries the response was YES. [2024-06-27 21:51:11,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28202 conditions, 10977 events. 6579/10977 cut-off events. For 7405/10081 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 85218 event pairs, 1119 based on Foata normal form. 478/11046 useless extension candidates. Maximal degree in co-relation 28182. Up to 5040 conditions per place. [2024-06-27 21:51:11,047 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 46 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-06-27 21:51:11,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 534 flow [2024-06-27 21:51:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 203 transitions. [2024-06-27 21:51:11,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7518518518518519 [2024-06-27 21:51:11,048 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 341 flow. Second operand 5 states and 203 transitions. [2024-06-27 21:51:11,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 534 flow [2024-06-27 21:51:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 529 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 21:51:11,058 INFO L231 Difference]: Finished difference. Result has 93 places, 67 transitions, 404 flow [2024-06-27 21:51:11,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2024-06-27 21:51:11,058 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 33 predicate places. [2024-06-27 21:51:11,058 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 404 flow [2024-06-27 21:51:11,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-06-27 21:51:11,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:11,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:11,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 21:51:11,059 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:11,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:11,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1748791992, now seen corresponding path program 1 times [2024-06-27 21:51:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:11,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166487481] [2024-06-27 21:51:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:11,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:11,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:11,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166487481] [2024-06-27 21:51:11,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166487481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:11,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890143512] [2024-06-27 21:51:11,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:11,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:11,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:11,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2024-06-27 21:51:11,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-06-27 21:51:11,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:11,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2024-06-27 21:51:11,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:11,774 INFO L124 PetriNetUnfolderBase]: 5787/9353 cut-off events. [2024-06-27 21:51:11,774 INFO L125 PetriNetUnfolderBase]: For 12038/16765 co-relation queries the response was YES. [2024-06-27 21:51:11,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28327 conditions, 9353 events. 5787/9353 cut-off events. For 12038/16765 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 67176 event pairs, 357 based on Foata normal form. 464/9488 useless extension candidates. Maximal degree in co-relation 28305. Up to 4592 conditions per place. [2024-06-27 21:51:11,818 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 55 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2024-06-27 21:51:11,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 659 flow [2024-06-27 21:51:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 245 transitions. [2024-06-27 21:51:11,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7561728395061729 [2024-06-27 21:51:11,819 INFO L175 Difference]: Start difference. First operand has 93 places, 67 transitions, 404 flow. Second operand 6 states and 245 transitions. [2024-06-27 21:51:11,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 659 flow [2024-06-27 21:51:11,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 103 transitions, 641 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:11,825 INFO L231 Difference]: Finished difference. Result has 98 places, 72 transitions, 472 flow [2024-06-27 21:51:11,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=98, PETRI_TRANSITIONS=72} [2024-06-27 21:51:11,825 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 38 predicate places. [2024-06-27 21:51:11,825 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 72 transitions, 472 flow [2024-06-27 21:51:11,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 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) [2024-06-27 21:51:11,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:11,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:11,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 21:51:11,826 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:11,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:11,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2038877870, now seen corresponding path program 1 times [2024-06-27 21:51:11,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:11,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742123130] [2024-06-27 21:51:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:11,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:11,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:11,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742123130] [2024-06-27 21:51:11,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742123130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:11,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:11,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:11,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390773719] [2024-06-27 21:51:11,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:11,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:11,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:11,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:11,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:11,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2024-06-27 21:51:11,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 72 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2024-06-27 21:51:11,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:11,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2024-06-27 21:51:11,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:12,545 INFO L124 PetriNetUnfolderBase]: 4736/9032 cut-off events. [2024-06-27 21:51:12,545 INFO L125 PetriNetUnfolderBase]: For 20055/21502 co-relation queries the response was YES. [2024-06-27 21:51:12,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28882 conditions, 9032 events. 4736/9032 cut-off events. For 20055/21502 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 79484 event pairs, 1540 based on Foata normal form. 168/8308 useless extension candidates. Maximal degree in co-relation 28858. Up to 2898 conditions per place. [2024-06-27 21:51:12,592 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 47 selfloop transitions, 5 changer transitions 12/107 dead transitions. [2024-06-27 21:51:12,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 107 transitions, 726 flow [2024-06-27 21:51:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:51:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:51:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-06-27 21:51:12,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-06-27 21:51:12,593 INFO L175 Difference]: Start difference. First operand has 98 places, 72 transitions, 472 flow. Second operand 7 states and 258 transitions. [2024-06-27 21:51:12,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 107 transitions, 726 flow [2024-06-27 21:51:12,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 107 transitions, 690 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 21:51:12,613 INFO L231 Difference]: Finished difference. Result has 103 places, 72 transitions, 453 flow [2024-06-27 21:51:12,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=103, PETRI_TRANSITIONS=72} [2024-06-27 21:51:12,613 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 43 predicate places. [2024-06-27 21:51:12,613 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 72 transitions, 453 flow [2024-06-27 21:51:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2024-06-27 21:51:12,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:12,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:12,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 21:51:12,614 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:12,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 387720416, now seen corresponding path program 2 times [2024-06-27 21:51:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:12,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009660949] [2024-06-27 21:51:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:12,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:12,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009660949] [2024-06-27 21:51:12,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009660949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:12,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:12,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:12,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809358057] [2024-06-27 21:51:12,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:12,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:51:12,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:12,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:51:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:51:12,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2024-06-27 21:51:12,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 72 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 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) [2024-06-27 21:51:12,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:12,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2024-06-27 21:51:12,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:13,251 INFO L124 PetriNetUnfolderBase]: 5833/8982 cut-off events. [2024-06-27 21:51:13,251 INFO L125 PetriNetUnfolderBase]: For 16616/20886 co-relation queries the response was YES. [2024-06-27 21:51:13,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28700 conditions, 8982 events. 5833/8982 cut-off events. For 16616/20886 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 61364 event pairs, 192 based on Foata normal form. 399/9045 useless extension candidates. Maximal degree in co-relation 28674. Up to 3796 conditions per place. [2024-06-27 21:51:13,286 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 53 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-27 21:51:13,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 675 flow [2024-06-27 21:51:13,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:51:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:51:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 276 transitions. [2024-06-27 21:51:13,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2024-06-27 21:51:13,287 INFO L175 Difference]: Start difference. First operand has 103 places, 72 transitions, 453 flow. Second operand 7 states and 276 transitions. [2024-06-27 21:51:13,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 675 flow [2024-06-27 21:51:13,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 642 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 21:51:13,302 INFO L231 Difference]: Finished difference. Result has 102 places, 73 transitions, 483 flow [2024-06-27 21:51:13,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=483, PETRI_PLACES=102, PETRI_TRANSITIONS=73} [2024-06-27 21:51:13,302 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 42 predicate places. [2024-06-27 21:51:13,302 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 73 transitions, 483 flow [2024-06-27 21:51:13,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 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) [2024-06-27 21:51:13,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:13,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:13,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 21:51:13,303 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:51:13,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1963003435, now seen corresponding path program 1 times [2024-06-27 21:51:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109737797] [2024-06-27 21:51:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109737797] [2024-06-27 21:51:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109737797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:13,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:13,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:13,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818238617] [2024-06-27 21:51:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:13,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:13,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-27 21:51:13,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 73 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2024-06-27 21:51:13,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:13,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-27 21:51:13,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:13,990 INFO L124 PetriNetUnfolderBase]: 4585/8556 cut-off events. [2024-06-27 21:51:13,990 INFO L125 PetriNetUnfolderBase]: For 21793/22858 co-relation queries the response was YES. [2024-06-27 21:51:14,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27557 conditions, 8556 events. 4585/8556 cut-off events. For 21793/22858 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 75993 event pairs, 1654 based on Foata normal form. 82/7594 useless extension candidates. Maximal degree in co-relation 27533. Up to 3851 conditions per place. [2024-06-27 21:51:14,032 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 0 selfloop transitions, 0 changer transitions 101/101 dead transitions. [2024-06-27 21:51:14,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 726 flow [2024-06-27 21:51:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:51:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:51:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-27 21:51:14,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529100529100529 [2024-06-27 21:51:14,045 INFO L175 Difference]: Start difference. First operand has 102 places, 73 transitions, 483 flow. Second operand 7 states and 209 transitions. [2024-06-27 21:51:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 726 flow [2024-06-27 21:51:14,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 655 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 21:51:14,156 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2024-06-27 21:51:14,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2024-06-27 21:51:14,156 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 40 predicate places. [2024-06-27 21:51:14,156 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2024-06-27 21:51:14,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2024-06-27 21:51:14,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 9 remaining) [2024-06-27 21:51:14,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 9 remaining) [2024-06-27 21:51:14,161 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 9 remaining) [2024-06-27 21:51:14,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 9 remaining) [2024-06-27 21:51:14,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-06-27 21:51:14,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-06-27 21:51:14,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2024-06-27 21:51:14,164 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2024-06-27 21:51:14,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2024-06-27 21:51:14,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 21:51:14,165 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:14,168 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:51:14,168 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:51:14,171 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-27 21:51:14,171 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-27 21:51:14,172 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:51:14 BasicIcfg [2024-06-27 21:51:14,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:51:14,173 INFO L158 Benchmark]: Toolchain (without parser) took 17216.80ms. Allocated memory was 165.7MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 88.8MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-06-27 21:51:14,173 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:14,173 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:14,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.49ms. Allocated memory is still 165.7MB. Free memory was 88.6MB in the beginning and 132.0MB in the end (delta: -43.4MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. [2024-06-27 21:51:14,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.53ms. Allocated memory is still 165.7MB. Free memory was 132.0MB in the beginning and 130.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:14,174 INFO L158 Benchmark]: Boogie Preprocessor took 60.28ms. Allocated memory is still 165.7MB. Free memory was 130.2MB in the beginning and 128.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:14,174 INFO L158 Benchmark]: RCFGBuilder took 355.66ms. Allocated memory is still 165.7MB. Free memory was 127.7MB in the beginning and 105.6MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:14,174 INFO L158 Benchmark]: TraceAbstraction took 16258.10ms. Allocated memory was 165.7MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 105.0MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-06-27 21:51:14,177 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.49ms. Allocated memory is still 165.7MB. Free memory was 88.6MB in the beginning and 132.0MB in the end (delta: -43.4MB). Peak memory consumption was 32.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.53ms. Allocated memory is still 165.7MB. Free memory was 132.0MB in the beginning and 130.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.28ms. Allocated memory is still 165.7MB. Free memory was 130.2MB in the beginning and 128.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 355.66ms. Allocated memory is still 165.7MB. Free memory was 127.7MB in the beginning and 105.6MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 16258.10ms. Allocated memory was 165.7MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 105.0MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 791]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 84 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.2s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 13.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1707 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1469 mSDsluCounter, 736 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 542 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3406 IncrementalHoareTripleChecker+Invalid, 3509 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 194 mSDtfsCounter, 3406 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=752occurred in iteration=12, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 533 NumberOfCodeBlocks, 533 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 2483 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 23 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:51:14,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE