./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:26:26,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:26:26,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:26:26,690 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:26:26,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:26:26,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:26:26,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:26:26,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:26:26,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:26:26,720 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:26:26,720 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:26:26,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:26:26,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:26:26,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:26:26,734 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:26:26,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:26:26,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:26:26,735 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:26:26,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:26:26,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:26:26,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:26:26,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:26:26,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:26:26,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:26:26,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:26:26,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:26:26,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:26:26,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:26:26,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:26:26,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:26:26,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:26:26,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:26:26,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:26:26,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:26:26,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:26:26,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:26:26,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:26:26,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:26:26,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:26:26,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:26:26,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:26:26,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:26:26,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:26:26,741 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:26:27,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:26:27,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:26:27,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:26:27,091 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:26:27,091 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:26:27,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:26:28,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:26:28,314 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:26:28,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:26:28,339 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a426a228/3c0ae6df1b2f46b495fc748c36ce1a4b/FLAG891db9df9 [2024-06-14 13:26:28,349 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a426a228/3c0ae6df1b2f46b495fc748c36ce1a4b [2024-06-14 13:26:28,351 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:26:28,351 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:26:28,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 13:26:28,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:26:28,466 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:26:28,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:26:28,467 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:26:28,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:26:28,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:26:28" (1/2) ... [2024-06-14 13:26:28,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec94e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:28, skipping insertion in model container [2024-06-14 13:26:28,472 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:26:28" (1/2) ... [2024-06-14 13:26:28,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68eaed4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:26:28, skipping insertion in model container [2024-06-14 13:26:28,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:26:28" (2/2) ... [2024-06-14 13:26:28,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec94e8e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28, skipping insertion in model container [2024-06-14 13:26:28,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:26:28" (2/2) ... [2024-06-14 13:26:28,475 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:26:28,522 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:26:28,524 INFO L97 edCorrectnessWitness]: Location invariant before [L810-L810] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-14 13:26:28,524 INFO L97 edCorrectnessWitness]: Location invariant before [L811-L811] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-14 13:26:28,524 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:26:28,524 INFO L106 edCorrectnessWitness]: ghost_update [L808-L808] multithreaded = 1; [2024-06-14 13:26:28,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:26:28,869 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:26:28,882 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:26:28,955 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:26:28,986 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:26:28,987 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28 WrapperNode [2024-06-14 13:26:28,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:26:28,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:26:28,994 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:26:28,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:26:29,000 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 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,014 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 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,032 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-14 13:26:29,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:26:29,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:26:29,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:26:29,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:26:29,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,062 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]. [2024-06-14 13:26:29,064 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,072 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:26:29,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:26:29,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:26:29,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:26:29,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (1/1) ... [2024-06-14 13:26:29,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:26:29,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:26:29,124 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) [2024-06-14 13:26:29,140 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 [2024-06-14 13:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:26:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:26:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:26:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:26:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:26:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:26:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:26:29,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:26:29,161 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:26:29,288 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:26:29,290 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:26:29,606 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:26:29,606 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:26:29,717 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:26:29,717 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:26:29,717 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:26:29 BoogieIcfgContainer [2024-06-14 13:26:29,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:26:29,719 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:26:29,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:26:29,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:26:29,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:26:28" (1/4) ... [2024-06-14 13:26:29,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27189708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:26:29, skipping insertion in model container [2024-06-14 13:26:29,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:26:28" (2/4) ... [2024-06-14 13:26:29,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27189708 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:26:29, skipping insertion in model container [2024-06-14 13:26:29,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:26:28" (3/4) ... [2024-06-14 13:26:29,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27189708 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:26:29, skipping insertion in model container [2024-06-14 13:26:29,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:26:29" (4/4) ... [2024-06-14 13:26:29,723 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 13:26:29,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:26:29,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:26:29,735 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:26:29,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:26:29,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 13:26:29,816 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-14 13:26:29,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:26:29,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:26:29,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 13:26:29,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-14 13:26:29,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:26:29,837 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;@5f7bb49f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:26:29,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:26:29,841 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:26:29,841 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:26:29,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:26:29,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:29,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:26:29,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1470245525, now seen corresponding path program 1 times [2024-06-14 13:26:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:29,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255949887] [2024-06-14 13:26:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:29,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:30,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:30,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255949887] [2024-06-14 13:26:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255949887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:30,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:26:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990711126] [2024-06-14 13:26:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:30,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:26:30,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:30,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:26:30,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:26:30,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-14 13:26:30,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-06-14 13:26:30,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:30,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-14 13:26:30,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:30,877 INFO L124 PetriNetUnfolderBase]: 131/247 cut-off events. [2024-06-14 13:26:30,881 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 13:26:30,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509 conditions, 247 events. 131/247 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 848 event pairs, 79 based on Foata normal form. 3/244 useless extension candidates. Maximal degree in co-relation 495. Up to 231 conditions per place. [2024-06-14 13:26:30,901 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 24 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 13:26:30,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 123 flow [2024-06-14 13:26:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:26:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:26:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-14 13:26:30,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-14 13:26:30,913 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 53 transitions. [2024-06-14 13:26:30,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 123 flow [2024-06-14 13:26:30,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:26:30,916 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-14 13:26:30,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-14 13:26:30,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-14 13:26:30,919 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-14 13:26:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-06-14 13:26:30,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:30,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:30,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:26:30,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash -138254860, now seen corresponding path program 1 times [2024-06-14 13:26:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484278480] [2024-06-14 13:26:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:31,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484278480] [2024-06-14 13:26:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484278480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:31,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:31,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:26:31,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007209280] [2024-06-14 13:26:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:26:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:26:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:26:31,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-14 13:26:31,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-14 13:26:31,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:31,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-14 13:26:31,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:31,477 INFO L124 PetriNetUnfolderBase]: 134/252 cut-off events. [2024-06-14 13:26:31,477 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-14 13:26:31,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 252 events. 134/252 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 871 event pairs, 53 based on Foata normal form. 4/255 useless extension candidates. Maximal degree in co-relation 580. Up to 227 conditions per place. [2024-06-14 13:26:31,482 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-14 13:26:31,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 176 flow [2024-06-14 13:26:31,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:26:31,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:26:31,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 13:26:31,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-14 13:26:31,483 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 67 transitions. [2024-06-14 13:26:31,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 176 flow [2024-06-14 13:26:31,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:26:31,485 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 106 flow [2024-06-14 13:26:31,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-06-14 13:26:31,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-14 13:26:31,486 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 106 flow [2024-06-14 13:26:31,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-06-14 13:26:31,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:31,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:26:31,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:31,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:31,486 INFO L85 PathProgramCache]: Analyzing trace with hash 9067822, now seen corresponding path program 1 times [2024-06-14 13:26:31,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021962544] [2024-06-14 13:26:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:31,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:32,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:32,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:32,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021962544] [2024-06-14 13:26:32,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021962544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:32,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:32,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:26:32,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623376936] [2024-06-14 13:26:32,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:32,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:26:32,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:32,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:26:32,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:26:32,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 13:26:32,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-06-14 13:26:32,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:32,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 13:26:32,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:32,149 INFO L124 PetriNetUnfolderBase]: 154/285 cut-off events. [2024-06-14 13:26:32,150 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2024-06-14 13:26:32,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 285 events. 154/285 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 952 event pairs, 58 based on Foata normal form. 2/286 useless extension candidates. Maximal degree in co-relation 761. Up to 258 conditions per place. [2024-06-14 13:26:32,152 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2024-06-14 13:26:32,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 245 flow [2024-06-14 13:26:32,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:26:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:26:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-06-14 13:26:32,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:26:32,154 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 106 flow. Second operand 5 states and 75 transitions. [2024-06-14 13:26:32,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 245 flow [2024-06-14 13:26:32,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 238 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-14 13:26:32,156 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 155 flow [2024-06-14 13:26:32,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-06-14 13:26:32,157 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2024-06-14 13:26:32,157 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 155 flow [2024-06-14 13:26:32,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-06-14 13:26:32,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:32,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:32,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:26:32,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:32,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:32,158 INFO L85 PathProgramCache]: Analyzing trace with hash 946038819, now seen corresponding path program 1 times [2024-06-14 13:26:32,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:32,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523730364] [2024-06-14 13:26:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:32,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:32,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523730364] [2024-06-14 13:26:32,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523730364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:32,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:32,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:26:32,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141867914] [2024-06-14 13:26:32,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:32,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:26:32,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:32,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:26:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:26:32,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 13:26:32,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-06-14 13:26:32,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:32,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 13:26:32,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:32,981 INFO L124 PetriNetUnfolderBase]: 151/280 cut-off events. [2024-06-14 13:26:32,981 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-06-14 13:26:32,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 855 conditions, 280 events. 151/280 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 930 event pairs, 40 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 833. Up to 244 conditions per place. [2024-06-14 13:26:32,984 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2024-06-14 13:26:32,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 301 flow [2024-06-14 13:26:32,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:32,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-14 13:26:32,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-14 13:26:32,990 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 155 flow. Second operand 6 states and 88 transitions. [2024-06-14 13:26:32,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 301 flow [2024-06-14 13:26:32,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-14 13:26:32,994 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 190 flow [2024-06-14 13:26:32,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-06-14 13:26:32,995 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-14 13:26:32,995 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 190 flow [2024-06-14 13:26:32,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2024-06-14 13:26:32,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:32,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:26:32,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:32,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash -737566435, now seen corresponding path program 1 times [2024-06-14 13:26:32,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:32,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989184184] [2024-06-14 13:26:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:32,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:33,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:33,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:33,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989184184] [2024-06-14 13:26:33,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989184184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:33,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:33,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:26:33,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495594136] [2024-06-14 13:26:33,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:33,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:26:33,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:33,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:26:33,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:26:33,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-14 13:26:33,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2024-06-14 13:26:33,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:33,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-14 13:26:33,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:33,917 INFO L124 PetriNetUnfolderBase]: 147/272 cut-off events. [2024-06-14 13:26:33,917 INFO L125 PetriNetUnfolderBase]: For 423/423 co-relation queries the response was YES. [2024-06-14 13:26:33,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 272 events. 147/272 cut-off events. For 423/423 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 886 event pairs, 21 based on Foata normal form. 4/275 useless extension candidates. Maximal degree in co-relation 883. Up to 218 conditions per place. [2024-06-14 13:26:33,919 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-14 13:26:33,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 326 flow [2024-06-14 13:26:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:33,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 13:26:33,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 13:26:33,920 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 190 flow. Second operand 7 states and 96 transitions. [2024-06-14 13:26:33,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 326 flow [2024-06-14 13:26:33,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 309 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 13:26:33,923 INFO L231 Difference]: Finished difference. Result has 48 places, 35 transitions, 187 flow [2024-06-14 13:26:33,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=187, PETRI_PLACES=48, PETRI_TRANSITIONS=35} [2024-06-14 13:26:33,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-14 13:26:33,924 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 35 transitions, 187 flow [2024-06-14 13:26:33,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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) [2024-06-14 13:26:33,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:33,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:33,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:26:33,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:33,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:33,936 INFO L85 PathProgramCache]: Analyzing trace with hash 2137059725, now seen corresponding path program 1 times [2024-06-14 13:26:33,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:33,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620582317] [2024-06-14 13:26:33,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:33,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:34,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620582317] [2024-06-14 13:26:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620582317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:34,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284236399] [2024-06-14 13:26:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:34,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:34,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:34,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 35 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:34,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:34,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:34,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:34,751 INFO L124 PetriNetUnfolderBase]: 166/303 cut-off events. [2024-06-14 13:26:34,751 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2024-06-14 13:26:34,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 303 events. 166/303 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1026 event pairs, 39 based on Foata normal form. 3/305 useless extension candidates. Maximal degree in co-relation 1016. Up to 235 conditions per place. [2024-06-14 13:26:34,753 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 43 selfloop transitions, 14 changer transitions 0/59 dead transitions. [2024-06-14 13:26:34,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 383 flow [2024-06-14 13:26:34,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:34,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 13:26:34,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-14 13:26:34,755 INFO L175 Difference]: Start difference. First operand has 48 places, 35 transitions, 187 flow. Second operand 7 states and 93 transitions. [2024-06-14 13:26:34,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 383 flow [2024-06-14 13:26:34,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 59 transitions, 356 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:26:34,759 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 217 flow [2024-06-14 13:26:34,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-06-14 13:26:34,761 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-14 13:26:34,761 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 217 flow [2024-06-14 13:26:34,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:34,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:34,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:34,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:26:34,762 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:34,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1111055291, now seen corresponding path program 2 times [2024-06-14 13:26:34,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:34,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676520451] [2024-06-14 13:26:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:35,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:35,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:35,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676520451] [2024-06-14 13:26:35,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676520451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:35,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:35,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588658304] [2024-06-14 13:26:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:35,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:35,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:35,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:35,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:35,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:35,670 INFO L124 PetriNetUnfolderBase]: 184/333 cut-off events. [2024-06-14 13:26:35,670 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2024-06-14 13:26:35,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 333 events. 184/333 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1161 event pairs, 40 based on Foata normal form. 3/335 useless extension candidates. Maximal degree in co-relation 1186. Up to 281 conditions per place. [2024-06-14 13:26:35,672 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 44 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-14 13:26:35,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 401 flow [2024-06-14 13:26:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 13:26:35,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-14 13:26:35,674 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 217 flow. Second operand 7 states and 88 transitions. [2024-06-14 13:26:35,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 401 flow [2024-06-14 13:26:35,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 382 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:35,677 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 261 flow [2024-06-14 13:26:35,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=261, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-14 13:26:35,678 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-14 13:26:35,678 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 261 flow [2024-06-14 13:26:35,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:35,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:35,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:35,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:26:35,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:35,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:35,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1264656335, now seen corresponding path program 1 times [2024-06-14 13:26:35,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:35,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947587518] [2024-06-14 13:26:35,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:35,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:36,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:36,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947587518] [2024-06-14 13:26:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947587518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:36,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578854105] [2024-06-14 13:26:36,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:36,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:36,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:36,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:36,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:36,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:36,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 261 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:36,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:36,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:36,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:36,623 INFO L124 PetriNetUnfolderBase]: 180/327 cut-off events. [2024-06-14 13:26:36,624 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2024-06-14 13:26:36,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 327 events. 180/327 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1147 event pairs, 33 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1226. Up to 274 conditions per place. [2024-06-14 13:26:36,626 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 41 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-06-14 13:26:36,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 409 flow [2024-06-14 13:26:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:26:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:26:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2024-06-14 13:26:36,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-14 13:26:36,628 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 261 flow. Second operand 5 states and 68 transitions. [2024-06-14 13:26:36,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 409 flow [2024-06-14 13:26:36,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 380 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:26:36,631 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 286 flow [2024-06-14 13:26:36,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 13:26:36,632 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-06-14 13:26:36,632 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 286 flow [2024-06-14 13:26:36,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:36,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:36,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:26:36,633 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:36,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1242550421, now seen corresponding path program 3 times [2024-06-14 13:26:36,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737484873] [2024-06-14 13:26:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:37,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737484873] [2024-06-14 13:26:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737484873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:37,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:37,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:37,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579795896] [2024-06-14 13:26:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:37,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:37,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:37,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:37,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 286 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:37,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:37,388 INFO L124 PetriNetUnfolderBase]: 174/318 cut-off events. [2024-06-14 13:26:37,388 INFO L125 PetriNetUnfolderBase]: For 1141/1141 co-relation queries the response was YES. [2024-06-14 13:26:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 318 events. 174/318 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1102 event pairs, 40 based on Foata normal form. 3/320 useless extension candidates. Maximal degree in co-relation 1233. Up to 266 conditions per place. [2024-06-14 13:26:37,390 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 46 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-14 13:26:37,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 446 flow [2024-06-14 13:26:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:37,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-14 13:26:37,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-14 13:26:37,392 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 286 flow. Second operand 6 states and 81 transitions. [2024-06-14 13:26:37,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 446 flow [2024-06-14 13:26:37,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 424 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:37,395 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 298 flow [2024-06-14 13:26:37,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-14 13:26:37,396 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-14 13:26:37,396 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 298 flow [2024-06-14 13:26:37,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2024-06-14 13:26:37,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:37,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:26:37,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:37,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:37,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1264647407, now seen corresponding path program 1 times [2024-06-14 13:26:37,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:37,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127297135] [2024-06-14 13:26:37,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:37,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:38,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:38,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127297135] [2024-06-14 13:26:38,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127297135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:38,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:38,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:26:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774411350] [2024-06-14 13:26:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:38,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:26:38,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:26:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:26:38,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:38,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:38,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:38,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:38,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:38,500 INFO L124 PetriNetUnfolderBase]: 171/313 cut-off events. [2024-06-14 13:26:38,500 INFO L125 PetriNetUnfolderBase]: For 1322/1322 co-relation queries the response was YES. [2024-06-14 13:26:38,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 313 events. 171/313 cut-off events. For 1322/1322 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1069 event pairs, 40 based on Foata normal form. 2/314 useless extension candidates. Maximal degree in co-relation 1245. Up to 289 conditions per place. [2024-06-14 13:26:38,503 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 43 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-14 13:26:38,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 414 flow [2024-06-14 13:26:38,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:26:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:26:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-14 13:26:38,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-14 13:26:38,504 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 298 flow. Second operand 5 states and 61 transitions. [2024-06-14 13:26:38,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 414 flow [2024-06-14 13:26:38,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 375 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 13:26:38,507 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 277 flow [2024-06-14 13:26:38,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-14 13:26:38,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-14 13:26:38,510 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 277 flow [2024-06-14 13:26:38,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:38,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:38,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:38,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:26:38,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:38,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1079636854, now seen corresponding path program 1 times [2024-06-14 13:26:38,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320416527] [2024-06-14 13:26:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:39,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:39,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320416527] [2024-06-14 13:26:39,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320416527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:39,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:39,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:26:39,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992448100] [2024-06-14 13:26:39,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:39,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:26:39,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:26:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:26:39,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:39,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 277 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:39,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:39,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:39,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:39,469 INFO L124 PetriNetUnfolderBase]: 190/344 cut-off events. [2024-06-14 13:26:39,470 INFO L125 PetriNetUnfolderBase]: For 1407/1407 co-relation queries the response was YES. [2024-06-14 13:26:39,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 344 events. 190/344 cut-off events. For 1407/1407 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1233 event pairs, 34 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 1304. Up to 218 conditions per place. [2024-06-14 13:26:39,472 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2024-06-14 13:26:39,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 547 flow [2024-06-14 13:26:39,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:26:39,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:26:39,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 13:26:39,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-14 13:26:39,473 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 277 flow. Second operand 9 states and 119 transitions. [2024-06-14 13:26:39,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 547 flow [2024-06-14 13:26:39,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 533 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:39,477 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 370 flow [2024-06-14 13:26:39,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-06-14 13:26:39,477 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-14 13:26:39,477 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 370 flow [2024-06-14 13:26:39,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:39,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:39,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:39,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:26:39,478 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:39,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:39,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1821513992, now seen corresponding path program 2 times [2024-06-14 13:26:39,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458088383] [2024-06-14 13:26:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:40,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:40,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458088383] [2024-06-14 13:26:40,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458088383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:40,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:40,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:26:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085812723] [2024-06-14 13:26:40,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:40,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:26:40,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:26:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:26:40,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:40,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 370 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:40,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:40,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:40,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:40,519 INFO L124 PetriNetUnfolderBase]: 199/359 cut-off events. [2024-06-14 13:26:40,519 INFO L125 PetriNetUnfolderBase]: For 1787/1787 co-relation queries the response was YES. [2024-06-14 13:26:40,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 359 events. 199/359 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1286 event pairs, 39 based on Foata normal form. 3/361 useless extension candidates. Maximal degree in co-relation 1553. Up to 296 conditions per place. [2024-06-14 13:26:40,521 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 16 changer transitions 0/72 dead transitions. [2024-06-14 13:26:40,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 593 flow [2024-06-14 13:26:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:26:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:26:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 13:26:40,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 13:26:40,523 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 370 flow. Second operand 8 states and 99 transitions. [2024-06-14 13:26:40,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 593 flow [2024-06-14 13:26:40,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 550 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 13:26:40,527 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 396 flow [2024-06-14 13:26:40,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-14 13:26:40,528 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-14 13:26:40,528 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 396 flow [2024-06-14 13:26:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:40,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:40,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:40,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:26:40,529 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:40,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:40,529 INFO L85 PathProgramCache]: Analyzing trace with hash -556789555, now seen corresponding path program 1 times [2024-06-14 13:26:40,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:40,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905533036] [2024-06-14 13:26:40,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:40,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:41,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:41,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905533036] [2024-06-14 13:26:41,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905533036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:41,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:41,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:26:41,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240386282] [2024-06-14 13:26:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:41,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:26:41,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:26:41,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:26:41,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:41,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 396 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:41,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:41,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:41,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:41,490 INFO L124 PetriNetUnfolderBase]: 195/353 cut-off events. [2024-06-14 13:26:41,491 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-06-14 13:26:41,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 353 events. 195/353 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1262 event pairs, 40 based on Foata normal form. 2/354 useless extension candidates. Maximal degree in co-relation 1559. Up to 279 conditions per place. [2024-06-14 13:26:41,494 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 53 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2024-06-14 13:26:41,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 606 flow [2024-06-14 13:26:41,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:41,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-06-14 13:26:41,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-14 13:26:41,496 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 396 flow. Second operand 6 states and 83 transitions. [2024-06-14 13:26:41,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 606 flow [2024-06-14 13:26:41,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 572 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 13:26:41,501 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 429 flow [2024-06-14 13:26:41,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=429, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-14 13:26:41,501 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-14 13:26:41,502 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 429 flow [2024-06-14 13:26:41,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:41,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:41,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:41,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:26:41,502 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:41,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash -556997100, now seen corresponding path program 3 times [2024-06-14 13:26:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:41,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796702703] [2024-06-14 13:26:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:41,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:42,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796702703] [2024-06-14 13:26:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796702703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:42,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:42,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:26:42,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474420652] [2024-06-14 13:26:42,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:42,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:26:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:26:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:26:42,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:42,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 429 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:42,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:42,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:42,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:42,516 INFO L124 PetriNetUnfolderBase]: 189/344 cut-off events. [2024-06-14 13:26:42,516 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-06-14 13:26:42,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 344 events. 189/344 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1230 event pairs, 41 based on Foata normal form. 3/346 useless extension candidates. Maximal degree in co-relation 1543. Up to 272 conditions per place. [2024-06-14 13:26:42,519 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-14 13:26:42,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 77 transitions, 641 flow [2024-06-14 13:26:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:42,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-14 13:26:42,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-14 13:26:42,520 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 429 flow. Second operand 7 states and 96 transitions. [2024-06-14 13:26:42,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 77 transitions, 641 flow [2024-06-14 13:26:42,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 593 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 13:26:42,525 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 426 flow [2024-06-14 13:26:42,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-14 13:26:42,525 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-14 13:26:42,526 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 426 flow [2024-06-14 13:26:42,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 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) [2024-06-14 13:26:42,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:42,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:26:42,526 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:42,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1840779308, now seen corresponding path program 1 times [2024-06-14 13:26:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031239028] [2024-06-14 13:26:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:43,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:43,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031239028] [2024-06-14 13:26:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031239028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:43,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:43,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625161891] [2024-06-14 13:26:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:43,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:43,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 426 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:43,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:43,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:43,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:43,574 INFO L124 PetriNetUnfolderBase]: 193/352 cut-off events. [2024-06-14 13:26:43,574 INFO L125 PetriNetUnfolderBase]: For 1699/1699 co-relation queries the response was YES. [2024-06-14 13:26:43,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 352 events. 193/352 cut-off events. For 1699/1699 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1269 event pairs, 27 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1557. Up to 248 conditions per place. [2024-06-14 13:26:43,576 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 62 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-14 13:26:43,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 767 flow [2024-06-14 13:26:43,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:26:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:26:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 13:26:43,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 13:26:43,578 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 426 flow. Second operand 9 states and 108 transitions. [2024-06-14 13:26:43,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 767 flow [2024-06-14 13:26:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 88 transitions, 709 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 13:26:43,582 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 558 flow [2024-06-14 13:26:43,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-06-14 13:26:43,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-14 13:26:43,583 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 558 flow [2024-06-14 13:26:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:43,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:43,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:43,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:26:43,584 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:43,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:43,584 INFO L85 PathProgramCache]: Analyzing trace with hash 447987146, now seen corresponding path program 2 times [2024-06-14 13:26:43,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:43,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476887557] [2024-06-14 13:26:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:43,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:44,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476887557] [2024-06-14 13:26:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476887557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:44,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:44,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:44,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6098433] [2024-06-14 13:26:44,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:44,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:44,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:44,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:44,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:44,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:44,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:44,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:44,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:44,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:44,752 INFO L124 PetriNetUnfolderBase]: 217/404 cut-off events. [2024-06-14 13:26:44,753 INFO L125 PetriNetUnfolderBase]: For 2986/2986 co-relation queries the response was YES. [2024-06-14 13:26:44,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 404 events. 217/404 cut-off events. For 2986/2986 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1566 event pairs, 35 based on Foata normal form. 14/417 useless extension candidates. Maximal degree in co-relation 1808. Up to 219 conditions per place. [2024-06-14 13:26:44,756 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 51 selfloop transitions, 34 changer transitions 12/99 dead transitions. [2024-06-14 13:26:44,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 99 transitions, 859 flow [2024-06-14 13:26:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:26:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:26:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 13:26:44,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-14 13:26:44,758 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 558 flow. Second operand 10 states and 132 transitions. [2024-06-14 13:26:44,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 99 transitions, 859 flow [2024-06-14 13:26:44,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 806 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:44,765 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 569 flow [2024-06-14 13:26:44,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=569, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2024-06-14 13:26:44,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-14 13:26:44,766 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 569 flow [2024-06-14 13:26:44,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:44,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:44,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:44,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:26:44,767 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:44,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1840776394, now seen corresponding path program 1 times [2024-06-14 13:26:44,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:44,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000860477] [2024-06-14 13:26:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:44,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000860477] [2024-06-14 13:26:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000860477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238478883] [2024-06-14 13:26:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:45,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:45,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:45,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:45,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 569 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:45,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:45,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:45,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:45,829 INFO L124 PetriNetUnfolderBase]: 204/375 cut-off events. [2024-06-14 13:26:45,830 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2024-06-14 13:26:45,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 375 events. 204/375 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1410 event pairs, 33 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1781. Up to 236 conditions per place. [2024-06-14 13:26:45,832 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 56 selfloop transitions, 35 changer transitions 0/93 dead transitions. [2024-06-14 13:26:45,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 93 transitions, 887 flow [2024-06-14 13:26:45,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:26:45,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:26:45,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 13:26:45,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42962962962962964 [2024-06-14 13:26:45,834 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 569 flow. Second operand 9 states and 116 transitions. [2024-06-14 13:26:45,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 93 transitions, 887 flow [2024-06-14 13:26:45,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 93 transitions, 801 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:26:45,840 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 623 flow [2024-06-14 13:26:45,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=623, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-06-14 13:26:45,841 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-14 13:26:45,841 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 623 flow [2024-06-14 13:26:45,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:45,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:45,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:45,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:26:45,842 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:45,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1837979884, now seen corresponding path program 2 times [2024-06-14 13:26:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764217385] [2024-06-14 13:26:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:46,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:46,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764217385] [2024-06-14 13:26:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764217385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:46,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682966617] [2024-06-14 13:26:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:46,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:46,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 623 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:46,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:46,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:46,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:47,019 INFO L124 PetriNetUnfolderBase]: 210/385 cut-off events. [2024-06-14 13:26:47,019 INFO L125 PetriNetUnfolderBase]: For 2907/2907 co-relation queries the response was YES. [2024-06-14 13:26:47,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 385 events. 210/385 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1453 event pairs, 33 based on Foata normal form. 2/386 useless extension candidates. Maximal degree in co-relation 1854. Up to 293 conditions per place. [2024-06-14 13:26:47,024 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 25 changer transitions 2/92 dead transitions. [2024-06-14 13:26:47,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 873 flow [2024-06-14 13:26:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:26:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:26:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 13:26:47,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 13:26:47,027 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 623 flow. Second operand 9 states and 110 transitions. [2024-06-14 13:26:47,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 873 flow [2024-06-14 13:26:47,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 827 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-14 13:26:47,036 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 658 flow [2024-06-14 13:26:47,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=658, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-06-14 13:26:47,036 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-14 13:26:47,037 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 658 flow [2024-06-14 13:26:47,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:47,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:47,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:47,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:26:47,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:47,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:47,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1722504140, now seen corresponding path program 1 times [2024-06-14 13:26:47,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:47,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393798325] [2024-06-14 13:26:47,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:47,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393798325] [2024-06-14 13:26:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393798325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:47,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:47,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:47,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364329406] [2024-06-14 13:26:47,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:47,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:47,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:47,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:47,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:48,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:48,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:48,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:48,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:48,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:48,188 INFO L124 PetriNetUnfolderBase]: 214/393 cut-off events. [2024-06-14 13:26:48,189 INFO L125 PetriNetUnfolderBase]: For 3266/3266 co-relation queries the response was YES. [2024-06-14 13:26:48,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 393 events. 214/393 cut-off events. For 3266/3266 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1507 event pairs, 37 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1927. Up to 348 conditions per place. [2024-06-14 13:26:48,191 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 71 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-06-14 13:26:48,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 870 flow [2024-06-14 13:26:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:26:48,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:26:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 13:26:48,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39166666666666666 [2024-06-14 13:26:48,193 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 658 flow. Second operand 8 states and 94 transitions. [2024-06-14 13:26:48,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 870 flow [2024-06-14 13:26:48,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 803 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 13:26:48,200 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 640 flow [2024-06-14 13:26:48,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=640, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-06-14 13:26:48,200 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-14 13:26:48,201 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 640 flow [2024-06-14 13:26:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:48,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:48,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:48,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:26:48,201 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:48,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1722688714, now seen corresponding path program 3 times [2024-06-14 13:26:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:48,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926242744] [2024-06-14 13:26:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926242744] [2024-06-14 13:26:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926242744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:48,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:48,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712186737] [2024-06-14 13:26:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:48,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:48,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:48,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:49,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:49,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 640 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:49,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:49,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:49,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:49,327 INFO L124 PetriNetUnfolderBase]: 220/403 cut-off events. [2024-06-14 13:26:49,327 INFO L125 PetriNetUnfolderBase]: For 3564/3564 co-relation queries the response was YES. [2024-06-14 13:26:49,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 403 events. 220/403 cut-off events. For 3564/3564 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1544 event pairs, 28 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 1962. Up to 320 conditions per place. [2024-06-14 13:26:49,330 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 68 selfloop transitions, 25 changer transitions 0/95 dead transitions. [2024-06-14 13:26:49,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 894 flow [2024-06-14 13:26:49,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:26:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:26:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 13:26:49,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-14 13:26:49,331 INFO L175 Difference]: Start difference. First operand has 89 places, 74 transitions, 640 flow. Second operand 9 states and 111 transitions. [2024-06-14 13:26:49,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 894 flow [2024-06-14 13:26:49,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 864 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 13:26:49,339 INFO L231 Difference]: Finished difference. Result has 93 places, 76 transitions, 693 flow [2024-06-14 13:26:49,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=693, PETRI_PLACES=93, PETRI_TRANSITIONS=76} [2024-06-14 13:26:49,339 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-14 13:26:49,340 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 76 transitions, 693 flow [2024-06-14 13:26:49,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:49,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:49,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:26:49,340 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:49,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1722688838, now seen corresponding path program 3 times [2024-06-14 13:26:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368942466] [2024-06-14 13:26:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:50,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:50,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368942466] [2024-06-14 13:26:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368942466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:50,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835978905] [2024-06-14 13:26:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:50,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:50,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:50,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 76 transitions, 693 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:50,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:50,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:50,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:50,544 INFO L124 PetriNetUnfolderBase]: 244/455 cut-off events. [2024-06-14 13:26:50,564 INFO L125 PetriNetUnfolderBase]: For 5752/5752 co-relation queries the response was YES. [2024-06-14 13:26:50,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 455 events. 244/455 cut-off events. For 5752/5752 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1847 event pairs, 41 based on Foata normal form. 14/468 useless extension candidates. Maximal degree in co-relation 2177. Up to 334 conditions per place. [2024-06-14 13:26:50,567 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 16 changer transitions 13/100 dead transitions. [2024-06-14 13:26:50,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 100 transitions, 970 flow [2024-06-14 13:26:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:26:50,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:26:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 13:26:50,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-14 13:26:50,569 INFO L175 Difference]: Start difference. First operand has 93 places, 76 transitions, 693 flow. Second operand 9 states and 113 transitions. [2024-06-14 13:26:50,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 100 transitions, 970 flow [2024-06-14 13:26:50,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 100 transitions, 907 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 13:26:50,577 INFO L231 Difference]: Finished difference. Result has 95 places, 72 transitions, 635 flow [2024-06-14 13:26:50,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=95, PETRI_TRANSITIONS=72} [2024-06-14 13:26:50,578 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-14 13:26:50,578 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 72 transitions, 635 flow [2024-06-14 13:26:50,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:50,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:50,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:50,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:26:50,578 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:50,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash -86855150, now seen corresponding path program 2 times [2024-06-14 13:26:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308227679] [2024-06-14 13:26:50,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:50,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308227679] [2024-06-14 13:26:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308227679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:51,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829317039] [2024-06-14 13:26:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:51,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:51,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 72 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:51,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:51,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:51,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:51,986 INFO L124 PetriNetUnfolderBase]: 215/404 cut-off events. [2024-06-14 13:26:51,986 INFO L125 PetriNetUnfolderBase]: For 4291/4291 co-relation queries the response was YES. [2024-06-14 13:26:51,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 404 events. 215/404 cut-off events. For 4291/4291 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1608 event pairs, 31 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 1971. Up to 344 conditions per place. [2024-06-14 13:26:51,989 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 70 selfloop transitions, 18 changer transitions 0/90 dead transitions. [2024-06-14 13:26:51,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 90 transitions, 873 flow [2024-06-14 13:26:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 13:26:51,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-14 13:26:51,991 INFO L175 Difference]: Start difference. First operand has 95 places, 72 transitions, 635 flow. Second operand 7 states and 86 transitions. [2024-06-14 13:26:51,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 90 transitions, 873 flow [2024-06-14 13:26:51,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 839 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 13:26:51,999 INFO L231 Difference]: Finished difference. Result has 97 places, 77 transitions, 700 flow [2024-06-14 13:26:51,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=700, PETRI_PLACES=97, PETRI_TRANSITIONS=77} [2024-06-14 13:26:51,999 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-14 13:26:52,000 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 77 transitions, 700 flow [2024-06-14 13:26:52,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:52,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:52,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:52,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:26:52,000 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:52,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:52,001 INFO L85 PathProgramCache]: Analyzing trace with hash -87039724, now seen corresponding path program 4 times [2024-06-14 13:26:52,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:52,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303641001] [2024-06-14 13:26:52,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:52,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303641001] [2024-06-14 13:26:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303641001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656535596] [2024-06-14 13:26:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:52,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:52,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:52,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 77 transitions, 700 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:52,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:52,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:52,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:53,172 INFO L124 PetriNetUnfolderBase]: 211/398 cut-off events. [2024-06-14 13:26:53,172 INFO L125 PetriNetUnfolderBase]: For 4375/4375 co-relation queries the response was YES. [2024-06-14 13:26:53,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 398 events. 211/398 cut-off events. For 4375/4375 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1587 event pairs, 29 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 2009. Up to 284 conditions per place. [2024-06-14 13:26:53,175 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 33 changer transitions 1/102 dead transitions. [2024-06-14 13:26:53,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 1024 flow [2024-06-14 13:26:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:26:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:26:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 13:26:53,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-14 13:26:53,176 INFO L175 Difference]: Start difference. First operand has 97 places, 77 transitions, 700 flow. Second operand 8 states and 109 transitions. [2024-06-14 13:26:53,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 1024 flow [2024-06-14 13:26:53,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 989 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 13:26:53,185 INFO L231 Difference]: Finished difference. Result has 103 places, 79 transitions, 776 flow [2024-06-14 13:26:53,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=776, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2024-06-14 13:26:53,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-14 13:26:53,186 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 776 flow [2024-06-14 13:26:53,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:53,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:53,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:53,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:26:53,187 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:53,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1104369654, now seen corresponding path program 4 times [2024-06-14 13:26:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:53,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254378217] [2024-06-14 13:26:53,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:53,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254378217] [2024-06-14 13:26:53,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254378217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:53,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593207554] [2024-06-14 13:26:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:53,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:53,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:53,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 776 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:53,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:53,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:53,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:54,190 INFO L124 PetriNetUnfolderBase]: 228/437 cut-off events. [2024-06-14 13:26:54,190 INFO L125 PetriNetUnfolderBase]: For 6343/6343 co-relation queries the response was YES. [2024-06-14 13:26:54,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 437 events. 228/437 cut-off events. For 6343/6343 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1808 event pairs, 21 based on Foata normal form. 14/450 useless extension candidates. Maximal degree in co-relation 2172. Up to 289 conditions per place. [2024-06-14 13:26:54,193 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 72 selfloop transitions, 18 changer transitions 14/106 dead transitions. [2024-06-14 13:26:54,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 106 transitions, 1082 flow [2024-06-14 13:26:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:26:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:26:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-14 13:26:54,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-14 13:26:54,195 INFO L175 Difference]: Start difference. First operand has 103 places, 79 transitions, 776 flow. Second operand 8 states and 110 transitions. [2024-06-14 13:26:54,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 106 transitions, 1082 flow [2024-06-14 13:26:54,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 106 transitions, 995 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:26:54,206 INFO L231 Difference]: Finished difference. Result has 105 places, 73 transitions, 677 flow [2024-06-14 13:26:54,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=105, PETRI_TRANSITIONS=73} [2024-06-14 13:26:54,207 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-14 13:26:54,207 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 73 transitions, 677 flow [2024-06-14 13:26:54,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:54,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:54,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:54,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:26:54,208 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:54,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:54,209 INFO L85 PathProgramCache]: Analyzing trace with hash 141046000, now seen corresponding path program 3 times [2024-06-14 13:26:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:54,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140656064] [2024-06-14 13:26:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:54,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:55,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:55,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140656064] [2024-06-14 13:26:55,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140656064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:55,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:55,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:55,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338095369] [2024-06-14 13:26:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:55,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:55,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:55,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:55,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 73 transitions, 677 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:55,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:55,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:55,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:55,363 INFO L124 PetriNetUnfolderBase]: 190/363 cut-off events. [2024-06-14 13:26:55,363 INFO L125 PetriNetUnfolderBase]: For 4348/4348 co-relation queries the response was YES. [2024-06-14 13:26:55,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 363 events. 190/363 cut-off events. For 4348/4348 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1404 event pairs, 28 based on Foata normal form. 2/364 useless extension candidates. Maximal degree in co-relation 1840. Up to 289 conditions per place. [2024-06-14 13:26:55,366 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 64 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-06-14 13:26:55,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 85 transitions, 877 flow [2024-06-14 13:26:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:55,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:55,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 13:26:55,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-14 13:26:55,367 INFO L175 Difference]: Start difference. First operand has 105 places, 73 transitions, 677 flow. Second operand 6 states and 77 transitions. [2024-06-14 13:26:55,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 85 transitions, 877 flow [2024-06-14 13:26:55,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 85 transitions, 788 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 13:26:55,375 INFO L231 Difference]: Finished difference. Result has 99 places, 74 transitions, 643 flow [2024-06-14 13:26:55,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=99, PETRI_TRANSITIONS=74} [2024-06-14 13:26:55,376 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-14 13:26:55,376 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 74 transitions, 643 flow [2024-06-14 13:26:55,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:55,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:55,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:26:55,377 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:55,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash 141039056, now seen corresponding path program 5 times [2024-06-14 13:26:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:55,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002199679] [2024-06-14 13:26:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:55,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:56,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:56,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:56,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002199679] [2024-06-14 13:26:56,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002199679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:56,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:56,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:56,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106084381] [2024-06-14 13:26:56,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:56,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:56,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:56,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:56,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:56,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 74 transitions, 643 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:56,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:56,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:56,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:56,565 INFO L124 PetriNetUnfolderBase]: 186/357 cut-off events. [2024-06-14 13:26:56,565 INFO L125 PetriNetUnfolderBase]: For 3878/3878 co-relation queries the response was YES. [2024-06-14 13:26:56,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 357 events. 186/357 cut-off events. For 3878/3878 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1376 event pairs, 30 based on Foata normal form. 2/358 useless extension candidates. Maximal degree in co-relation 1721. Up to 276 conditions per place. [2024-06-14 13:26:56,569 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 65 selfloop transitions, 26 changer transitions 0/93 dead transitions. [2024-06-14 13:26:56,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 877 flow [2024-06-14 13:26:56,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:26:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:26:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 13:26:56,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-14 13:26:56,581 INFO L175 Difference]: Start difference. First operand has 99 places, 74 transitions, 643 flow. Second operand 7 states and 97 transitions. [2024-06-14 13:26:56,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 877 flow [2024-06-14 13:26:56,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 834 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 13:26:56,590 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 663 flow [2024-06-14 13:26:56,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-06-14 13:26:56,591 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-14 13:26:56,591 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 663 flow [2024-06-14 13:26:56,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:56,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:56,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:56,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:26:56,592 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:56,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 149616880, now seen corresponding path program 4 times [2024-06-14 13:26:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:56,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375637772] [2024-06-14 13:26:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:57,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375637772] [2024-06-14 13:26:57,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375637772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:57,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:57,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:26:57,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34935472] [2024-06-14 13:26:57,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:57,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:26:57,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:26:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:26:57,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:57,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 663 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:57,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:57,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:57,518 INFO L124 PetriNetUnfolderBase]: 183/352 cut-off events. [2024-06-14 13:26:57,518 INFO L125 PetriNetUnfolderBase]: For 3509/3509 co-relation queries the response was YES. [2024-06-14 13:26:57,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 352 events. 183/352 cut-off events. For 3509/3509 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1367 event pairs, 27 based on Foata normal form. 2/353 useless extension candidates. Maximal degree in co-relation 1694. Up to 320 conditions per place. [2024-06-14 13:26:57,521 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 71 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2024-06-14 13:26:57,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 82 transitions, 841 flow [2024-06-14 13:26:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:26:57,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:26:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-14 13:26:57,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 13:26:57,522 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 663 flow. Second operand 6 states and 70 transitions. [2024-06-14 13:26:57,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 82 transitions, 841 flow [2024-06-14 13:26:57,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 82 transitions, 776 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 13:26:57,530 INFO L231 Difference]: Finished difference. Result has 100 places, 74 transitions, 620 flow [2024-06-14 13:26:57,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=100, PETRI_TRANSITIONS=74} [2024-06-14 13:26:57,530 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 71 predicate places. [2024-06-14 13:26:57,531 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 74 transitions, 620 flow [2024-06-14 13:26:57,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:26:57,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:57,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:57,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:26:57,531 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:57,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:57,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1231369968, now seen corresponding path program 1 times [2024-06-14 13:26:57,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:57,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968786176] [2024-06-14 13:26:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:58,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968786176] [2024-06-14 13:26:58,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968786176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:58,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:58,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:26:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405827144] [2024-06-14 13:26:58,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:58,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:26:58,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:58,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:26:58,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:26:58,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:58,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 74 transitions, 620 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:26:58,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:58,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:58,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:26:58,704 INFO L124 PetriNetUnfolderBase]: 210/413 cut-off events. [2024-06-14 13:26:58,705 INFO L125 PetriNetUnfolderBase]: For 5918/5918 co-relation queries the response was YES. [2024-06-14 13:26:58,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 413 events. 210/413 cut-off events. For 5918/5918 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1669 event pairs, 42 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 1934. Up to 139 conditions per place. [2024-06-14 13:26:58,707 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 36 changer transitions 13/105 dead transitions. [2024-06-14 13:26:58,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 105 transitions, 966 flow [2024-06-14 13:26:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:26:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:26:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 13:26:58,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-14 13:26:58,709 INFO L175 Difference]: Start difference. First operand has 100 places, 74 transitions, 620 flow. Second operand 10 states and 128 transitions. [2024-06-14 13:26:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 105 transitions, 966 flow [2024-06-14 13:26:58,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 105 transitions, 932 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 13:26:58,718 INFO L231 Difference]: Finished difference. Result has 105 places, 71 transitions, 636 flow [2024-06-14 13:26:58,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=636, PETRI_PLACES=105, PETRI_TRANSITIONS=71} [2024-06-14 13:26:58,723 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-06-14 13:26:58,723 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 71 transitions, 636 flow [2024-06-14 13:26:58,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:26:58,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:26:58,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:26:58,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:26:58,724 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:26:58,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:26:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1002700830, now seen corresponding path program 2 times [2024-06-14 13:26:58,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:26:58,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722490438] [2024-06-14 13:26:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:26:58,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:26:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:26:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:26:59,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:26:59,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722490438] [2024-06-14 13:26:59,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722490438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:26:59,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:26:59,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:26:59,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112940774] [2024-06-14 13:26:59,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:26:59,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:26:59,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:26:59,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:26:59,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:26:59,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:26:59,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 71 transitions, 636 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:26:59,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:26:59,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:26:59,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:00,128 INFO L124 PetriNetUnfolderBase]: 223/442 cut-off events. [2024-06-14 13:27:00,128 INFO L125 PetriNetUnfolderBase]: For 8760/8760 co-relation queries the response was YES. [2024-06-14 13:27:00,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 442 events. 223/442 cut-off events. For 8760/8760 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1881 event pairs, 53 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 2292. Up to 229 conditions per place. [2024-06-14 13:27:00,131 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 65 selfloop transitions, 26 changer transitions 8/101 dead transitions. [2024-06-14 13:27:00,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 101 transitions, 988 flow [2024-06-14 13:27:00,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:27:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:27:00,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 13:27:00,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 13:27:00,146 INFO L175 Difference]: Start difference. First operand has 105 places, 71 transitions, 636 flow. Second operand 11 states and 133 transitions. [2024-06-14 13:27:00,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 101 transitions, 988 flow [2024-06-14 13:27:00,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 101 transitions, 922 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 13:27:00,159 INFO L231 Difference]: Finished difference. Result has 104 places, 68 transitions, 606 flow [2024-06-14 13:27:00,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=606, PETRI_PLACES=104, PETRI_TRANSITIONS=68} [2024-06-14 13:27:00,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 75 predicate places. [2024-06-14 13:27:00,161 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 68 transitions, 606 flow [2024-06-14 13:27:00,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:00,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:00,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:00,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:27:00,162 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:00,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:00,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1146375408, now seen corresponding path program 3 times [2024-06-14 13:27:00,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:00,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159472764] [2024-06-14 13:27:00,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:00,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:00,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:00,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159472764] [2024-06-14 13:27:00,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159472764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:00,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:00,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:00,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898890140] [2024-06-14 13:27:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:00,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:00,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:00,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 68 transitions, 606 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:00,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:00,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:01,260 INFO L124 PetriNetUnfolderBase]: 219/438 cut-off events. [2024-06-14 13:27:01,260 INFO L125 PetriNetUnfolderBase]: For 8433/8433 co-relation queries the response was YES. [2024-06-14 13:27:01,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 438 events. 219/438 cut-off events. For 8433/8433 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1884 event pairs, 59 based on Foata normal form. 10/447 useless extension candidates. Maximal degree in co-relation 2260. Up to 261 conditions per place. [2024-06-14 13:27:01,263 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 43 selfloop transitions, 31 changer transitions 17/93 dead transitions. [2024-06-14 13:27:01,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 93 transitions, 876 flow [2024-06-14 13:27:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:01,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 13:27:01,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-14 13:27:01,264 INFO L175 Difference]: Start difference. First operand has 104 places, 68 transitions, 606 flow. Second operand 10 states and 123 transitions. [2024-06-14 13:27:01,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 93 transitions, 876 flow [2024-06-14 13:27:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 824 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 13:27:01,272 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 573 flow [2024-06-14 13:27:01,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=573, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2024-06-14 13:27:01,273 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-14 13:27:01,273 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 573 flow [2024-06-14 13:27:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:01,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:01,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:27:01,273 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:01,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1089396360, now seen corresponding path program 4 times [2024-06-14 13:27:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789235566] [2024-06-14 13:27:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:02,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789235566] [2024-06-14 13:27:02,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789235566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:02,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:02,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324366322] [2024-06-14 13:27:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:02,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:02,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 573 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:02,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:02,517 INFO L124 PetriNetUnfolderBase]: 177/355 cut-off events. [2024-06-14 13:27:02,517 INFO L125 PetriNetUnfolderBase]: For 5817/5817 co-relation queries the response was YES. [2024-06-14 13:27:02,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 355 events. 177/355 cut-off events. For 5817/5817 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1417 event pairs, 46 based on Foata normal form. 10/364 useless extension candidates. Maximal degree in co-relation 1755. Up to 222 conditions per place. [2024-06-14 13:27:02,519 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 44 selfloop transitions, 19 changer transitions 19/84 dead transitions. [2024-06-14 13:27:02,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 84 transitions, 813 flow [2024-06-14 13:27:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 13:27:02,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-14 13:27:02,521 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 573 flow. Second operand 10 states and 116 transitions. [2024-06-14 13:27:02,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 84 transitions, 813 flow [2024-06-14 13:27:02,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 84 transitions, 743 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 13:27:02,529 INFO L231 Difference]: Finished difference. Result has 98 places, 57 transitions, 491 flow [2024-06-14 13:27:02,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=491, PETRI_PLACES=98, PETRI_TRANSITIONS=57} [2024-06-14 13:27:02,529 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-14 13:27:02,529 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 57 transitions, 491 flow [2024-06-14 13:27:02,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:02,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:02,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:02,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:27:02,530 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:02,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:02,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1871676156, now seen corresponding path program 5 times [2024-06-14 13:27:02,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:02,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043054482] [2024-06-14 13:27:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:03,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:03,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043054482] [2024-06-14 13:27:03,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043054482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:03,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:03,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:03,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595457047] [2024-06-14 13:27:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:03,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:03,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:03,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:03,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:03,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 57 transitions, 491 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:03,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:03,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:03,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:03,750 INFO L124 PetriNetUnfolderBase]: 188/379 cut-off events. [2024-06-14 13:27:03,750 INFO L125 PetriNetUnfolderBase]: For 6596/6596 co-relation queries the response was YES. [2024-06-14 13:27:03,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 379 events. 188/379 cut-off events. For 6596/6596 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1581 event pairs, 49 based on Foata normal form. 8/386 useless extension candidates. Maximal degree in co-relation 1899. Up to 210 conditions per place. [2024-06-14 13:27:03,753 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 52 selfloop transitions, 19 changer transitions 7/80 dead transitions. [2024-06-14 13:27:03,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 80 transitions, 777 flow [2024-06-14 13:27:03,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-14 13:27:03,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-14 13:27:03,754 INFO L175 Difference]: Start difference. First operand has 98 places, 57 transitions, 491 flow. Second operand 10 states and 119 transitions. [2024-06-14 13:27:03,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 80 transitions, 777 flow [2024-06-14 13:27:03,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 80 transitions, 721 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-14 13:27:03,761 INFO L231 Difference]: Finished difference. Result has 89 places, 55 transitions, 470 flow [2024-06-14 13:27:03,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=470, PETRI_PLACES=89, PETRI_TRANSITIONS=55} [2024-06-14 13:27:03,762 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-14 13:27:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions, 470 flow [2024-06-14 13:27:03,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:03,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:03,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:03,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:27:03,763 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:03,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:03,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1863741514, now seen corresponding path program 6 times [2024-06-14 13:27:03,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:03,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428027599] [2024-06-14 13:27:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:04,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428027599] [2024-06-14 13:27:04,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428027599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:04,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:04,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:04,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566267983] [2024-06-14 13:27:04,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:04,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:04,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:04,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:04,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions, 470 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:04,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:04,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:04,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:04,930 INFO L124 PetriNetUnfolderBase]: 157/318 cut-off events. [2024-06-14 13:27:04,930 INFO L125 PetriNetUnfolderBase]: For 3916/3916 co-relation queries the response was YES. [2024-06-14 13:27:04,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 318 events. 157/318 cut-off events. For 3916/3916 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1228 event pairs, 46 based on Foata normal form. 10/327 useless extension candidates. Maximal degree in co-relation 1471. Up to 210 conditions per place. [2024-06-14 13:27:04,933 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 41 selfloop transitions, 15 changer transitions 15/73 dead transitions. [2024-06-14 13:27:04,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 73 transitions, 680 flow [2024-06-14 13:27:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:04,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-14 13:27:04,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-14 13:27:04,934 INFO L175 Difference]: Start difference. First operand has 89 places, 55 transitions, 470 flow. Second operand 10 states and 113 transitions. [2024-06-14 13:27:04,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 73 transitions, 680 flow [2024-06-14 13:27:04,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 73 transitions, 640 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:04,939 INFO L231 Difference]: Finished difference. Result has 88 places, 50 transitions, 425 flow [2024-06-14 13:27:04,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=425, PETRI_PLACES=88, PETRI_TRANSITIONS=50} [2024-06-14 13:27:04,939 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-14 13:27:04,939 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 50 transitions, 425 flow [2024-06-14 13:27:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:04,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:04,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:04,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:27:04,940 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:04,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1858019782, now seen corresponding path program 1 times [2024-06-14 13:27:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:04,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477407477] [2024-06-14 13:27:04,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:04,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:05,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:05,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477407477] [2024-06-14 13:27:05,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477407477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:05,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:05,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855354048] [2024-06-14 13:27:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:05,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:05,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:05,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 50 transitions, 425 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:05,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:05,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:06,094 INFO L124 PetriNetUnfolderBase]: 135/272 cut-off events. [2024-06-14 13:27:06,095 INFO L125 PetriNetUnfolderBase]: For 2630/2630 co-relation queries the response was YES. [2024-06-14 13:27:06,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 272 events. 135/272 cut-off events. For 2630/2630 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 971 event pairs, 29 based on Foata normal form. 2/273 useless extension candidates. Maximal degree in co-relation 1271. Up to 210 conditions per place. [2024-06-14 13:27:06,096 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 47 selfloop transitions, 15 changer transitions 0/64 dead transitions. [2024-06-14 13:27:06,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 64 transitions, 587 flow [2024-06-14 13:27:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 13:27:06,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-14 13:27:06,098 INFO L175 Difference]: Start difference. First operand has 88 places, 50 transitions, 425 flow. Second operand 9 states and 98 transitions. [2024-06-14 13:27:06,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 64 transitions, 587 flow [2024-06-14 13:27:06,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 549 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:06,101 INFO L231 Difference]: Finished difference. Result has 80 places, 51 transitions, 429 flow [2024-06-14 13:27:06,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=429, PETRI_PLACES=80, PETRI_TRANSITIONS=51} [2024-06-14 13:27:06,102 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 51 predicate places. [2024-06-14 13:27:06,102 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 51 transitions, 429 flow [2024-06-14 13:27:06,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:06,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:06,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:06,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:27:06,103 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:06,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:06,103 INFO L85 PathProgramCache]: Analyzing trace with hash 77452270, now seen corresponding path program 2 times [2024-06-14 13:27:06,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:06,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161231111] [2024-06-14 13:27:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:06,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:06,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:06,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161231111] [2024-06-14 13:27:06,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161231111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:06,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:06,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517756178] [2024-06-14 13:27:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:06,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:06,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:06,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 51 transitions, 429 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:06,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:06,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:06,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:07,218 INFO L124 PetriNetUnfolderBase]: 139/280 cut-off events. [2024-06-14 13:27:07,232 INFO L125 PetriNetUnfolderBase]: For 1922/1922 co-relation queries the response was YES. [2024-06-14 13:27:07,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 280 events. 139/280 cut-off events. For 1922/1922 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1009 event pairs, 42 based on Foata normal form. 2/281 useless extension candidates. Maximal degree in co-relation 1259. Up to 216 conditions per place. [2024-06-14 13:27:07,234 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 42 selfloop transitions, 18 changer transitions 0/62 dead transitions. [2024-06-14 13:27:07,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 62 transitions, 583 flow [2024-06-14 13:27:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:07,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:27:07,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-14 13:27:07,235 INFO L175 Difference]: Start difference. First operand has 80 places, 51 transitions, 429 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:27:07,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 62 transitions, 583 flow [2024-06-14 13:27:07,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 62 transitions, 559 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:07,239 INFO L231 Difference]: Finished difference. Result has 81 places, 52 transitions, 455 flow [2024-06-14 13:27:07,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=81, PETRI_TRANSITIONS=52} [2024-06-14 13:27:07,240 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-14 13:27:07,240 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 52 transitions, 455 flow [2024-06-14 13:27:07,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:07,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:07,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:07,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:27:07,241 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:07,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1596736920, now seen corresponding path program 7 times [2024-06-14 13:27:07,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:07,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352704262] [2024-06-14 13:27:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:07,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:08,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352704262] [2024-06-14 13:27:08,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352704262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:08,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:08,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475162068] [2024-06-14 13:27:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:08,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:08,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:08,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:08,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:08,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 52 transitions, 455 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:08,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:08,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:08,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:08,361 INFO L124 PetriNetUnfolderBase]: 155/316 cut-off events. [2024-06-14 13:27:08,362 INFO L125 PetriNetUnfolderBase]: For 2870/2870 co-relation queries the response was YES. [2024-06-14 13:27:08,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 316 events. 155/316 cut-off events. For 2870/2870 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1223 event pairs, 46 based on Foata normal form. 10/325 useless extension candidates. Maximal degree in co-relation 1418. Up to 199 conditions per place. [2024-06-14 13:27:08,363 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 37 selfloop transitions, 20 changer transitions 11/70 dead transitions. [2024-06-14 13:27:08,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 70 transitions, 661 flow [2024-06-14 13:27:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:08,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 13:27:08,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962962962962963 [2024-06-14 13:27:08,365 INFO L175 Difference]: Start difference. First operand has 81 places, 52 transitions, 455 flow. Second operand 9 states and 107 transitions. [2024-06-14 13:27:08,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 70 transitions, 661 flow [2024-06-14 13:27:08,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 70 transitions, 621 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:27:08,369 INFO L231 Difference]: Finished difference. Result has 85 places, 49 transitions, 436 flow [2024-06-14 13:27:08,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=436, PETRI_PLACES=85, PETRI_TRANSITIONS=49} [2024-06-14 13:27:08,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-14 13:27:08,370 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 49 transitions, 436 flow [2024-06-14 13:27:08,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:08,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:08,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:08,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:27:08,370 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:08,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1596733200, now seen corresponding path program 8 times [2024-06-14 13:27:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821940522] [2024-06-14 13:27:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:09,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821940522] [2024-06-14 13:27:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821940522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:09,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852382204] [2024-06-14 13:27:09,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:09,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:09,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:09,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 49 transitions, 436 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:09,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:09,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:09,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:09,551 INFO L124 PetriNetUnfolderBase]: 143/296 cut-off events. [2024-06-14 13:27:09,552 INFO L125 PetriNetUnfolderBase]: For 2939/2939 co-relation queries the response was YES. [2024-06-14 13:27:09,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 296 events. 143/296 cut-off events. For 2939/2939 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1111 event pairs, 36 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1346. Up to 124 conditions per place. [2024-06-14 13:27:09,553 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 42 selfloop transitions, 17 changer transitions 9/70 dead transitions. [2024-06-14 13:27:09,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 70 transitions, 674 flow [2024-06-14 13:27:09,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:27:09,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:27:09,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 13:27:09,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-14 13:27:09,555 INFO L175 Difference]: Start difference. First operand has 85 places, 49 transitions, 436 flow. Second operand 9 states and 109 transitions. [2024-06-14 13:27:09,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 70 transitions, 674 flow [2024-06-14 13:27:09,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 70 transitions, 609 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:09,560 INFO L231 Difference]: Finished difference. Result has 82 places, 45 transitions, 377 flow [2024-06-14 13:27:09,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=377, PETRI_PLACES=82, PETRI_TRANSITIONS=45} [2024-06-14 13:27:09,561 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-06-14 13:27:09,561 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 45 transitions, 377 flow [2024-06-14 13:27:09,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:09,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:09,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:09,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:27:09,561 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:09,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1602458652, now seen corresponding path program 3 times [2024-06-14 13:27:09,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:09,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698794604] [2024-06-14 13:27:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:09,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698794604] [2024-06-14 13:27:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698794604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:10,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66800097] [2024-06-14 13:27:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:10,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:10,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:10,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 45 transitions, 377 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:10,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:10,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:10,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:10,762 INFO L124 PetriNetUnfolderBase]: 135/280 cut-off events. [2024-06-14 13:27:10,763 INFO L125 PetriNetUnfolderBase]: For 2480/2480 co-relation queries the response was YES. [2024-06-14 13:27:10,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 280 events. 135/280 cut-off events. For 2480/2480 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1042 event pairs, 44 based on Foata normal form. 8/287 useless extension candidates. Maximal degree in co-relation 1220. Up to 212 conditions per place. [2024-06-14 13:27:10,764 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 39 selfloop transitions, 5 changer transitions 13/59 dead transitions. [2024-06-14 13:27:10,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 59 transitions, 537 flow [2024-06-14 13:27:10,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:10,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-14 13:27:10,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:27:10,766 INFO L175 Difference]: Start difference. First operand has 82 places, 45 transitions, 377 flow. Second operand 8 states and 88 transitions. [2024-06-14 13:27:10,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 59 transitions, 537 flow [2024-06-14 13:27:10,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 59 transitions, 489 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:10,770 INFO L231 Difference]: Finished difference. Result has 77 places, 41 transitions, 297 flow [2024-06-14 13:27:10,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=77, PETRI_TRANSITIONS=41} [2024-06-14 13:27:10,770 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-14 13:27:10,771 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 41 transitions, 297 flow [2024-06-14 13:27:10,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:10,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:10,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:10,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:27:10,771 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:10,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:10,772 INFO L85 PathProgramCache]: Analyzing trace with hash 77459710, now seen corresponding path program 4 times [2024-06-14 13:27:10,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:10,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746995340] [2024-06-14 13:27:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:10,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:11,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:11,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746995340] [2024-06-14 13:27:11,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746995340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:11,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:11,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387152995] [2024-06-14 13:27:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:11,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:11,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:11,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:11,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 41 transitions, 297 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:11,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:11,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:11,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:11,991 INFO L124 PetriNetUnfolderBase]: 118/241 cut-off events. [2024-06-14 13:27:11,992 INFO L125 PetriNetUnfolderBase]: For 1675/1675 co-relation queries the response was YES. [2024-06-14 13:27:11,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 241 events. 118/241 cut-off events. For 1675/1675 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 825 event pairs, 36 based on Foata normal form. 2/242 useless extension candidates. Maximal degree in co-relation 1026. Up to 173 conditions per place. [2024-06-14 13:27:11,993 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2024-06-14 13:27:11,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 52 transitions, 431 flow [2024-06-14 13:27:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:27:11,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-14 13:27:11,994 INFO L175 Difference]: Start difference. First operand has 77 places, 41 transitions, 297 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:27:11,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 52 transitions, 431 flow [2024-06-14 13:27:11,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 52 transitions, 395 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 13:27:11,997 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 305 flow [2024-06-14 13:27:11,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2024-06-14 13:27:11,998 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-14 13:27:11,998 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 305 flow [2024-06-14 13:27:11,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:11,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:11,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:11,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:27:11,998 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:11,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash 343156990, now seen corresponding path program 5 times [2024-06-14 13:27:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:11,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088798432] [2024-06-14 13:27:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088798432] [2024-06-14 13:27:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088798432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:12,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:12,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:12,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819627913] [2024-06-14 13:27:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:12,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:12,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:12,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:12,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:12,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 305 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:12,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:12,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:12,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:13,033 INFO L124 PetriNetUnfolderBase]: 115/236 cut-off events. [2024-06-14 13:27:13,033 INFO L125 PetriNetUnfolderBase]: For 1544/1544 co-relation queries the response was YES. [2024-06-14 13:27:13,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 236 events. 115/236 cut-off events. For 1544/1544 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 802 event pairs, 43 based on Foata normal form. 2/237 useless extension candidates. Maximal degree in co-relation 968. Up to 196 conditions per place. [2024-06-14 13:27:13,035 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2024-06-14 13:27:13,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 52 transitions, 427 flow [2024-06-14 13:27:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:27:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:27:13,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 13:27:13,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-14 13:27:13,036 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 305 flow. Second operand 7 states and 79 transitions. [2024-06-14 13:27:13,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 52 transitions, 427 flow [2024-06-14 13:27:13,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 52 transitions, 391 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:13,039 INFO L231 Difference]: Finished difference. Result has 70 places, 42 transitions, 291 flow [2024-06-14 13:27:13,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=70, PETRI_TRANSITIONS=42} [2024-06-14 13:27:13,040 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-14 13:27:13,040 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 42 transitions, 291 flow [2024-06-14 13:27:13,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:13,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:13,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:13,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:27:13,041 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:13,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 323729946, now seen corresponding path program 9 times [2024-06-14 13:27:13,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842242777] [2024-06-14 13:27:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:13,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:14,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842242777] [2024-06-14 13:27:14,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842242777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:14,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:14,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656271722] [2024-06-14 13:27:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:14,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:14,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:14,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:14,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 42 transitions, 291 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:14,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:14,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:14,359 INFO L124 PetriNetUnfolderBase]: 102/213 cut-off events. [2024-06-14 13:27:14,360 INFO L125 PetriNetUnfolderBase]: For 1533/1533 co-relation queries the response was YES. [2024-06-14 13:27:14,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 213 events. 102/213 cut-off events. For 1533/1533 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 699 event pairs, 28 based on Foata normal form. 10/222 useless extension candidates. Maximal degree in co-relation 774. Up to 117 conditions per place. [2024-06-14 13:27:14,361 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 32 selfloop transitions, 12 changer transitions 11/57 dead transitions. [2024-06-14 13:27:14,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 57 transitions, 445 flow [2024-06-14 13:27:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 13:27:14,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 13:27:14,362 INFO L175 Difference]: Start difference. First operand has 70 places, 42 transitions, 291 flow. Second operand 8 states and 95 transitions. [2024-06-14 13:27:14,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 57 transitions, 445 flow [2024-06-14 13:27:14,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 57 transitions, 411 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:27:14,364 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 251 flow [2024-06-14 13:27:14,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2024-06-14 13:27:14,365 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-14 13:27:14,365 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 251 flow [2024-06-14 13:27:14,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-06-14 13:27:14,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:14,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:14,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:27:14,366 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1764037357, now seen corresponding path program 1 times [2024-06-14 13:27:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594041085] [2024-06-14 13:27:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:14,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594041085] [2024-06-14 13:27:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594041085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 13:27:15,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955118860] [2024-06-14 13:27:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 13:27:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 13:27:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 13:27:15,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:15,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-06-14 13:27:15,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:15,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:15,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:15,946 INFO L124 PetriNetUnfolderBase]: 84/183 cut-off events. [2024-06-14 13:27:15,946 INFO L125 PetriNetUnfolderBase]: For 1343/1343 co-relation queries the response was YES. [2024-06-14 13:27:15,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 183 events. 84/183 cut-off events. For 1343/1343 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 565 event pairs, 20 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 634. Up to 115 conditions per place. [2024-06-14 13:27:15,947 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 28 selfloop transitions, 3 changer transitions 21/54 dead transitions. [2024-06-14 13:27:15,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 54 transitions, 395 flow [2024-06-14 13:27:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:27:15,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:27:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 13:27:15,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-14 13:27:15,948 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 251 flow. Second operand 10 states and 102 transitions. [2024-06-14 13:27:15,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 54 transitions, 395 flow [2024-06-14 13:27:15,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 54 transitions, 363 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 13:27:15,957 INFO L231 Difference]: Finished difference. Result has 69 places, 32 transitions, 187 flow [2024-06-14 13:27:15,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=187, PETRI_PLACES=69, PETRI_TRANSITIONS=32} [2024-06-14 13:27:15,959 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-14 13:27:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 32 transitions, 187 flow [2024-06-14 13:27:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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) [2024-06-14 13:27:15,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:15,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:15,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:27:15,964 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:15,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:15,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1674011073, now seen corresponding path program 2 times [2024-06-14 13:27:15,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:15,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496149194] [2024-06-14 13:27:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:15,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:16,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:16,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496149194] [2024-06-14 13:27:16,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496149194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:16,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:16,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:16,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999409979] [2024-06-14 13:27:16,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:16,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:16,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:16,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:16,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:16,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 32 transitions, 187 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:16,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:16,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:16,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:17,047 INFO L124 PetriNetUnfolderBase]: 67/147 cut-off events. [2024-06-14 13:27:17,047 INFO L125 PetriNetUnfolderBase]: For 960/960 co-relation queries the response was YES. [2024-06-14 13:27:17,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 147 events. 67/147 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 410 event pairs, 20 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 470. Up to 64 conditions per place. [2024-06-14 13:27:17,048 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 23 selfloop transitions, 7 changer transitions 10/42 dead transitions. [2024-06-14 13:27:17,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 42 transitions, 289 flow [2024-06-14 13:27:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-14 13:27:17,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-14 13:27:17,049 INFO L175 Difference]: Start difference. First operand has 69 places, 32 transitions, 187 flow. Second operand 8 states and 85 transitions. [2024-06-14 13:27:17,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 42 transitions, 289 flow [2024-06-14 13:27:17,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 42 transitions, 256 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 13:27:17,051 INFO L231 Difference]: Finished difference. Result has 56 places, 28 transitions, 147 flow [2024-06-14 13:27:17,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=147, PETRI_PLACES=56, PETRI_TRANSITIONS=28} [2024-06-14 13:27:17,052 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-14 13:27:17,052 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 28 transitions, 147 flow [2024-06-14 13:27:17,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:17,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:17,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:17,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:27:17,053 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:17,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:17,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1682054643, now seen corresponding path program 3 times [2024-06-14 13:27:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:17,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163262021] [2024-06-14 13:27:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:17,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:17,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163262021] [2024-06-14 13:27:17,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163262021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:17,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:17,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:17,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669226455] [2024-06-14 13:27:17,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:17,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:17,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:17,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:17,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:18,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:18,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 28 transitions, 147 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:18,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:18,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:18,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:18,189 INFO L124 PetriNetUnfolderBase]: 55/127 cut-off events. [2024-06-14 13:27:18,189 INFO L125 PetriNetUnfolderBase]: For 786/786 co-relation queries the response was YES. [2024-06-14 13:27:18,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 127 events. 55/127 cut-off events. For 786/786 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 16 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 392. Up to 63 conditions per place. [2024-06-14 13:27:18,189 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 19 selfloop transitions, 4 changer transitions 14/39 dead transitions. [2024-06-14 13:27:18,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 39 transitions, 245 flow [2024-06-14 13:27:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 13:27:18,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 13:27:18,190 INFO L175 Difference]: Start difference. First operand has 56 places, 28 transitions, 147 flow. Second operand 8 states and 84 transitions. [2024-06-14 13:27:18,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 39 transitions, 245 flow [2024-06-14 13:27:18,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 39 transitions, 225 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 13:27:18,191 INFO L231 Difference]: Finished difference. Result has 52 places, 24 transitions, 119 flow [2024-06-14 13:27:18,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=52, PETRI_TRANSITIONS=24} [2024-06-14 13:27:18,192 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-14 13:27:18,192 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 24 transitions, 119 flow [2024-06-14 13:27:18,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:18,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:27:18,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:18,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:27:18,193 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:27:18,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:27:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1762602625, now seen corresponding path program 4 times [2024-06-14 13:27:18,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:27:18,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412179129] [2024-06-14 13:27:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:27:18,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:27:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:27:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:27:19,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:27:19,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412179129] [2024-06-14 13:27:19,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412179129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:27:19,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:27:19,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:27:19,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001456768] [2024-06-14 13:27:19,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:27:19,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:27:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:27:19,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:27:19,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:27:19,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:27:19,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 24 transitions, 119 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:19,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:27:19,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:27:19,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:27:19,375 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-14 13:27:19,375 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-06-14 13:27:19,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 68 events. 26/68 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 3 based on Foata normal form. 6/73 useless extension candidates. Maximal degree in co-relation 192. Up to 24 conditions per place. [2024-06-14 13:27:19,375 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-14 13:27:19,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 29 transitions, 167 flow [2024-06-14 13:27:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:27:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:27:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 74 transitions. [2024-06-14 13:27:19,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30833333333333335 [2024-06-14 13:27:19,377 INFO L175 Difference]: Start difference. First operand has 52 places, 24 transitions, 119 flow. Second operand 8 states and 74 transitions. [2024-06-14 13:27:19,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 29 transitions, 167 flow [2024-06-14 13:27:19,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 142 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 13:27:19,378 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-06-14 13:27:19,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-06-14 13:27:19,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-14 13:27:19,381 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-06-14 13:27:19,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:27:19,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 13:27:19,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 13:27:19,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 13:27:19,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 13:27:19,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:27:19,386 INFO L445 BasicCegarLoop]: Path program histogram: [9, 5, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:27:19,388 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 13:27:19,388 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 13:27:19,391 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 13:27:19,391 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 13:27:19,392 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 01:27:19 BasicIcfg [2024-06-14 13:27:19,392 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 13:27:19,392 INFO L158 Benchmark]: Toolchain (without parser) took 50926.66ms. Allocated memory was 134.2MB in the beginning and 627.0MB in the end (delta: 492.8MB). Free memory was 100.6MB in the beginning and 297.2MB in the end (delta: -196.7MB). Peak memory consumption was 297.0MB. Max. memory is 16.1GB. [2024-06-14 13:27:19,393 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:27:19,393 INFO L158 Benchmark]: Witness Parser took 1.11ms. Allocated memory is still 134.2MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:27:19,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.83ms. Allocated memory is still 134.2MB. Free memory was 100.1MB in the beginning and 67.9MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-14 13:27:19,393 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.55ms. Allocated memory is still 134.2MB. Free memory was 67.9MB in the beginning and 64.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 13:27:19,393 INFO L158 Benchmark]: Boogie Preprocessor took 62.13ms. Allocated memory is still 134.2MB. Free memory was 64.9MB in the beginning and 62.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:27:19,394 INFO L158 Benchmark]: RCFGBuilder took 619.12ms. Allocated memory is still 134.2MB. Free memory was 62.0MB in the beginning and 66.0MB in the end (delta: -4.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2024-06-14 13:27:19,394 INFO L158 Benchmark]: TraceAbstraction took 49673.27ms. Allocated memory was 134.2MB in the beginning and 627.0MB in the end (delta: 492.8MB). Free memory was 65.3MB in the beginning and 297.2MB in the end (delta: -232.0MB). Peak memory consumption was 260.8MB. Max. memory is 16.1GB. [2024-06-14 13:27:19,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 1.11ms. Allocated memory is still 134.2MB. Free memory is still 105.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 520.83ms. Allocated memory is still 134.2MB. Free memory was 100.1MB in the beginning and 67.9MB in the end (delta: 32.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.55ms. Allocated memory is still 134.2MB. Free memory was 67.9MB in the beginning and 64.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.13ms. Allocated memory is still 134.2MB. Free memory was 64.9MB in the beginning and 62.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 619.12ms. Allocated memory is still 134.2MB. Free memory was 62.0MB in the beginning and 66.0MB in the end (delta: -4.0MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 49673.27ms. Allocated memory was 134.2MB in the beginning and 627.0MB in the end (delta: 492.8MB). Free memory was 65.3MB in the beginning and 297.2MB in the end (delta: -232.0MB). Peak memory consumption was 260.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 810]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 811]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 47 locations, 4 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: 49.6s, OverallIterations: 45, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2708 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2351 mSDsluCounter, 577 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 484 mSDsCounter, 681 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15018 IncrementalHoareTripleChecker+Invalid, 15699 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 681 mSolverCounterUnsat, 93 mSDtfsCounter, 15018 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 430 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=776occurred in iteration=23, InterpolantAutomatonStates: 349, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 34.5s InterpolantComputationTime, 692 NumberOfCodeBlocks, 692 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 647 ConstructedInterpolants, 0 QuantifiedInterpolants, 26484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 45 InterpolantComputations, 45 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 13:27:19,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE