./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-76401ed-m [2024-06-20 16:22:37,398 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 16:22:37,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 16:22:37,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 16:22:37,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 16:22:37,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 16:22:37,451 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 16:22:37,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 16:22:37,452 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 16:22:37,452 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 16:22:37,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 16:22:37,453 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 16:22:37,453 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 16:22:37,454 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 16:22:37,454 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 16:22:37,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 16:22:37,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 16:22:37,455 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 16:22:37,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 16:22:37,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 16:22:37,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 16:22:37,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 16:22:37,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 16:22:37,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 16:22:37,457 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 16:22:37,457 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 16:22:37,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 16:22:37,458 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 16:22:37,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 16:22:37,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 16:22:37,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 16:22:37,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 16:22:37,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:22:37,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 16:22:37,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 16:22:37,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 16:22:37,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 16:22:37,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 16:22:37,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 16:22:37,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 16:22:37,462 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 16:22:37,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 16:22:37,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 16:22:37,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 16:22:37,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 16:22:37,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 16:22:37,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 16:22:37,635 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 16:22:37,635 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 16:22:37,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-20 16:22:38,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 16:22:38,863 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 16:22:38,863 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-20 16:22:38,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e963d60/0fb9954b5ec04a8e932a0490ddabf47c/FLAGa8c1865a6 [2024-06-20 16:22:38,892 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39e963d60/0fb9954b5ec04a8e932a0490ddabf47c [2024-06-20 16:22:38,894 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 16:22:38,895 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 16:22:38,896 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-20 16:22:39,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 16:22:39,003 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 16:22:39,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 16:22:39,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 16:22:39,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 16:22:39,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:22:38" (1/2) ... [2024-06-20 16:22:39,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6004d8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:39, skipping insertion in model container [2024-06-20 16:22:39,021 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 04:22:38" (1/2) ... [2024-06-20 16:22:39,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20c6cdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 04:22:39, skipping insertion in model container [2024-06-20 16:22:39,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:22:39" (2/2) ... [2024-06-20 16:22:39,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6004d8d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39, skipping insertion in model container [2024-06-20 16:22:39,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:22:39" (2/2) ... [2024-06-20 16:22:39,025 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 16:22:39,070 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 16:22:39,071 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-06-20 16:22:39,071 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) [2024-06-20 16:22:39,071 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 16:22:39,072 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-20 16:22:39,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 16:22:39,440 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:22:39,450 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 16:22:39,532 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 16:22:39,559 INFO L206 MainTranslator]: Completed translation [2024-06-20 16:22:39,559 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39 WrapperNode [2024-06-20 16:22:39,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 16:22:39,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 16:22:39,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 16:22:39,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 16:22:39,565 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 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,576 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 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,608 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-20 16:22:39,608 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 16:22:39,609 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 16:22:39,609 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 16:22:39,609 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 16:22:39,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,637 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]. [2024-06-20 16:22:39,641 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 16:22:39,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 16:22:39,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 16:22:39,671 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 16:22:39,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (1/1) ... [2024-06-20 16:22:39,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 16:22:39,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 16:22:39,705 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) [2024-06-20 16:22:39,744 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 [2024-06-20 16:22:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 16:22:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 16:22:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-20 16:22:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-20 16:22:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-20 16:22:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-20 16:22:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 16:22:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 16:22:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 16:22:39,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 16:22:39,756 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 16:22:39,888 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 16:22:39,890 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 16:22:40,152 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 16:22:40,153 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 16:22:40,283 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 16:22:40,284 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-20 16:22:40,286 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:22:40 BoogieIcfgContainer [2024-06-20 16:22:40,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 16:22:40,289 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 16:22:40,289 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 16:22:40,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 16:22:40,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 04:22:38" (1/4) ... [2024-06-20 16:22:40,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f95abbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 04:22:40, skipping insertion in model container [2024-06-20 16:22:40,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 04:22:39" (2/4) ... [2024-06-20 16:22:40,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f95abbf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:22:40, skipping insertion in model container [2024-06-20 16:22:40,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 04:22:39" (3/4) ... [2024-06-20 16:22:40,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f95abbf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 04:22:40, skipping insertion in model container [2024-06-20 16:22:40,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 04:22:40" (4/4) ... [2024-06-20 16:22:40,298 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-20 16:22:40,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 16:22:40,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-20 16:22:40,311 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 16:22:40,349 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-20 16:22:40,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 16:22:40,402 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-20 16:22:40,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:22:40,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-20 16:22:40,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-20 16:22:40,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-20 16:22:40,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 16:22:40,423 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;@7d32a877, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 16:22:40,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-20 16:22:40,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 16:22:40,426 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-20 16:22:40,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 16:22:40,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:40,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-20 16:22:40,427 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)] === [2024-06-20 16:22:40,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-20 16:22:40,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:40,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978771251] [2024-06-20 16:22:40,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:40,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:41,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:41,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978771251] [2024-06-20 16:22:41,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978771251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:41,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:41,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 16:22:41,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591731431] [2024-06-20 16:22:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 16:22:41,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:41,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 16:22:41,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 16:22:41,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-20 16:22:41,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:41,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:41,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-20 16:22:41,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:41,606 INFO L124 PetriNetUnfolderBase]: 162/320 cut-off events. [2024-06-20 16:22:41,607 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-20 16:22:41,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 320 events. 162/320 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1209 event pairs, 97 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 620. Up to 288 conditions per place. [2024-06-20 16:22:41,612 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-20 16:22:41,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-20 16:22:41,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 16:22:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 16:22:41,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-20 16:22:41,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-20 16:22:41,622 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-20 16:22:41,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-20 16:22:41,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 16:22:41,625 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-20 16:22:41,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-20 16:22:41,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-20 16:22:41,630 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-20 16:22:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:41,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:41,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:41,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 16:22:41,631 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)] === [2024-06-20 16:22:41,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-20 16:22:41,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:41,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159892007] [2024-06-20 16:22:41,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:41,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:42,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:42,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159892007] [2024-06-20 16:22:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159892007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:42,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:42,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 16:22:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680422644] [2024-06-20 16:22:42,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:42,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 16:22:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 16:22:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 16:22:42,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-20 16:22:42,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-06-20 16:22:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-20 16:22:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:42,336 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-20 16:22:42,336 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-20 16:22:42,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1262 event pairs, 94 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-20 16:22:42,338 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-20 16:22:42,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-20 16:22:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 16:22:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 16:22:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-20 16:22:42,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-20 16:22:42,340 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-20 16:22:42,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-20 16:22:42,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-20 16:22:42,341 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-20 16:22:42,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-20 16:22:42,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-20 16:22:42,342 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-20 16:22:42,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-06-20 16:22:42,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:42,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:42,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 16:22:42,343 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)] === [2024-06-20 16:22:42,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:42,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-20 16:22:42,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:42,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201978810] [2024-06-20 16:22:42,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:42,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201978810] [2024-06-20 16:22:42,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201978810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:42,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-20 16:22:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000304931] [2024-06-20 16:22:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:42,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 16:22:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:42,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 16:22:42,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-20 16:22:42,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-20 16:22:42,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:42,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:42,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-20 16:22:42,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:42,998 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-20 16:22:42,999 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-20 16:22:42,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1230 event pairs, 52 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-20 16:22:43,001 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-20 16:22:43,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-20 16:22:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:22:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:22:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-20 16:22:43,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-20 16:22:43,002 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-20 16:22:43,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-20 16:22:43,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-20 16:22:43,004 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-20 16:22:43,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-20 16:22:43,005 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-20 16:22:43,005 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-20 16:22:43,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:22:43,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:43,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:43,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 16:22:43,006 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)] === [2024-06-20 16:22:43,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:43,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-20 16:22:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:43,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750696315] [2024-06-20 16:22:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:43,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:43,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:43,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750696315] [2024-06-20 16:22:43,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750696315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:43,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:43,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:43,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656469117] [2024-06-20 16:22:43,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:43,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:43,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:43,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:44,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-20 16:22:44,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2024-06-20 16:22:44,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:44,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-20 16:22:44,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:44,166 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-20 16:22:44,166 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-06-20 16:22:44,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1159 event pairs, 30 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-20 16:22:44,168 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-20 16:22:44,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-20 16:22:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-20 16:22:44,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-20 16:22:44,173 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-20 16:22:44,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-20 16:22:44,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:44,177 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-20 16:22:44,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-20 16:22:44,178 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-20 16:22:44,178 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-20 16:22:44,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2024-06-20 16:22:44,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:44,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-20 16:22:44,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:22:44,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-20 16:22:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:44,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752415716] [2024-06-20 16:22:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:44,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:44,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752415716] [2024-06-20 16:22:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752415716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:44,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:44,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 16:22:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171183284] [2024-06-20 16:22:44,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:44,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-20 16:22:44,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-20 16:22:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-20 16:22:44,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-20 16:22:44,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 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) [2024-06-20 16:22:44,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:44,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-20 16:22:44,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:44,885 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2024-06-20 16:22:44,886 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-20 16:22:44,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 294 events. 147/294 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1061 event pairs, 53 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-20 16:22:44,887 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-20 16:22:44,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 196 flow [2024-06-20 16:22:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 16:22:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 16:22:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-06-20 16:22:44,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-20 16:22:44,890 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 63 transitions. [2024-06-20 16:22:44,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 196 flow [2024-06-20 16:22:44,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 176 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:44,894 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-20 16:22:44,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-20 16:22:44,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-20 16:22:44,897 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-20 16:22:44,898 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) [2024-06-20 16:22:44,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:44,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:44,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-20 16:22:44,902 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)] === [2024-06-20 16:22:44,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:44,903 INFO L85 PathProgramCache]: Analyzing trace with hash 29843198, now seen corresponding path program 1 times [2024-06-20 16:22:44,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:44,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40685232] [2024-06-20 16:22:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:44,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40685232] [2024-06-20 16:22:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40685232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:45,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:45,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:45,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15303326] [2024-06-20 16:22:45,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:45,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:45,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:45,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:45,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-20 16:22:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:45,708 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-20 16:22:45,708 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-06-20 16:22:45,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 329 events. 172/329 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 64 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 953. Up to 298 conditions per place. [2024-06-20 16:22:45,710 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-20 16:22:45,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 215 flow [2024-06-20 16:22:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-20 16:22:45,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-20 16:22:45,711 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 68 transitions. [2024-06-20 16:22:45,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 215 flow [2024-06-20 16:22:45,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:45,713 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-20 16:22:45,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-20 16:22:45,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-20 16:22:45,713 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-20 16:22:45,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-20 16:22:45,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:45,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:45,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-20 16:22:45,714 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)] === [2024-06-20 16:22:45,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:45,715 INFO L85 PathProgramCache]: Analyzing trace with hash 697773711, now seen corresponding path program 1 times [2024-06-20 16:22:45,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:45,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678661026] [2024-06-20 16:22:45,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:45,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:46,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:46,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678661026] [2024-06-20 16:22:46,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678661026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:46,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:46,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:46,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548009197] [2024-06-20 16:22:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:46,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:46,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:46,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:46,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-20 16:22:46,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:46,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:46,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:46,524 INFO L124 PetriNetUnfolderBase]: 188/348 cut-off events. [2024-06-20 16:22:46,524 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-20 16:22:46,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 348 events. 188/348 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1221 event pairs, 71 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1111. Up to 311 conditions per place. [2024-06-20 16:22:46,526 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-20 16:22:46,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 253 flow [2024-06-20 16:22:46,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-20 16:22:46,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-20 16:22:46,528 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 71 transitions. [2024-06-20 16:22:46,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 253 flow [2024-06-20 16:22:46,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 236 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:46,530 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-20 16:22:46,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-20 16:22:46,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-20 16:22:46,530 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-20 16:22:46,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-20 16:22:46,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:46,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:46,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-20 16:22:46,531 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)] === [2024-06-20 16:22:46,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash 703487631, now seen corresponding path program 2 times [2024-06-20 16:22:46,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:46,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111100901] [2024-06-20 16:22:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:47,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:47,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111100901] [2024-06-20 16:22:47,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111100901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:47,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:47,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-20 16:22:47,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989030351] [2024-06-20 16:22:47,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:47,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-20 16:22:47,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:47,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-20 16:22:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-20 16:22:47,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:47,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-20 16:22:47,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:47,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:47,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:47,291 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-20 16:22:47,291 INFO L125 PetriNetUnfolderBase]: For 1247/1249 co-relation queries the response was YES. [2024-06-20 16:22:47,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 346 events. 186/346 cut-off events. For 1247/1249 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1223 event pairs, 75 based on Foata normal form. 3/349 useless extension candidates. Maximal degree in co-relation 1174. Up to 302 conditions per place. [2024-06-20 16:22:47,293 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-20 16:22:47,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 263 flow [2024-06-20 16:22:47,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-20 16:22:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-20 16:22:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-20 16:22:47,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-20 16:22:47,294 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 70 transitions. [2024-06-20 16:22:47,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 263 flow [2024-06-20 16:22:47,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 246 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:47,296 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-20 16:22:47,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-20 16:22:47,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-20 16:22:47,296 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-20 16:22:47,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 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) [2024-06-20 16:22:47,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:47,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-20 16:22:47,297 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)] === [2024-06-20 16:22:47,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-20 16:22:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533283405] [2024-06-20 16:22:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:47,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:47,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533283405] [2024-06-20 16:22:47,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533283405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:47,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:47,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145781880] [2024-06-20 16:22:47,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:47,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:47,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:47,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:47,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:47,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:47,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:47,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:47,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:48,095 INFO L124 PetriNetUnfolderBase]: 171/323 cut-off events. [2024-06-20 16:22:48,096 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-20 16:22:48,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 323 events. 171/323 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 62 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1134. Up to 294 conditions per place. [2024-06-20 16:22:48,097 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 32 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-06-20 16:22:48,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 297 flow [2024-06-20 16:22:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-20 16:22:48,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:22:48,099 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 7 states and 77 transitions. [2024-06-20 16:22:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 297 flow [2024-06-20 16:22:48,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 270 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-20 16:22:48,100 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 199 flow [2024-06-20 16:22:48,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-20 16:22:48,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-20 16:22:48,101 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 199 flow [2024-06-20 16:22:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:48,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:48,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:48,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-20 16:22:48,102 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)] === [2024-06-20 16:22:48,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 10610739, now seen corresponding path program 1 times [2024-06-20 16:22:48,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:48,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457568489] [2024-06-20 16:22:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:48,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:48,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:48,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457568489] [2024-06-20 16:22:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457568489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:48,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:48,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:48,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474113362] [2024-06-20 16:22:48,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:48,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:48,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:48,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:48,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:48,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:48,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:48,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:48,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:48,986 INFO L124 PetriNetUnfolderBase]: 188/349 cut-off events. [2024-06-20 16:22:48,987 INFO L125 PetriNetUnfolderBase]: For 1837/1837 co-relation queries the response was YES. [2024-06-20 16:22:48,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 349 events. 188/349 cut-off events. For 1837/1837 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1226 event pairs, 49 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1306. Up to 291 conditions per place. [2024-06-20 16:22:48,989 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-20 16:22:49,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 355 flow [2024-06-20 16:22:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-20 16:22:49,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-20 16:22:49,005 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 199 flow. Second operand 7 states and 85 transitions. [2024-06-20 16:22:49,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 355 flow [2024-06-20 16:22:49,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 332 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:49,007 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 232 flow [2024-06-20 16:22:49,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-20 16:22:49,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-20 16:22:49,008 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 232 flow [2024-06-20 16:22:49,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:49,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:49,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:49,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-20 16:22:49,009 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)] === [2024-06-20 16:22:49,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:49,010 INFO L85 PathProgramCache]: Analyzing trace with hash 156149999, now seen corresponding path program 1 times [2024-06-20 16:22:49,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:49,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162935603] [2024-06-20 16:22:49,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:49,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:49,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:49,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162935603] [2024-06-20 16:22:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162935603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:49,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:49,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995583085] [2024-06-20 16:22:49,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:49,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:49,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:49,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:49,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:49,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:49,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-20 16:22:49,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:49,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:49,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:49,861 INFO L124 PetriNetUnfolderBase]: 205/368 cut-off events. [2024-06-20 16:22:49,862 INFO L125 PetriNetUnfolderBase]: For 2148/2148 co-relation queries the response was YES. [2024-06-20 16:22:49,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 368 events. 205/368 cut-off events. For 2148/2148 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1251 event pairs, 50 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1486. Up to 345 conditions per place. [2024-06-20 16:22:49,863 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-20 16:22:49,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 372 flow [2024-06-20 16:22:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-20 16:22:49,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-20 16:22:49,865 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 232 flow. Second operand 7 states and 74 transitions. [2024-06-20 16:22:49,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 372 flow [2024-06-20 16:22:49,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 352 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:49,867 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 253 flow [2024-06-20 16:22:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-20 16:22:49,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-20 16:22:49,868 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 253 flow [2024-06-20 16:22:49,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-20 16:22:49,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:49,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:49,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-20 16:22:49,869 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)] === [2024-06-20 16:22:49,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:49,869 INFO L85 PathProgramCache]: Analyzing trace with hash 156149813, now seen corresponding path program 2 times [2024-06-20 16:22:49,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:49,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391128823] [2024-06-20 16:22:49,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:49,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391128823] [2024-06-20 16:22:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391128823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:50,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:50,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:50,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068079004] [2024-06-20 16:22:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:50,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:50,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:50,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:50,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:50,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:50,625 INFO L124 PetriNetUnfolderBase]: 204/374 cut-off events. [2024-06-20 16:22:50,625 INFO L125 PetriNetUnfolderBase]: For 2784/2784 co-relation queries the response was YES. [2024-06-20 16:22:50,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 374 events. 204/374 cut-off events. For 2784/2784 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 48 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1589. Up to 301 conditions per place. [2024-06-20 16:22:50,627 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-20 16:22:50,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 453 flow [2024-06-20 16:22:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:50,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-20 16:22:50,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-20 16:22:50,628 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 253 flow. Second operand 7 states and 86 transitions. [2024-06-20 16:22:50,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 453 flow [2024-06-20 16:22:50,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 428 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:50,631 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 301 flow [2024-06-20 16:22:50,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-20 16:22:50,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-20 16:22:50,632 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 301 flow [2024-06-20 16:22:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:50,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:50,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-20 16:22:50,632 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)] === [2024-06-20 16:22:50,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash 333281519, now seen corresponding path program 2 times [2024-06-20 16:22:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:50,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404977621] [2024-06-20 16:22:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:50,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:51,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:51,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404977621] [2024-06-20 16:22:51,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404977621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:51,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:51,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387371671] [2024-06-20 16:22:51,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:51,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:51,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:51,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:51,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-20 16:22:51,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:51,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:51,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:51,435 INFO L124 PetriNetUnfolderBase]: 219/392 cut-off events. [2024-06-20 16:22:51,435 INFO L125 PetriNetUnfolderBase]: For 3308/3312 co-relation queries the response was YES. [2024-06-20 16:22:51,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 392 events. 219/392 cut-off events. For 3308/3312 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1361 event pairs, 55 based on Foata normal form. 5/397 useless extension candidates. Maximal degree in co-relation 1750. Up to 352 conditions per place. [2024-06-20 16:22:51,438 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-20 16:22:51,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 491 flow [2024-06-20 16:22:51,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-20 16:22:51,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35023041474654376 [2024-06-20 16:22:51,441 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 301 flow. Second operand 7 states and 76 transitions. [2024-06-20 16:22:51,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 491 flow [2024-06-20 16:22:51,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 469 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:51,444 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 354 flow [2024-06-20 16:22:51,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-20 16:22:51,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-20 16:22:51,445 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 354 flow [2024-06-20 16:22:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-20 16:22:51,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:51,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:51,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-20 16:22:51,446 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)] === [2024-06-20 16:22:51,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1385657019, now seen corresponding path program 3 times [2024-06-20 16:22:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105828296] [2024-06-20 16:22:51,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:52,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:52,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105828296] [2024-06-20 16:22:52,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105828296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:52,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:52,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699257782] [2024-06-20 16:22:52,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:52,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:52,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:52,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:52,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:52,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:52,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:52,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:52,224 INFO L124 PetriNetUnfolderBase]: 202/374 cut-off events. [2024-06-20 16:22:52,224 INFO L125 PetriNetUnfolderBase]: For 3804/3806 co-relation queries the response was YES. [2024-06-20 16:22:52,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 374 events. 202/374 cut-off events. For 3804/3806 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 58 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1723. Up to 285 conditions per place. [2024-06-20 16:22:52,226 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2024-06-20 16:22:52,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 540 flow [2024-06-20 16:22:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-20 16:22:52,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-20 16:22:52,227 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 354 flow. Second operand 7 states and 85 transitions. [2024-06-20 16:22:52,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 540 flow [2024-06-20 16:22:52,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 514 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:52,233 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 397 flow [2024-06-20 16:22:52,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-20 16:22:52,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-20 16:22:52,234 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 397 flow [2024-06-20 16:22:52,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2024-06-20 16:22:52,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:52,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:52,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-20 16:22:52,235 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)] === [2024-06-20 16:22:52,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 333518669, now seen corresponding path program 3 times [2024-06-20 16:22:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:52,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494301652] [2024-06-20 16:22:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:52,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:52,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494301652] [2024-06-20 16:22:52,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494301652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:52,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:52,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-20 16:22:52,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680931124] [2024-06-20 16:22:52,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:52,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-20 16:22:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-20 16:22:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-20 16:22:52,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:52,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-20 16:22:52,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:52,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:52,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:52,937 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-20 16:22:52,938 INFO L125 PetriNetUnfolderBase]: For 4102/4106 co-relation queries the response was YES. [2024-06-20 16:22:52,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 383 events. 213/383 cut-off events. For 4102/4106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1348 event pairs, 54 based on Foata normal form. 5/388 useless extension candidates. Maximal degree in co-relation 1846. Up to 344 conditions per place. [2024-06-20 16:22:52,940 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-06-20 16:22:52,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 531 flow [2024-06-20 16:22:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-20 16:22:52,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-20 16:22:52,941 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 397 flow. Second operand 7 states and 74 transitions. [2024-06-20 16:22:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 531 flow [2024-06-20 16:22:52,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 468 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-20 16:22:52,946 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 375 flow [2024-06-20 16:22:52,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-20 16:22:52,947 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-20 16:22:52,948 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 375 flow [2024-06-20 16:22:52,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 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) [2024-06-20 16:22:52,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:52,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:52,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-20 16:22:52,948 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)] === [2024-06-20 16:22:52,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:52,949 INFO L85 PathProgramCache]: Analyzing trace with hash -45321528, now seen corresponding path program 1 times [2024-06-20 16:22:52,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326653858] [2024-06-20 16:22:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:53,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326653858] [2024-06-20 16:22:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326653858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:53,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:53,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195256926] [2024-06-20 16:22:53,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:53,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:53,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:53,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:53,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 375 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-20 16:22:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:53,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:53,887 INFO L124 PetriNetUnfolderBase]: 229/422 cut-off events. [2024-06-20 16:22:53,887 INFO L125 PetriNetUnfolderBase]: For 4627/4627 co-relation queries the response was YES. [2024-06-20 16:22:53,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 422 events. 229/422 cut-off events. For 4627/4627 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1581 event pairs, 47 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 2002. Up to 336 conditions per place. [2024-06-20 16:22:53,890 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-06-20 16:22:53,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 673 flow [2024-06-20 16:22:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-20 16:22:53,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-20 16:22:53,891 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 375 flow. Second operand 8 states and 97 transitions. [2024-06-20 16:22:53,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 673 flow [2024-06-20 16:22:53,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 628 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:53,895 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 506 flow [2024-06-20 16:22:53,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-06-20 16:22:53,896 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-20 16:22:53,896 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 506 flow [2024-06-20 16:22:53,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-20 16:22:53,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:53,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:53,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-20 16:22:53,897 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)] === [2024-06-20 16:22:53,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:53,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1512606054, now seen corresponding path program 2 times [2024-06-20 16:22:53,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:53,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761958912] [2024-06-20 16:22:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:53,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761958912] [2024-06-20 16:22:54,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761958912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:54,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:54,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:54,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311062489] [2024-06-20 16:22:54,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:54,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:54,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:54,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:54,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:54,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:22:54,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 506 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-20 16:22:54,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:54,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:22:54,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:54,881 INFO L124 PetriNetUnfolderBase]: 228/420 cut-off events. [2024-06-20 16:22:54,882 INFO L125 PetriNetUnfolderBase]: For 5135/5135 co-relation queries the response was YES. [2024-06-20 16:22:54,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 420 events. 228/420 cut-off events. For 5135/5135 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 50 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2069. Up to 321 conditions per place. [2024-06-20 16:22:54,884 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-20 16:22:54,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 692 flow [2024-06-20 16:22:54,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-20 16:22:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-20 16:22:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-20 16:22:54,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-20 16:22:54,886 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 506 flow. Second operand 7 states and 85 transitions. [2024-06-20 16:22:54,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 692 flow [2024-06-20 16:22:54,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 658 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:54,891 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 538 flow [2024-06-20 16:22:54,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-06-20 16:22:54,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-20 16:22:54,892 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 538 flow [2024-06-20 16:22:54,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-20 16:22:54,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:54,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:54,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-20 16:22:54,893 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)] === [2024-06-20 16:22:54,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash 541959275, now seen corresponding path program 1 times [2024-06-20 16:22:54,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:54,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750202875] [2024-06-20 16:22:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:54,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750202875] [2024-06-20 16:22:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750202875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:55,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226659146] [2024-06-20 16:22:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:55,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:55,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:55,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:55,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:55,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:55,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:55,763 INFO L124 PetriNetUnfolderBase]: 246/442 cut-off events. [2024-06-20 16:22:55,764 INFO L125 PetriNetUnfolderBase]: For 5920/5920 co-relation queries the response was YES. [2024-06-20 16:22:55,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2268 conditions, 442 events. 246/442 cut-off events. For 5920/5920 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1627 event pairs, 50 based on Foata normal form. 2/444 useless extension candidates. Maximal degree in co-relation 2232. Up to 359 conditions per place. [2024-06-20 16:22:55,766 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 58 selfloop transitions, 24 changer transitions 0/84 dead transitions. [2024-06-20 16:22:55,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 766 flow [2024-06-20 16:22:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:55,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:55,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-20 16:22:55,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:22:55,768 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 538 flow. Second operand 8 states and 88 transitions. [2024-06-20 16:22:55,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 766 flow [2024-06-20 16:22:55,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 84 transitions, 708 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:55,773 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 556 flow [2024-06-20 16:22:55,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=556, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-20 16:22:55,773 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2024-06-20 16:22:55,773 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 556 flow [2024-06-20 16:22:55,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:55,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:55,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:55,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-20 16:22:55,774 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)] === [2024-06-20 16:22:55,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash 545678345, now seen corresponding path program 2 times [2024-06-20 16:22:55,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:55,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371723144] [2024-06-20 16:22:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:55,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:56,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:56,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371723144] [2024-06-20 16:22:56,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371723144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:56,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:56,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374881109] [2024-06-20 16:22:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:56,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:56,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:56,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:56,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:56,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:56,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:56,585 INFO L124 PetriNetUnfolderBase]: 267/476 cut-off events. [2024-06-20 16:22:56,585 INFO L125 PetriNetUnfolderBase]: For 6622/6622 co-relation queries the response was YES. [2024-06-20 16:22:56,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 476 events. 267/476 cut-off events. For 6622/6622 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1784 event pairs, 58 based on Foata normal form. 2/478 useless extension candidates. Maximal degree in co-relation 2487. Up to 348 conditions per place. [2024-06-20 16:22:56,588 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 32 changer transitions 0/90 dead transitions. [2024-06-20 16:22:56,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 908 flow [2024-06-20 16:22:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-20 16:22:56,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:22:56,589 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 556 flow. Second operand 8 states and 92 transitions. [2024-06-20 16:22:56,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 908 flow [2024-06-20 16:22:56,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 850 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:56,596 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 637 flow [2024-06-20 16:22:56,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-06-20 16:22:56,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-20 16:22:56,596 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 637 flow [2024-06-20 16:22:56,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:56,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:56,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:56,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-20 16:22:56,597 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)] === [2024-06-20 16:22:56,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:56,597 INFO L85 PathProgramCache]: Analyzing trace with hash 545684142, now seen corresponding path program 1 times [2024-06-20 16:22:56,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:56,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64031026] [2024-06-20 16:22:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:56,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:57,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64031026] [2024-06-20 16:22:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64031026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:57,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747546118] [2024-06-20 16:22:57,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:57,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:57,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:57,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 637 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:57,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:57,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:57,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:57,430 INFO L124 PetriNetUnfolderBase]: 270/481 cut-off events. [2024-06-20 16:22:57,431 INFO L125 PetriNetUnfolderBase]: For 7331/7331 co-relation queries the response was YES. [2024-06-20 16:22:57,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 481 events. 270/481 cut-off events. For 7331/7331 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1804 event pairs, 56 based on Foata normal form. 1/482 useless extension candidates. Maximal degree in co-relation 2578. Up to 448 conditions per place. [2024-06-20 16:22:57,434 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 72 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-20 16:22:57,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 855 flow [2024-06-20 16:22:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:57,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-20 16:22:57,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-20 16:22:57,435 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 637 flow. Second operand 8 states and 82 transitions. [2024-06-20 16:22:57,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 855 flow [2024-06-20 16:22:57,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 818 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-20 16:22:57,446 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 651 flow [2024-06-20 16:22:57,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=651, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-20 16:22:57,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-20 16:22:57,447 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 651 flow [2024-06-20 16:22:57,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:57,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:57,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-20 16:22:57,448 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)] === [2024-06-20 16:22:57,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1542491959, now seen corresponding path program 3 times [2024-06-20 16:22:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127377084] [2024-06-20 16:22:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:58,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:58,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127377084] [2024-06-20 16:22:58,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127377084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:58,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:58,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:58,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582479961] [2024-06-20 16:22:58,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:58,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:58,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:58,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:58,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:58,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:58,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 651 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:58,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:58,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:58,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:58,264 INFO L124 PetriNetUnfolderBase]: 266/475 cut-off events. [2024-06-20 16:22:58,264 INFO L125 PetriNetUnfolderBase]: For 7627/7627 co-relation queries the response was YES. [2024-06-20 16:22:58,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 475 events. 266/475 cut-off events. For 7627/7627 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1763 event pairs, 54 based on Foata normal form. 2/477 useless extension candidates. Maximal degree in co-relation 2580. Up to 350 conditions per place. [2024-06-20 16:22:58,267 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 36 changer transitions 0/91 dead transitions. [2024-06-20 16:22:58,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 907 flow [2024-06-20 16:22:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 16:22:58,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 16:22:58,269 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 651 flow. Second operand 8 states and 90 transitions. [2024-06-20 16:22:58,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 907 flow [2024-06-20 16:22:58,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 858 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:58,277 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 679 flow [2024-06-20 16:22:58,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=679, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-06-20 16:22:58,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-20 16:22:58,277 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 679 flow [2024-06-20 16:22:58,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:58,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:58,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:58,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-20 16:22:58,278 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)] === [2024-06-20 16:22:58,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:58,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1741793749, now seen corresponding path program 4 times [2024-06-20 16:22:58,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:58,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524059246] [2024-06-20 16:22:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:58,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:58,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524059246] [2024-06-20 16:22:58,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524059246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:58,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:58,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:58,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484550891] [2024-06-20 16:22:58,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:58,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:58,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:58,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:58,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:58,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:58,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:59,147 INFO L124 PetriNetUnfolderBase]: 282/502 cut-off events. [2024-06-20 16:22:59,148 INFO L125 PetriNetUnfolderBase]: For 9037/9041 co-relation queries the response was YES. [2024-06-20 16:22:59,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2871 conditions, 502 events. 282/502 cut-off events. For 9037/9041 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1889 event pairs, 67 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2830. Up to 329 conditions per place. [2024-06-20 16:22:59,152 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 43 changer transitions 0/98 dead transitions. [2024-06-20 16:22:59,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 98 transitions, 1111 flow [2024-06-20 16:22:59,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:22:59,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:22:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-20 16:22:59,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-20 16:22:59,153 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 679 flow. Second operand 8 states and 95 transitions. [2024-06-20 16:22:59,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 98 transitions, 1111 flow [2024-06-20 16:22:59,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 1046 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:22:59,165 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 787 flow [2024-06-20 16:22:59,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=787, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-06-20 16:22:59,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-20 16:22:59,165 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 787 flow [2024-06-20 16:22:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:59,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:22:59,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:22:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-20 16:22:59,166 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)] === [2024-06-20 16:22:59,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:22:59,166 INFO L85 PathProgramCache]: Analyzing trace with hash -5687394, now seen corresponding path program 2 times [2024-06-20 16:22:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:22:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092447912] [2024-06-20 16:22:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:22:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:22:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:22:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:22:59,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:22:59,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092447912] [2024-06-20 16:22:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092447912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:22:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:22:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:22:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511609018] [2024-06-20 16:22:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:22:59,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:22:59,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:22:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:22:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:22:59,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:22:59,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 787 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:22:59,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:22:59,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:22:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:22:59,983 INFO L124 PetriNetUnfolderBase]: 285/507 cut-off events. [2024-06-20 16:22:59,983 INFO L125 PetriNetUnfolderBase]: For 9758/9762 co-relation queries the response was YES. [2024-06-20 16:22:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2990 conditions, 507 events. 285/507 cut-off events. For 9758/9762 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1938 event pairs, 61 based on Foata normal form. 5/512 useless extension candidates. Maximal degree in co-relation 2948. Up to 446 conditions per place. [2024-06-20 16:22:59,987 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2024-06-20 16:22:59,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 99 transitions, 1095 flow [2024-06-20 16:23:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-20 16:23:00,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-20 16:23:00,001 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 787 flow. Second operand 8 states and 86 transitions. [2024-06-20 16:23:00,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 99 transitions, 1095 flow [2024-06-20 16:23:00,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 997 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-20 16:23:00,017 INFO L231 Difference]: Finished difference. Result has 95 places, 89 transitions, 803 flow [2024-06-20 16:23:00,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=803, PETRI_PLACES=95, PETRI_TRANSITIONS=89} [2024-06-20 16:23:00,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 65 predicate places. [2024-06-20 16:23:00,018 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 89 transitions, 803 flow [2024-06-20 16:23:00,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:00,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:00,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-20 16:23:00,019 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)] === [2024-06-20 16:23:00,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1741788169, now seen corresponding path program 5 times [2024-06-20 16:23:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:00,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400468604] [2024-06-20 16:23:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:00,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:00,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:00,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400468604] [2024-06-20 16:23:00,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400468604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:00,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:00,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175825626] [2024-06-20 16:23:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:00,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:00,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:00,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:00,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 89 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:00,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:00,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:00,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:00,839 INFO L124 PetriNetUnfolderBase]: 281/501 cut-off events. [2024-06-20 16:23:00,839 INFO L125 PetriNetUnfolderBase]: For 10020/10024 co-relation queries the response was YES. [2024-06-20 16:23:00,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 501 events. 281/501 cut-off events. For 10020/10024 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1887 event pairs, 67 based on Foata normal form. 2/503 useless extension candidates. Maximal degree in co-relation 2865. Up to 331 conditions per place. [2024-06-20 16:23:00,843 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 44 changer transitions 0/102 dead transitions. [2024-06-20 16:23:00,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 102 transitions, 1127 flow [2024-06-20 16:23:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:00,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-20 16:23:00,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:23:00,845 INFO L175 Difference]: Start difference. First operand has 95 places, 89 transitions, 803 flow. Second operand 8 states and 92 transitions. [2024-06-20 16:23:00,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 102 transitions, 1127 flow [2024-06-20 16:23:00,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 102 transitions, 1088 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-20 16:23:00,857 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 857 flow [2024-06-20 16:23:00,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-20 16:23:00,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-20 16:23:00,858 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 857 flow [2024-06-20 16:23:00,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:00,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:00,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:00,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-20 16:23:00,858 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)] === [2024-06-20 16:23:00,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:00,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1931166, now seen corresponding path program 3 times [2024-06-20 16:23:00,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:00,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980004420] [2024-06-20 16:23:00,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:01,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:01,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980004420] [2024-06-20 16:23:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980004420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:01,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:01,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:01,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729179121] [2024-06-20 16:23:01,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:01,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:01,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:01,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:01,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:01,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:01,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 857 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:01,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:01,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:01,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:01,656 INFO L124 PetriNetUnfolderBase]: 284/506 cut-off events. [2024-06-20 16:23:01,657 INFO L125 PetriNetUnfolderBase]: For 10733/10737 co-relation queries the response was YES. [2024-06-20 16:23:01,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 506 events. 284/506 cut-off events. For 10733/10737 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1933 event pairs, 60 based on Foata normal form. 5/511 useless extension candidates. Maximal degree in co-relation 3006. Up to 444 conditions per place. [2024-06-20 16:23:01,660 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 70 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2024-06-20 16:23:01,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 101 transitions, 1151 flow [2024-06-20 16:23:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:01,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-20 16:23:01,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 16:23:01,661 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 857 flow. Second operand 8 states and 84 transitions. [2024-06-20 16:23:01,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 101 transitions, 1151 flow [2024-06-20 16:23:01,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 1065 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:01,671 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 856 flow [2024-06-20 16:23:01,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=856, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-20 16:23:01,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 72 predicate places. [2024-06-20 16:23:01,672 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 856 flow [2024-06-20 16:23:01,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:01,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:01,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-20 16:23:01,673 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)] === [2024-06-20 16:23:01,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1664039, now seen corresponding path program 6 times [2024-06-20 16:23:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:01,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123802211] [2024-06-20 16:23:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:01,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:02,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:02,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:02,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123802211] [2024-06-20 16:23:02,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123802211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:02,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:02,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:02,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883950333] [2024-06-20 16:23:02,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:02,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:02,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:02,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:02,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:02,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:02,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:02,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:02,466 INFO L124 PetriNetUnfolderBase]: 280/500 cut-off events. [2024-06-20 16:23:02,467 INFO L125 PetriNetUnfolderBase]: For 11154/11158 co-relation queries the response was YES. [2024-06-20 16:23:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2964 conditions, 500 events. 280/500 cut-off events. For 11154/11158 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1890 event pairs, 62 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2917. Up to 333 conditions per place. [2024-06-20 16:23:02,470 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 49 changer transitions 0/103 dead transitions. [2024-06-20 16:23:02,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 1140 flow [2024-06-20 16:23:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:02,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:02,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-20 16:23:02,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-20 16:23:02,472 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 856 flow. Second operand 8 states and 90 transitions. [2024-06-20 16:23:02,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 1140 flow [2024-06-20 16:23:02,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 103 transitions, 1069 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:02,483 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 888 flow [2024-06-20 16:23:02,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=888, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-06-20 16:23:02,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-20 16:23:02,484 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 888 flow [2024-06-20 16:23:02,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:02,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:02,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-20 16:23:02,484 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)] === [2024-06-20 16:23:02,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1664256, now seen corresponding path program 4 times [2024-06-20 16:23:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073160300] [2024-06-20 16:23:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:03,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073160300] [2024-06-20 16:23:03,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073160300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:03,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:03,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-20 16:23:03,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211707766] [2024-06-20 16:23:03,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:03,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-20 16:23:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-20 16:23:03,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-20 16:23:03,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:03,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:03,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:03,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:03,243 INFO L124 PetriNetUnfolderBase]: 278/497 cut-off events. [2024-06-20 16:23:03,244 INFO L125 PetriNetUnfolderBase]: For 11402/11406 co-relation queries the response was YES. [2024-06-20 16:23:03,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 497 events. 278/497 cut-off events. For 11402/11406 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1894 event pairs, 59 based on Foata normal form. 5/502 useless extension candidates. Maximal degree in co-relation 2953. Up to 436 conditions per place. [2024-06-20 16:23:03,247 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 27 changer transitions 0/100 dead transitions. [2024-06-20 16:23:03,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 100 transitions, 1110 flow [2024-06-20 16:23:03,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:03,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-20 16:23:03,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 16:23:03,248 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 888 flow. Second operand 8 states and 84 transitions. [2024-06-20 16:23:03,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 100 transitions, 1110 flow [2024-06-20 16:23:03,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 100 transitions, 984 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:03,259 INFO L231 Difference]: Finished difference. Result has 105 places, 91 transitions, 821 flow [2024-06-20 16:23:03,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=821, PETRI_PLACES=105, PETRI_TRANSITIONS=91} [2024-06-20 16:23:03,260 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-20 16:23:03,260 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 821 flow [2024-06-20 16:23:03,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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) [2024-06-20 16:23:03,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:03,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:03,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-20 16:23:03,261 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)] === [2024-06-20 16:23:03,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1941086, now seen corresponding path program 1 times [2024-06-20 16:23:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964293824] [2024-06-20 16:23:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:04,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:04,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964293824] [2024-06-20 16:23:04,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964293824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:04,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:04,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:04,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462574572] [2024-06-20 16:23:04,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:04,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:04,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:04,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:04,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:04,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:04,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:04,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:04,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:04,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:04,280 INFO L124 PetriNetUnfolderBase]: 276/493 cut-off events. [2024-06-20 16:23:04,280 INFO L125 PetriNetUnfolderBase]: For 11641/11641 co-relation queries the response was YES. [2024-06-20 16:23:04,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 493 events. 276/493 cut-off events. For 11641/11641 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1875 event pairs, 62 based on Foata normal form. 1/494 useless extension candidates. Maximal degree in co-relation 2863. Up to 467 conditions per place. [2024-06-20 16:23:04,283 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 86 selfloop transitions, 14 changer transitions 0/102 dead transitions. [2024-06-20 16:23:04,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 1055 flow [2024-06-20 16:23:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-20 16:23:04,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-20 16:23:04,284 INFO L175 Difference]: Start difference. First operand has 105 places, 91 transitions, 821 flow. Second operand 9 states and 87 transitions. [2024-06-20 16:23:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 1055 flow [2024-06-20 16:23:04,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 1006 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:04,296 INFO L231 Difference]: Finished difference. Result has 108 places, 93 transitions, 821 flow [2024-06-20 16:23:04,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=821, PETRI_PLACES=108, PETRI_TRANSITIONS=93} [2024-06-20 16:23:04,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-20 16:23:04,297 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 93 transitions, 821 flow [2024-06-20 16:23:04,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:04,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:04,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:04,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-20 16:23:04,297 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)] === [2024-06-20 16:23:04,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1493347194, now seen corresponding path program 1 times [2024-06-20 16:23:04,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:04,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127321702] [2024-06-20 16:23:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:04,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:05,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127321702] [2024-06-20 16:23:05,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127321702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:05,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:05,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:05,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122510606] [2024-06-20 16:23:05,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:05,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:05,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:05,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:05,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 93 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:05,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:05,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:05,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:05,528 INFO L124 PetriNetUnfolderBase]: 261/482 cut-off events. [2024-06-20 16:23:05,529 INFO L125 PetriNetUnfolderBase]: For 12826/12826 co-relation queries the response was YES. [2024-06-20 16:23:05,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 482 events. 261/482 cut-off events. For 12826/12826 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1918 event pairs, 33 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2847. Up to 358 conditions per place. [2024-06-20 16:23:05,532 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 76 selfloop transitions, 19 changer transitions 0/109 dead transitions. [2024-06-20 16:23:05,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 109 transitions, 1067 flow [2024-06-20 16:23:05,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:05,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-20 16:23:05,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:23:05,533 INFO L175 Difference]: Start difference. First operand has 108 places, 93 transitions, 821 flow. Second operand 8 states and 92 transitions. [2024-06-20 16:23:05,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 109 transitions, 1067 flow [2024-06-20 16:23:05,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 109 transitions, 986 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 16:23:05,546 INFO L231 Difference]: Finished difference. Result has 106 places, 94 transitions, 798 flow [2024-06-20 16:23:05,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=798, PETRI_PLACES=106, PETRI_TRANSITIONS=94} [2024-06-20 16:23:05,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-20 16:23:05,549 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 94 transitions, 798 flow [2024-06-20 16:23:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:05,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:05,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-20 16:23:05,549 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)] === [2024-06-20 16:23:05,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1493407644, now seen corresponding path program 2 times [2024-06-20 16:23:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:05,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733163933] [2024-06-20 16:23:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:05,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733163933] [2024-06-20 16:23:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733163933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504055842] [2024-06-20 16:23:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:06,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:06,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 94 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:06,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:06,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:06,877 INFO L124 PetriNetUnfolderBase]: 265/490 cut-off events. [2024-06-20 16:23:06,878 INFO L125 PetriNetUnfolderBase]: For 13837/13837 co-relation queries the response was YES. [2024-06-20 16:23:06,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 490 events. 265/490 cut-off events. For 13837/13837 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1963 event pairs, 48 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2911. Up to 364 conditions per place. [2024-06-20 16:23:06,882 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 70 selfloop transitions, 26 changer transitions 0/110 dead transitions. [2024-06-20 16:23:06,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 1050 flow [2024-06-20 16:23:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-20 16:23:06,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:23:06,883 INFO L175 Difference]: Start difference. First operand has 106 places, 94 transitions, 798 flow. Second operand 8 states and 94 transitions. [2024-06-20 16:23:06,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 1050 flow [2024-06-20 16:23:06,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 1002 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:06,899 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 827 flow [2024-06-20 16:23:06,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=827, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-06-20 16:23:06,899 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-20 16:23:06,900 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 827 flow [2024-06-20 16:23:06,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:06,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:06,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:06,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-20 16:23:06,900 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)] === [2024-06-20 16:23:06,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash -381931536, now seen corresponding path program 1 times [2024-06-20 16:23:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502302455] [2024-06-20 16:23:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:06,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:07,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502302455] [2024-06-20 16:23:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502302455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:07,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:07,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525070648] [2024-06-20 16:23:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:07,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:07,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 827 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:07,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:07,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:07,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:08,009 INFO L124 PetriNetUnfolderBase]: 282/506 cut-off events. [2024-06-20 16:23:08,009 INFO L125 PetriNetUnfolderBase]: For 14097/14097 co-relation queries the response was YES. [2024-06-20 16:23:08,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3041 conditions, 506 events. 282/506 cut-off events. For 14097/14097 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1952 event pairs, 50 based on Foata normal form. 1/507 useless extension candidates. Maximal degree in co-relation 2990. Up to 410 conditions per place. [2024-06-20 16:23:08,012 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 79 selfloop transitions, 29 changer transitions 0/110 dead transitions. [2024-06-20 16:23:08,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 110 transitions, 1089 flow [2024-06-20 16:23:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:08,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-20 16:23:08,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:23:08,013 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 827 flow. Second operand 8 states and 88 transitions. [2024-06-20 16:23:08,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 110 transitions, 1089 flow [2024-06-20 16:23:08,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 1020 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:08,027 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 826 flow [2024-06-20 16:23:08,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=826, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-20 16:23:08,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-20 16:23:08,028 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 826 flow [2024-06-20 16:23:08,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:08,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:08,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:08,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-20 16:23:08,028 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)] === [2024-06-20 16:23:08,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2064344296, now seen corresponding path program 1 times [2024-06-20 16:23:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:08,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122490819] [2024-06-20 16:23:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:08,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:08,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:08,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122490819] [2024-06-20 16:23:08,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122490819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:08,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:08,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:08,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291990021] [2024-06-20 16:23:08,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:08,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:08,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:08,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:08,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 826 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:08,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:08,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:08,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:08,919 INFO L124 PetriNetUnfolderBase]: 288/516 cut-off events. [2024-06-20 16:23:08,919 INFO L125 PetriNetUnfolderBase]: For 15357/15357 co-relation queries the response was YES. [2024-06-20 16:23:08,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 516 events. 288/516 cut-off events. For 15357/15357 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2002 event pairs, 48 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3050. Up to 425 conditions per place. [2024-06-20 16:23:08,923 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 86 selfloop transitions, 26 changer transitions 0/114 dead transitions. [2024-06-20 16:23:08,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 1122 flow [2024-06-20 16:23:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 16:23:08,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-20 16:23:08,950 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 826 flow. Second operand 9 states and 97 transitions. [2024-06-20 16:23:08,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 1122 flow [2024-06-20 16:23:08,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 1035 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:08,967 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 820 flow [2024-06-20 16:23:08,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=820, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-20 16:23:08,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-20 16:23:08,969 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 820 flow [2024-06-20 16:23:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:08,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:08,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:08,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-20 16:23:08,970 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)] === [2024-06-20 16:23:08,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1611495324, now seen corresponding path program 3 times [2024-06-20 16:23:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708364462] [2024-06-20 16:23:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:08,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:09,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:09,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708364462] [2024-06-20 16:23:09,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708364462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:09,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:09,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:09,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489555328] [2024-06-20 16:23:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:09,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:09,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:10,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:10,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 820 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:10,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:10,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:10,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:10,230 INFO L124 PetriNetUnfolderBase]: 270/502 cut-off events. [2024-06-20 16:23:10,230 INFO L125 PetriNetUnfolderBase]: For 16645/16645 co-relation queries the response was YES. [2024-06-20 16:23:10,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3099 conditions, 502 events. 270/502 cut-off events. For 16645/16645 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2019 event pairs, 49 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 3046. Up to 372 conditions per place. [2024-06-20 16:23:10,234 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 69 selfloop transitions, 28 changer transitions 0/111 dead transitions. [2024-06-20 16:23:10,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 1068 flow [2024-06-20 16:23:10,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-20 16:23:10,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-20 16:23:10,235 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 820 flow. Second operand 8 states and 94 transitions. [2024-06-20 16:23:10,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 1068 flow [2024-06-20 16:23:10,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 111 transitions, 1003 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:10,252 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 835 flow [2024-06-20 16:23:10,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=835, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2024-06-20 16:23:10,252 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-20 16:23:10,252 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 835 flow [2024-06-20 16:23:10,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:10,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:10,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:10,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-20 16:23:10,253 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)] === [2024-06-20 16:23:10,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:10,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1611500284, now seen corresponding path program 2 times [2024-06-20 16:23:10,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:10,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556712400] [2024-06-20 16:23:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:10,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:10,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:10,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556712400] [2024-06-20 16:23:10,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556712400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:10,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:10,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:10,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733051674] [2024-06-20 16:23:10,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:10,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:10,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:10,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:10,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:10,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:10,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:10,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:11,177 INFO L124 PetriNetUnfolderBase]: 313/558 cut-off events. [2024-06-20 16:23:11,177 INFO L125 PetriNetUnfolderBase]: For 19220/19220 co-relation queries the response was YES. [2024-06-20 16:23:11,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 558 events. 313/558 cut-off events. For 19220/19220 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2209 event pairs, 58 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3419. Up to 398 conditions per place. [2024-06-20 16:23:11,180 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 38 changer transitions 0/121 dead transitions. [2024-06-20 16:23:11,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 121 transitions, 1321 flow [2024-06-20 16:23:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 16:23:11,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-20 16:23:11,181 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 835 flow. Second operand 9 states and 103 transitions. [2024-06-20 16:23:11,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 121 transitions, 1321 flow [2024-06-20 16:23:11,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 1251 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:11,201 INFO L231 Difference]: Finished difference. Result has 115 places, 104 transitions, 922 flow [2024-06-20 16:23:11,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=115, PETRI_TRANSITIONS=104} [2024-06-20 16:23:11,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-20 16:23:11,202 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 104 transitions, 922 flow [2024-06-20 16:23:11,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:11,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:11,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:11,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-20 16:23:11,202 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)] === [2024-06-20 16:23:11,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash -2059702666, now seen corresponding path program 3 times [2024-06-20 16:23:11,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:11,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448578795] [2024-06-20 16:23:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:11,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448578795] [2024-06-20 16:23:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448578795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106375171] [2024-06-20 16:23:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:11,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:11,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:11,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 104 transitions, 922 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:11,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:11,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:11,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:12,094 INFO L124 PetriNetUnfolderBase]: 319/568 cut-off events. [2024-06-20 16:23:12,094 INFO L125 PetriNetUnfolderBase]: For 20476/20476 co-relation queries the response was YES. [2024-06-20 16:23:12,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 568 events. 319/568 cut-off events. For 20476/20476 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2267 event pairs, 52 based on Foata normal form. 2/570 useless extension candidates. Maximal degree in co-relation 3536. Up to 404 conditions per place. [2024-06-20 16:23:12,098 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 44 changer transitions 0/123 dead transitions. [2024-06-20 16:23:12,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 123 transitions, 1372 flow [2024-06-20 16:23:12,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-20 16:23:12,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-20 16:23:12,099 INFO L175 Difference]: Start difference. First operand has 115 places, 104 transitions, 922 flow. Second operand 9 states and 102 transitions. [2024-06-20 16:23:12,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 123 transitions, 1372 flow [2024-06-20 16:23:12,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 123 transitions, 1328 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-20 16:23:12,124 INFO L231 Difference]: Finished difference. Result has 120 places, 106 transitions, 999 flow [2024-06-20 16:23:12,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=999, PETRI_PLACES=120, PETRI_TRANSITIONS=106} [2024-06-20 16:23:12,124 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-20 16:23:12,125 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 106 transitions, 999 flow [2024-06-20 16:23:12,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:12,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:12,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-20 16:23:12,126 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)] === [2024-06-20 16:23:12,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:12,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2059696156, now seen corresponding path program 4 times [2024-06-20 16:23:12,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:12,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884767028] [2024-06-20 16:23:12,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:12,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:12,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:12,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884767028] [2024-06-20 16:23:12,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884767028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:12,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:12,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898435402] [2024-06-20 16:23:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:12,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:12,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:12,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:12,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:12,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 106 transitions, 999 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:12,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:12,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:12,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:12,954 INFO L124 PetriNetUnfolderBase]: 315/562 cut-off events. [2024-06-20 16:23:12,954 INFO L125 PetriNetUnfolderBase]: For 20570/20570 co-relation queries the response was YES. [2024-06-20 16:23:12,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 562 events. 315/562 cut-off events. For 20570/20570 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2238 event pairs, 51 based on Foata normal form. 2/564 useless extension candidates. Maximal degree in co-relation 3545. Up to 401 conditions per place. [2024-06-20 16:23:12,957 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 47 changer transitions 0/122 dead transitions. [2024-06-20 16:23:12,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 122 transitions, 1353 flow [2024-06-20 16:23:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:12,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 16:23:12,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-20 16:23:12,974 INFO L175 Difference]: Start difference. First operand has 120 places, 106 transitions, 999 flow. Second operand 9 states and 100 transitions. [2024-06-20 16:23:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 122 transitions, 1353 flow [2024-06-20 16:23:12,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1246 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:12,999 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 991 flow [2024-06-20 16:23:13,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=991, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-20 16:23:13,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-20 16:23:13,000 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 991 flow [2024-06-20 16:23:13,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:13,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:13,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:13,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-20 16:23:13,001 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)] === [2024-06-20 16:23:13,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:13,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1463532176, now seen corresponding path program 1 times [2024-06-20 16:23:13,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:13,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686285108] [2024-06-20 16:23:13,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:13,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:13,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:13,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686285108] [2024-06-20 16:23:13,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686285108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:13,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:13,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251337666] [2024-06-20 16:23:13,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:13,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:13,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:13,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:13,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 991 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:13,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:13,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:13,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:13,826 INFO L124 PetriNetUnfolderBase]: 318/567 cut-off events. [2024-06-20 16:23:13,826 INFO L125 PetriNetUnfolderBase]: For 20809/20809 co-relation queries the response was YES. [2024-06-20 16:23:13,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 567 events. 318/567 cut-off events. For 20809/20809 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2266 event pairs, 57 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3593. Up to 531 conditions per place. [2024-06-20 16:23:13,829 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 102 selfloop transitions, 16 changer transitions 0/120 dead transitions. [2024-06-20 16:23:13,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 120 transitions, 1281 flow [2024-06-20 16:23:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-20 16:23:13,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-20 16:23:13,830 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 991 flow. Second operand 9 states and 90 transitions. [2024-06-20 16:23:13,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 120 transitions, 1281 flow [2024-06-20 16:23:13,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 120 transitions, 1195 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:13,857 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 966 flow [2024-06-20 16:23:13,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=966, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-06-20 16:23:13,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-20 16:23:13,858 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 966 flow [2024-06-20 16:23:13,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:13,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:13,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:13,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-20 16:23:13,859 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)] === [2024-06-20 16:23:13,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 29837548, now seen corresponding path program 5 times [2024-06-20 16:23:13,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:13,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677482885] [2024-06-20 16:23:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:13,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:14,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:14,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677482885] [2024-06-20 16:23:14,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677482885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:14,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:14,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:14,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184308769] [2024-06-20 16:23:14,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:14,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:14,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:14,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:14,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 966 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:14,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:14,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:14,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:14,677 INFO L124 PetriNetUnfolderBase]: 334/594 cut-off events. [2024-06-20 16:23:14,677 INFO L125 PetriNetUnfolderBase]: For 23889/23893 co-relation queries the response was YES. [2024-06-20 16:23:14,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 594 events. 334/594 cut-off events. For 23889/23893 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2408 event pairs, 67 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3789. Up to 343 conditions per place. [2024-06-20 16:23:14,681 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 57 changer transitions 0/131 dead transitions. [2024-06-20 16:23:14,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 131 transitions, 1572 flow [2024-06-20 16:23:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:14,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-20 16:23:14,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-20 16:23:14,683 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 966 flow. Second operand 9 states and 107 transitions. [2024-06-20 16:23:14,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 131 transitions, 1572 flow [2024-06-20 16:23:14,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 1527 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:14,710 INFO L231 Difference]: Finished difference. Result has 127 places, 114 transitions, 1128 flow [2024-06-20 16:23:14,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1128, PETRI_PLACES=127, PETRI_TRANSITIONS=114} [2024-06-20 16:23:14,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-20 16:23:14,710 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 114 transitions, 1128 flow [2024-06-20 16:23:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:14,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:14,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-20 16:23:14,711 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)] === [2024-06-20 16:23:14,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash -176307714, now seen corresponding path program 2 times [2024-06-20 16:23:14,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:14,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146459392] [2024-06-20 16:23:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:14,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:15,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:15,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:15,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146459392] [2024-06-20 16:23:15,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146459392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:15,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:15,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:15,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449215617] [2024-06-20 16:23:15,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:15,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:15,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:15,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:15,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:15,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:15,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 114 transitions, 1128 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:15,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:15,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:15,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:15,526 INFO L124 PetriNetUnfolderBase]: 337/599 cut-off events. [2024-06-20 16:23:15,526 INFO L125 PetriNetUnfolderBase]: For 24847/24851 co-relation queries the response was YES. [2024-06-20 16:23:15,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4030 conditions, 599 events. 337/599 cut-off events. For 24847/24851 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2449 event pairs, 63 based on Foata normal form. 5/604 useless extension candidates. Maximal degree in co-relation 3970. Up to 521 conditions per place. [2024-06-20 16:23:15,530 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 97 selfloop transitions, 30 changer transitions 0/129 dead transitions. [2024-06-20 16:23:15,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 129 transitions, 1534 flow [2024-06-20 16:23:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 16:23:15,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 16:23:15,531 INFO L175 Difference]: Start difference. First operand has 127 places, 114 transitions, 1128 flow. Second operand 9 states and 96 transitions. [2024-06-20 16:23:15,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 129 transitions, 1534 flow [2024-06-20 16:23:15,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 129 transitions, 1412 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:15,558 INFO L231 Difference]: Finished difference. Result has 131 places, 118 transitions, 1123 flow [2024-06-20 16:23:15,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1123, PETRI_PLACES=131, PETRI_TRANSITIONS=118} [2024-06-20 16:23:15,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-20 16:23:15,559 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 118 transitions, 1123 flow [2024-06-20 16:23:15,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:15,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:15,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:15,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-20 16:23:15,560 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)] === [2024-06-20 16:23:15,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -176314472, now seen corresponding path program 6 times [2024-06-20 16:23:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451619327] [2024-06-20 16:23:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:16,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:16,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451619327] [2024-06-20 16:23:16,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451619327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:16,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:16,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:16,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728257929] [2024-06-20 16:23:16,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:16,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:16,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:16,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:16,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:16,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:16,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 118 transitions, 1123 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:16,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:16,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:16,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:16,465 INFO L124 PetriNetUnfolderBase]: 343/609 cut-off events. [2024-06-20 16:23:16,465 INFO L125 PetriNetUnfolderBase]: For 26485/26489 co-relation queries the response was YES. [2024-06-20 16:23:16,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 609 events. 343/609 cut-off events. For 26485/26489 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2494 event pairs, 67 based on Foata normal form. 2/611 useless extension candidates. Maximal degree in co-relation 3976. Up to 354 conditions per place. [2024-06-20 16:23:16,469 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 58 changer transitions 0/137 dead transitions. [2024-06-20 16:23:16,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 137 transitions, 1693 flow [2024-06-20 16:23:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:16,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:16,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-20 16:23:16,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:23:16,471 INFO L175 Difference]: Start difference. First operand has 131 places, 118 transitions, 1123 flow. Second operand 9 states and 108 transitions. [2024-06-20 16:23:16,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 137 transitions, 1693 flow [2024-06-20 16:23:16,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 137 transitions, 1646 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:16,501 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1221 flow [2024-06-20 16:23:16,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1221, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2024-06-20 16:23:16,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-20 16:23:16,511 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1221 flow [2024-06-20 16:23:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:16,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:16,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:16,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-20 16:23:16,512 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)] === [2024-06-20 16:23:16,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash -176492412, now seen corresponding path program 4 times [2024-06-20 16:23:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357234349] [2024-06-20 16:23:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:17,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:17,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:17,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357234349] [2024-06-20 16:23:17,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357234349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:17,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:17,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:17,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704644562] [2024-06-20 16:23:17,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:17,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:17,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-20 16:23:17,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1221 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:17,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:17,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-20 16:23:17,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:17,598 INFO L124 PetriNetUnfolderBase]: 309/569 cut-off events. [2024-06-20 16:23:17,598 INFO L125 PetriNetUnfolderBase]: For 26867/26875 co-relation queries the response was YES. [2024-06-20 16:23:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 569 events. 309/569 cut-off events. For 26867/26875 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2406 event pairs, 55 based on Foata normal form. 2/567 useless extension candidates. Maximal degree in co-relation 3890. Up to 426 conditions per place. [2024-06-20 16:23:17,626 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 85 selfloop transitions, 32 changer transitions 0/131 dead transitions. [2024-06-20 16:23:17,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 131 transitions, 1485 flow [2024-06-20 16:23:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 16:23:17,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 16:23:17,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-20 16:23:17,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-20 16:23:17,627 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1221 flow. Second operand 8 states and 93 transitions. [2024-06-20 16:23:17,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 131 transitions, 1485 flow [2024-06-20 16:23:17,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 131 transitions, 1364 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:17,671 INFO L231 Difference]: Finished difference. Result has 137 places, 120 transitions, 1168 flow [2024-06-20 16:23:17,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1168, PETRI_PLACES=137, PETRI_TRANSITIONS=120} [2024-06-20 16:23:17,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-20 16:23:17,672 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 120 transitions, 1168 flow [2024-06-20 16:23:17,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-20 16:23:17,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:17,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:17,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-20 16:23:17,672 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)] === [2024-06-20 16:23:17,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:17,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1839140140, now seen corresponding path program 7 times [2024-06-20 16:23:17,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:17,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401704743] [2024-06-20 16:23:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:17,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401704743] [2024-06-20 16:23:18,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401704743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:18,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:18,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:18,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35748505] [2024-06-20 16:23:18,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:18,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:18,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:18,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:18,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:18,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:18,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 120 transitions, 1168 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:18,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:18,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:18,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:18,566 INFO L124 PetriNetUnfolderBase]: 336/598 cut-off events. [2024-06-20 16:23:18,566 INFO L125 PetriNetUnfolderBase]: For 26042/26046 co-relation queries the response was YES. [2024-06-20 16:23:18,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3934 conditions, 598 events. 336/598 cut-off events. For 26042/26046 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2448 event pairs, 68 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 3870. Up to 346 conditions per place. [2024-06-20 16:23:18,570 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 61 changer transitions 0/135 dead transitions. [2024-06-20 16:23:18,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 135 transitions, 1636 flow [2024-06-20 16:23:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:18,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-20 16:23:18,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-20 16:23:18,572 INFO L175 Difference]: Start difference. First operand has 137 places, 120 transitions, 1168 flow. Second operand 9 states and 104 transitions. [2024-06-20 16:23:18,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 135 transitions, 1636 flow [2024-06-20 16:23:18,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 135 transitions, 1519 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:18,606 INFO L231 Difference]: Finished difference. Result has 139 places, 120 transitions, 1178 flow [2024-06-20 16:23:18,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1178, PETRI_PLACES=139, PETRI_TRANSITIONS=120} [2024-06-20 16:23:18,608 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-20 16:23:18,608 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 120 transitions, 1178 flow [2024-06-20 16:23:18,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:18,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:18,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:18,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-20 16:23:18,613 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)] === [2024-06-20 16:23:18,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:18,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1611059252, now seen corresponding path program 3 times [2024-06-20 16:23:18,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:18,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756872920] [2024-06-20 16:23:18,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:19,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:19,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756872920] [2024-06-20 16:23:19,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756872920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:19,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:19,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832417805] [2024-06-20 16:23:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:19,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:19,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 120 transitions, 1178 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:19,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:19,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:19,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:19,471 INFO L124 PetriNetUnfolderBase]: 339/603 cut-off events. [2024-06-20 16:23:19,471 INFO L125 PetriNetUnfolderBase]: For 26334/26338 co-relation queries the response was YES. [2024-06-20 16:23:19,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4003 conditions, 603 events. 339/603 cut-off events. For 26334/26338 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2489 event pairs, 63 based on Foata normal form. 5/608 useless extension candidates. Maximal degree in co-relation 3938. Up to 524 conditions per place. [2024-06-20 16:23:19,475 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 33 changer transitions 0/133 dead transitions. [2024-06-20 16:23:19,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1580 flow [2024-06-20 16:23:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-20 16:23:19,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-20 16:23:19,476 INFO L175 Difference]: Start difference. First operand has 139 places, 120 transitions, 1178 flow. Second operand 9 states and 95 transitions. [2024-06-20 16:23:19,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1580 flow [2024-06-20 16:23:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 133 transitions, 1438 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:19,511 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1135 flow [2024-06-20 16:23:19,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-06-20 16:23:19,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-20 16:23:19,512 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1135 flow [2024-06-20 16:23:19,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:19,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:19,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:19,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-20 16:23:19,512 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)] === [2024-06-20 16:23:19,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1602488372, now seen corresponding path program 4 times [2024-06-20 16:23:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078230672] [2024-06-20 16:23:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:19,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:20,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078230672] [2024-06-20 16:23:20,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078230672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:20,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:20,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:20,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771097666] [2024-06-20 16:23:20,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:20,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:20,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:20,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:20,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:20,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:20,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:20,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:20,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:20,340 INFO L124 PetriNetUnfolderBase]: 342/607 cut-off events. [2024-06-20 16:23:20,340 INFO L125 PetriNetUnfolderBase]: For 27346/27346 co-relation queries the response was YES. [2024-06-20 16:23:20,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 607 events. 342/607 cut-off events. For 27346/27346 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2493 event pairs, 67 based on Foata normal form. 1/608 useless extension candidates. Maximal degree in co-relation 3865. Up to 581 conditions per place. [2024-06-20 16:23:20,343 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 14 changer transitions 0/133 dead transitions. [2024-06-20 16:23:20,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1451 flow [2024-06-20 16:23:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:20,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-20 16:23:20,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-20 16:23:20,348 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1135 flow. Second operand 9 states and 87 transitions. [2024-06-20 16:23:20,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1451 flow [2024-06-20 16:23:20,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 133 transitions, 1359 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:20,384 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 1112 flow [2024-06-20 16:23:20,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2024-06-20 16:23:20,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-20 16:23:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 1112 flow [2024-06-20 16:23:20,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:20,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:20,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-20 16:23:20,386 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)] === [2024-06-20 16:23:20,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1602785042, now seen corresponding path program 5 times [2024-06-20 16:23:20,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:20,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809730316] [2024-06-20 16:23:20,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:20,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:21,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809730316] [2024-06-20 16:23:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809730316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474061530] [2024-06-20 16:23:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:21,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:21,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 1112 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:21,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:21,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:21,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:21,196 INFO L124 PetriNetUnfolderBase]: 340/605 cut-off events. [2024-06-20 16:23:21,196 INFO L125 PetriNetUnfolderBase]: For 27596/27600 co-relation queries the response was YES. [2024-06-20 16:23:21,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3843 conditions, 605 events. 340/605 cut-off events. For 27596/27600 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2483 event pairs, 63 based on Foata normal form. 5/610 useless extension candidates. Maximal degree in co-relation 3777. Up to 526 conditions per place. [2024-06-20 16:23:21,199 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-06-20 16:23:21,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 1404 flow [2024-06-20 16:23:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-20 16:23:21,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 16:23:21,200 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 1112 flow. Second operand 9 states and 93 transitions. [2024-06-20 16:23:21,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 1404 flow [2024-06-20 16:23:21,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 134 transitions, 1343 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:21,235 INFO L231 Difference]: Finished difference. Result has 143 places, 124 transitions, 1130 flow [2024-06-20 16:23:21,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=143, PETRI_TRANSITIONS=124} [2024-06-20 16:23:21,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-20 16:23:21,236 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 124 transitions, 1130 flow [2024-06-20 16:23:21,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:21,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:21,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:21,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-20 16:23:21,236 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:21,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:21,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1611059500, now seen corresponding path program 8 times [2024-06-20 16:23:21,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:21,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608986327] [2024-06-20 16:23:21,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:21,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608986327] [2024-06-20 16:23:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608986327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:21,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521884779] [2024-06-20 16:23:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:21,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:21,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:21,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:21,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:21,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:21,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 124 transitions, 1130 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:21,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:21,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:21,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:22,120 INFO L124 PetriNetUnfolderBase]: 356/631 cut-off events. [2024-06-20 16:23:22,121 INFO L125 PetriNetUnfolderBase]: For 31841/31845 co-relation queries the response was YES. [2024-06-20 16:23:22,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 631 events. 356/631 cut-off events. For 31841/31845 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2600 event pairs, 60 based on Foata normal form. 2/633 useless extension candidates. Maximal degree in co-relation 4032. Up to 368 conditions per place. [2024-06-20 16:23:22,125 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 68 changer transitions 0/145 dead transitions. [2024-06-20 16:23:22,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 145 transitions, 1780 flow [2024-06-20 16:23:22,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-20 16:23:22,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-20 16:23:22,126 INFO L175 Difference]: Start difference. First operand has 143 places, 124 transitions, 1130 flow. Second operand 9 states and 106 transitions. [2024-06-20 16:23:22,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 145 transitions, 1780 flow [2024-06-20 16:23:22,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 145 transitions, 1691 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:22,172 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 1234 flow [2024-06-20 16:23:22,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-06-20 16:23:22,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-20 16:23:22,173 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 1234 flow [2024-06-20 16:23:22,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:22,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:22,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:22,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-20 16:23:22,173 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:22,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:22,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1611066010, now seen corresponding path program 9 times [2024-06-20 16:23:22,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941674244] [2024-06-20 16:23:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:22,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941674244] [2024-06-20 16:23:22,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941674244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:22,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:22,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104454361] [2024-06-20 16:23:22,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:22,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:22,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:22,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:22,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 128 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:22,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:22,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:22,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:23,036 INFO L124 PetriNetUnfolderBase]: 352/625 cut-off events. [2024-06-20 16:23:23,036 INFO L125 PetriNetUnfolderBase]: For 31490/31494 co-relation queries the response was YES. [2024-06-20 16:23:23,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4106 conditions, 625 events. 352/625 cut-off events. For 31490/31494 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2591 event pairs, 60 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 4038. Up to 365 conditions per place. [2024-06-20 16:23:23,040 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 72 selfloop transitions, 69 changer transitions 0/143 dead transitions. [2024-06-20 16:23:23,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 143 transitions, 1738 flow [2024-06-20 16:23:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-20 16:23:23,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-20 16:23:23,041 INFO L175 Difference]: Start difference. First operand has 144 places, 128 transitions, 1234 flow. Second operand 9 states and 103 transitions. [2024-06-20 16:23:23,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 143 transitions, 1738 flow [2024-06-20 16:23:23,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 1572 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:23,082 INFO L231 Difference]: Finished difference. Result has 147 places, 128 transitions, 1211 flow [2024-06-20 16:23:23,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1211, PETRI_PLACES=147, PETRI_TRANSITIONS=128} [2024-06-20 16:23:23,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-20 16:23:23,083 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 1211 flow [2024-06-20 16:23:23,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:23,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:23,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:23,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-20 16:23:23,083 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:23,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1602785290, now seen corresponding path program 10 times [2024-06-20 16:23:23,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:23,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680757240] [2024-06-20 16:23:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:23,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:23,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680757240] [2024-06-20 16:23:23,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680757240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:23,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:23,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:23,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814935561] [2024-06-20 16:23:23,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:23,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:23,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:23,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:23,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:23,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:23,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:23,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:23,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:23,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:23,869 INFO L124 PetriNetUnfolderBase]: 348/619 cut-off events. [2024-06-20 16:23:23,869 INFO L125 PetriNetUnfolderBase]: For 30562/30566 co-relation queries the response was YES. [2024-06-20 16:23:23,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 619 events. 348/619 cut-off events. For 30562/30566 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2550 event pairs, 55 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 3919. Up to 362 conditions per place. [2024-06-20 16:23:23,873 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 64 selfloop transitions, 76 changer transitions 0/142 dead transitions. [2024-06-20 16:23:23,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 1623 flow [2024-06-20 16:23:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:23,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-20 16:23:23,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-20 16:23:23,874 INFO L175 Difference]: Start difference. First operand has 147 places, 128 transitions, 1211 flow. Second operand 9 states and 101 transitions. [2024-06-20 16:23:23,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 1623 flow [2024-06-20 16:23:23,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 142 transitions, 1457 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:23,923 INFO L231 Difference]: Finished difference. Result has 148 places, 128 transitions, 1202 flow [2024-06-20 16:23:23,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1202, PETRI_PLACES=148, PETRI_TRANSITIONS=128} [2024-06-20 16:23:23,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-20 16:23:23,923 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 128 transitions, 1202 flow [2024-06-20 16:23:23,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 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) [2024-06-20 16:23:23,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:23,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:23,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-20 16:23:23,924 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:23,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1602477460, now seen corresponding path program 1 times [2024-06-20 16:23:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:23,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515375415] [2024-06-20 16:23:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:23,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:24,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515375415] [2024-06-20 16:23:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515375415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:24,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:24,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514804406] [2024-06-20 16:23:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:24,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:24,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:24,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:24,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:24,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:24,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 128 transitions, 1202 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:24,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:24,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:24,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:25,040 INFO L124 PetriNetUnfolderBase]: 345/613 cut-off events. [2024-06-20 16:23:25,040 INFO L125 PetriNetUnfolderBase]: For 29480/29480 co-relation queries the response was YES. [2024-06-20 16:23:25,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 613 events. 345/613 cut-off events. For 29480/29480 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2530 event pairs, 67 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3834. Up to 581 conditions per place. [2024-06-20 16:23:25,043 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 122 selfloop transitions, 15 changer transitions 0/139 dead transitions. [2024-06-20 16:23:25,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 139 transitions, 1502 flow [2024-06-20 16:23:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:25,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-20 16:23:25,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-20 16:23:25,045 INFO L175 Difference]: Start difference. First operand has 148 places, 128 transitions, 1202 flow. Second operand 10 states and 94 transitions. [2024-06-20 16:23:25,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 139 transitions, 1502 flow [2024-06-20 16:23:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 139 transitions, 1334 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:25,093 INFO L231 Difference]: Finished difference. Result has 149 places, 128 transitions, 1068 flow [2024-06-20 16:23:25,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1068, PETRI_PLACES=149, PETRI_TRANSITIONS=128} [2024-06-20 16:23:25,094 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-20 16:23:25,094 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 128 transitions, 1068 flow [2024-06-20 16:23:25,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:25,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:25,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:25,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-20 16:23:25,095 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:25,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:25,095 INFO L85 PathProgramCache]: Analyzing trace with hash 423396756, now seen corresponding path program 1 times [2024-06-20 16:23:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:25,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821783577] [2024-06-20 16:23:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:25,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:25,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821783577] [2024-06-20 16:23:25,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821783577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:25,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:25,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:25,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689712628] [2024-06-20 16:23:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:25,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:25,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:25,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 128 transitions, 1068 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:25,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:25,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:26,178 INFO L124 PetriNetUnfolderBase]: 349/621 cut-off events. [2024-06-20 16:23:26,179 INFO L125 PetriNetUnfolderBase]: For 30314/30314 co-relation queries the response was YES. [2024-06-20 16:23:26,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 621 events. 349/621 cut-off events. For 30314/30314 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2583 event pairs, 41 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3724. Up to 524 conditions per place. [2024-06-20 16:23:26,184 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 124 selfloop transitions, 20 changer transitions 0/146 dead transitions. [2024-06-20 16:23:26,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 1414 flow [2024-06-20 16:23:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:26,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-20 16:23:26,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-20 16:23:26,187 INFO L175 Difference]: Start difference. First operand has 149 places, 128 transitions, 1068 flow. Second operand 9 states and 93 transitions. [2024-06-20 16:23:26,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 1414 flow [2024-06-20 16:23:26,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 146 transitions, 1376 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:26,238 INFO L231 Difference]: Finished difference. Result has 150 places, 129 transitions, 1088 flow [2024-06-20 16:23:26,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1088, PETRI_PLACES=150, PETRI_TRANSITIONS=129} [2024-06-20 16:23:26,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-20 16:23:26,239 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 129 transitions, 1088 flow [2024-06-20 16:23:26,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:26,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:26,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:26,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-20 16:23:26,240 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:26,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1045021866, now seen corresponding path program 2 times [2024-06-20 16:23:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248494801] [2024-06-20 16:23:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248494801] [2024-06-20 16:23:27,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248494801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:27,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:27,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:27,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905982241] [2024-06-20 16:23:27,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:27,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:27,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:27,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:27,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 129 transitions, 1088 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:27,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:27,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:27,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:27,271 INFO L124 PetriNetUnfolderBase]: 360/642 cut-off events. [2024-06-20 16:23:27,272 INFO L125 PetriNetUnfolderBase]: For 34084/34084 co-relation queries the response was YES. [2024-06-20 16:23:27,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4035 conditions, 642 events. 360/642 cut-off events. For 34084/34084 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2735 event pairs, 57 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3963. Up to 515 conditions per place. [2024-06-20 16:23:27,275 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 119 selfloop transitions, 28 changer transitions 0/149 dead transitions. [2024-06-20 16:23:27,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 149 transitions, 1558 flow [2024-06-20 16:23:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 16:23:27,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-20 16:23:27,276 INFO L175 Difference]: Start difference. First operand has 150 places, 129 transitions, 1088 flow. Second operand 9 states and 98 transitions. [2024-06-20 16:23:27,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 149 transitions, 1558 flow [2024-06-20 16:23:27,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 149 transitions, 1510 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:27,332 INFO L231 Difference]: Finished difference. Result has 152 places, 131 transitions, 1130 flow [2024-06-20 16:23:27,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=152, PETRI_TRANSITIONS=131} [2024-06-20 16:23:27,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-20 16:23:27,332 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 131 transitions, 1130 flow [2024-06-20 16:23:27,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:27,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:27,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:27,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-20 16:23:27,333 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:27,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:27,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025741, now seen corresponding path program 1 times [2024-06-20 16:23:27,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:27,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558263961] [2024-06-20 16:23:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:27,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:28,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:28,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558263961] [2024-06-20 16:23:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558263961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:28,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:28,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874976622] [2024-06-20 16:23:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:28,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:28,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:28,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 131 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:28,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:28,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:28,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:28,370 INFO L124 PetriNetUnfolderBase]: 358/639 cut-off events. [2024-06-20 16:23:28,371 INFO L125 PetriNetUnfolderBase]: For 33318/33318 co-relation queries the response was YES. [2024-06-20 16:23:28,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 639 events. 358/639 cut-off events. For 33318/33318 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2701 event pairs, 56 based on Foata normal form. 1/640 useless extension candidates. Maximal degree in co-relation 3937. Up to 532 conditions per place. [2024-06-20 16:23:28,374 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 33 changer transitions 0/148 dead transitions. [2024-06-20 16:23:28,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 148 transitions, 1474 flow [2024-06-20 16:23:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 16:23:28,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-20 16:23:28,375 INFO L175 Difference]: Start difference. First operand has 152 places, 131 transitions, 1130 flow. Second operand 9 states and 97 transitions. [2024-06-20 16:23:28,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 148 transitions, 1474 flow [2024-06-20 16:23:28,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1415 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:28,452 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1145 flow [2024-06-20 16:23:28,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1145, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-06-20 16:23:28,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-20 16:23:28,452 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1145 flow [2024-06-20 16:23:28,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:28,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:28,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-20 16:23:28,453 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:28,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1045025586, now seen corresponding path program 3 times [2024-06-20 16:23:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:28,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329826907] [2024-06-20 16:23:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:28,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:29,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329826907] [2024-06-20 16:23:29,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329826907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:29,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:29,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:29,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579743086] [2024-06-20 16:23:29,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:29,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:29,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:29,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1145 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:29,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:29,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:29,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:29,609 INFO L124 PetriNetUnfolderBase]: 355/634 cut-off events. [2024-06-20 16:23:29,609 INFO L125 PetriNetUnfolderBase]: For 33162/33162 co-relation queries the response was YES. [2024-06-20 16:23:29,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 634 events. 355/634 cut-off events. For 33162/33162 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2655 event pairs, 55 based on Foata normal form. 2/636 useless extension candidates. Maximal degree in co-relation 3863. Up to 530 conditions per place. [2024-06-20 16:23:29,613 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 116 selfloop transitions, 30 changer transitions 0/148 dead transitions. [2024-06-20 16:23:29,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 148 transitions, 1487 flow [2024-06-20 16:23:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-20 16:23:29,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-20 16:23:29,614 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1145 flow. Second operand 9 states and 96 transitions. [2024-06-20 16:23:29,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 148 transitions, 1487 flow [2024-06-20 16:23:29,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 148 transitions, 1360 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-20 16:23:29,682 INFO L231 Difference]: Finished difference. Result has 155 places, 131 transitions, 1083 flow [2024-06-20 16:23:29,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1083, PETRI_PLACES=155, PETRI_TRANSITIONS=131} [2024-06-20 16:23:29,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-20 16:23:29,682 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 131 transitions, 1083 flow [2024-06-20 16:23:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:29,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:29,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:29,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-20 16:23:29,683 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:29,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash 427211988, now seen corresponding path program 1 times [2024-06-20 16:23:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826288760] [2024-06-20 16:23:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:30,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826288760] [2024-06-20 16:23:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826288760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:30,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:30,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598387944] [2024-06-20 16:23:30,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:30,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:30,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:30,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:30,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 131 transitions, 1083 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:30,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:30,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:30,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:30,630 INFO L124 PetriNetUnfolderBase]: 361/644 cut-off events. [2024-06-20 16:23:30,642 INFO L125 PetriNetUnfolderBase]: For 34371/34371 co-relation queries the response was YES. [2024-06-20 16:23:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 644 events. 361/644 cut-off events. For 34371/34371 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2717 event pairs, 53 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 3868. Up to 545 conditions per place. [2024-06-20 16:23:30,646 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 122 selfloop transitions, 28 changer transitions 0/152 dead transitions. [2024-06-20 16:23:30,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 152 transitions, 1465 flow [2024-06-20 16:23:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:30,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 16:23:30,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-20 16:23:30,647 INFO L175 Difference]: Start difference. First operand has 155 places, 131 transitions, 1083 flow. Second operand 10 states and 106 transitions. [2024-06-20 16:23:30,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 152 transitions, 1465 flow [2024-06-20 16:23:30,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 152 transitions, 1400 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:30,724 INFO L231 Difference]: Finished difference. Result has 157 places, 133 transitions, 1107 flow [2024-06-20 16:23:30,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1107, PETRI_PLACES=157, PETRI_TRANSITIONS=133} [2024-06-20 16:23:30,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-20 16:23:30,724 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 133 transitions, 1107 flow [2024-06-20 16:23:30,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:30,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:30,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-20 16:23:30,725 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:30,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:30,725 INFO L85 PathProgramCache]: Analyzing trace with hash 410920520, now seen corresponding path program 4 times [2024-06-20 16:23:30,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:30,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301717629] [2024-06-20 16:23:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:30,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:31,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:31,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301717629] [2024-06-20 16:23:31,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301717629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:31,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:31,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:31,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75212961] [2024-06-20 16:23:31,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:31,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:31,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:31,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:31,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 133 transitions, 1107 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-06-20 16:23:31,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:31,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:31,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:31,799 INFO L124 PetriNetUnfolderBase]: 365/652 cut-off events. [2024-06-20 16:23:31,800 INFO L125 PetriNetUnfolderBase]: For 35696/35696 co-relation queries the response was YES. [2024-06-20 16:23:31,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 652 events. 365/652 cut-off events. For 35696/35696 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2782 event pairs, 56 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 3964. Up to 522 conditions per place. [2024-06-20 16:23:31,805 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 114 selfloop transitions, 33 changer transitions 0/149 dead transitions. [2024-06-20 16:23:31,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1459 flow [2024-06-20 16:23:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:31,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 16:23:31,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-20 16:23:31,820 INFO L175 Difference]: Start difference. First operand has 157 places, 133 transitions, 1107 flow. Second operand 9 states and 98 transitions. [2024-06-20 16:23:31,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1459 flow [2024-06-20 16:23:31,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1386 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:31,907 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1122 flow [2024-06-20 16:23:31,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1122, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2024-06-20 16:23:31,907 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-20 16:23:31,908 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1122 flow [2024-06-20 16:23:31,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-06-20 16:23:31,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:31,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:31,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-20 16:23:31,908 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:31,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:31,909 INFO L85 PathProgramCache]: Analyzing trace with hash 410926472, now seen corresponding path program 2 times [2024-06-20 16:23:31,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:31,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006263664] [2024-06-20 16:23:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:31,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:32,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006263664] [2024-06-20 16:23:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006263664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:32,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:32,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:32,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481976560] [2024-06-20 16:23:32,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:32,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:32,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:32,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:32,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1122 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:32,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:32,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:32,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:32,842 INFO L124 PetriNetUnfolderBase]: 411/726 cut-off events. [2024-06-20 16:23:32,843 INFO L125 PetriNetUnfolderBase]: For 48692/48692 co-relation queries the response was YES. [2024-06-20 16:23:32,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4847 conditions, 726 events. 411/726 cut-off events. For 48692/48692 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3154 event pairs, 69 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4769. Up to 488 conditions per place. [2024-06-20 16:23:32,847 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 115 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-20 16:23:32,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 162 transitions, 1824 flow [2024-06-20 16:23:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-20 16:23:32,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-20 16:23:32,848 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1122 flow. Second operand 10 states and 116 transitions. [2024-06-20 16:23:32,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 162 transitions, 1824 flow [2024-06-20 16:23:32,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 1746 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:32,949 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 1290 flow [2024-06-20 16:23:32,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2024-06-20 16:23:32,949 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-20 16:23:32,949 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 1290 flow [2024-06-20 16:23:32,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:32,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:32,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:32,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-20 16:23:32,950 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:32,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash 410772650, now seen corresponding path program 5 times [2024-06-20 16:23:32,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:32,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682296712] [2024-06-20 16:23:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:32,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682296712] [2024-06-20 16:23:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682296712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:33,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:33,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078516940] [2024-06-20 16:23:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:33,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:33,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:33,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 142 transitions, 1290 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:33,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:33,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:33,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:34,062 INFO L124 PetriNetUnfolderBase]: 422/747 cut-off events. [2024-06-20 16:23:34,063 INFO L125 PetriNetUnfolderBase]: For 53954/53954 co-relation queries the response was YES. [2024-06-20 16:23:34,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5279 conditions, 747 events. 422/747 cut-off events. For 53954/53954 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3286 event pairs, 65 based on Foata normal form. 2/749 useless extension candidates. Maximal degree in co-relation 5198. Up to 594 conditions per place. [2024-06-20 16:23:34,068 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 123 selfloop transitions, 35 changer transitions 0/160 dead transitions. [2024-06-20 16:23:34,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 1794 flow [2024-06-20 16:23:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 16:23:34,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:23:34,069 INFO L175 Difference]: Start difference. First operand has 163 places, 142 transitions, 1290 flow. Second operand 9 states and 99 transitions. [2024-06-20 16:23:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 1794 flow [2024-06-20 16:23:34,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 160 transitions, 1745 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:34,173 INFO L231 Difference]: Finished difference. Result has 167 places, 144 transitions, 1353 flow [2024-06-20 16:23:34,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1353, PETRI_PLACES=167, PETRI_TRANSITIONS=144} [2024-06-20 16:23:34,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-20 16:23:34,174 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 144 transitions, 1353 flow [2024-06-20 16:23:34,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:34,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:34,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:34,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-20 16:23:34,174 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:34,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash 416282900, now seen corresponding path program 6 times [2024-06-20 16:23:34,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:34,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60105402] [2024-06-20 16:23:34,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:34,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:35,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60105402] [2024-06-20 16:23:35,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60105402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:35,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:35,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-20 16:23:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971394614] [2024-06-20 16:23:35,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:35,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-20 16:23:35,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:35,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-20 16:23:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-20 16:23:35,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:35,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 144 transitions, 1353 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-06-20 16:23:35,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:35,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:35,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:35,333 INFO L124 PetriNetUnfolderBase]: 419/742 cut-off events. [2024-06-20 16:23:35,333 INFO L125 PetriNetUnfolderBase]: For 52789/52789 co-relation queries the response was YES. [2024-06-20 16:23:35,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5223 conditions, 742 events. 419/742 cut-off events. For 52789/52789 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3256 event pairs, 65 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 5140. Up to 612 conditions per place. [2024-06-20 16:23:35,338 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 120 selfloop transitions, 37 changer transitions 0/159 dead transitions. [2024-06-20 16:23:35,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 159 transitions, 1709 flow [2024-06-20 16:23:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:35,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 16:23:35,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-20 16:23:35,339 INFO L175 Difference]: Start difference. First operand has 167 places, 144 transitions, 1353 flow. Second operand 9 states and 97 transitions. [2024-06-20 16:23:35,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 159 transitions, 1709 flow [2024-06-20 16:23:35,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 159 transitions, 1636 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:35,442 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 1358 flow [2024-06-20 16:23:35,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1358, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2024-06-20 16:23:35,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-20 16:23:35,443 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 1358 flow [2024-06-20 16:23:35,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 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) [2024-06-20 16:23:35,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:35,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:35,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-20 16:23:35,444 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:35,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1577734868, now seen corresponding path program 3 times [2024-06-20 16:23:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:35,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028793606] [2024-06-20 16:23:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:35,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:36,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:36,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028793606] [2024-06-20 16:23:36,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028793606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:36,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:36,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:36,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18330883] [2024-06-20 16:23:36,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:36,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:36,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:36,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:36,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:36,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:36,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 1358 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:36,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:36,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:36,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:36,333 INFO L124 PetriNetUnfolderBase]: 425/752 cut-off events. [2024-06-20 16:23:36,334 INFO L125 PetriNetUnfolderBase]: For 54655/54655 co-relation queries the response was YES. [2024-06-20 16:23:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5329 conditions, 752 events. 425/752 cut-off events. For 54655/54655 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3328 event pairs, 55 based on Foata normal form. 2/754 useless extension candidates. Maximal degree in co-relation 5244. Up to 506 conditions per place. [2024-06-20 16:23:36,339 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 50 changer transitions 0/166 dead transitions. [2024-06-20 16:23:36,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 166 transitions, 2015 flow [2024-06-20 16:23:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-20 16:23:36,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-20 16:23:36,341 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 1358 flow. Second operand 10 states and 115 transitions. [2024-06-20 16:23:36,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 166 transitions, 2015 flow [2024-06-20 16:23:36,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 166 transitions, 1935 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:36,448 INFO L231 Difference]: Finished difference. Result has 173 places, 146 transitions, 1416 flow [2024-06-20 16:23:36,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1416, PETRI_PLACES=173, PETRI_TRANSITIONS=146} [2024-06-20 16:23:36,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-20 16:23:36,449 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 146 transitions, 1416 flow [2024-06-20 16:23:36,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:36,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:36,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:36,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-20 16:23:36,449 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:36,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1577525339, now seen corresponding path program 1 times [2024-06-20 16:23:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:36,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189906030] [2024-06-20 16:23:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189906030] [2024-06-20 16:23:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189906030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:37,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:37,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821867412] [2024-06-20 16:23:37,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:37,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:37,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:37,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:37,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 146 transitions, 1416 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:37,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:37,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:37,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:37,562 INFO L124 PetriNetUnfolderBase]: 421/747 cut-off events. [2024-06-20 16:23:37,562 INFO L125 PetriNetUnfolderBase]: For 53287/53287 co-relation queries the response was YES. [2024-06-20 16:23:37,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5207 conditions, 747 events. 421/747 cut-off events. For 53287/53287 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3297 event pairs, 57 based on Foata normal form. 3/750 useless extension candidates. Maximal degree in co-relation 5121. Up to 514 conditions per place. [2024-06-20 16:23:37,567 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 105 selfloop transitions, 60 changer transitions 0/167 dead transitions. [2024-06-20 16:23:37,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 167 transitions, 1974 flow [2024-06-20 16:23:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:37,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 16:23:37,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 16:23:37,568 INFO L175 Difference]: Start difference. First operand has 173 places, 146 transitions, 1416 flow. Second operand 10 states and 111 transitions. [2024-06-20 16:23:37,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 167 transitions, 1974 flow [2024-06-20 16:23:37,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 167 transitions, 1869 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:37,694 INFO L231 Difference]: Finished difference. Result has 177 places, 149 transitions, 1523 flow [2024-06-20 16:23:37,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1523, PETRI_PLACES=177, PETRI_TRANSITIONS=149} [2024-06-20 16:23:37,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-20 16:23:37,695 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 149 transitions, 1523 flow [2024-06-20 16:23:37,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:37,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:37,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:37,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-20 16:23:37,696 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:37,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:37,696 INFO L85 PathProgramCache]: Analyzing trace with hash 416498102, now seen corresponding path program 4 times [2024-06-20 16:23:37,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:37,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777215264] [2024-06-20 16:23:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:37,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:38,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:38,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777215264] [2024-06-20 16:23:38,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777215264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:38,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:38,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208286171] [2024-06-20 16:23:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:38,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:38,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:38,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 149 transitions, 1523 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:38,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:38,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:38,564 INFO L124 PetriNetUnfolderBase]: 423/751 cut-off events. [2024-06-20 16:23:38,564 INFO L125 PetriNetUnfolderBase]: For 53451/53451 co-relation queries the response was YES. [2024-06-20 16:23:38,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5258 conditions, 751 events. 423/751 cut-off events. For 53451/53451 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3325 event pairs, 55 based on Foata normal form. 4/755 useless extension candidates. Maximal degree in co-relation 5170. Up to 504 conditions per place. [2024-06-20 16:23:38,570 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 108 selfloop transitions, 59 changer transitions 0/169 dead transitions. [2024-06-20 16:23:38,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 169 transitions, 2068 flow [2024-06-20 16:23:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 16:23:38,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-20 16:23:38,571 INFO L175 Difference]: Start difference. First operand has 177 places, 149 transitions, 1523 flow. Second operand 10 states and 112 transitions. [2024-06-20 16:23:38,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 169 transitions, 2068 flow [2024-06-20 16:23:38,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 169 transitions, 1925 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:38,697 INFO L231 Difference]: Finished difference. Result has 180 places, 151 transitions, 1549 flow [2024-06-20 16:23:38,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1549, PETRI_PLACES=180, PETRI_TRANSITIONS=151} [2024-06-20 16:23:38,698 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-20 16:23:38,698 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 151 transitions, 1549 flow [2024-06-20 16:23:38,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:38,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:38,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:38,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-20 16:23:38,699 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:38,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:38,699 INFO L85 PathProgramCache]: Analyzing trace with hash 416490662, now seen corresponding path program 5 times [2024-06-20 16:23:38,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:38,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423817176] [2024-06-20 16:23:38,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:39,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423817176] [2024-06-20 16:23:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423817176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:39,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:39,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:39,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951180667] [2024-06-20 16:23:39,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:39,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:39,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:39,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:39,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:39,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:39,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 151 transitions, 1549 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:39,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:39,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:39,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:39,564 INFO L124 PetriNetUnfolderBase]: 418/743 cut-off events. [2024-06-20 16:23:39,564 INFO L125 PetriNetUnfolderBase]: For 48251/48251 co-relation queries the response was YES. [2024-06-20 16:23:39,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 743 events. 418/743 cut-off events. For 48251/48251 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3275 event pairs, 56 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 5010. Up to 502 conditions per place. [2024-06-20 16:23:39,569 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 111 selfloop transitions, 56 changer transitions 0/169 dead transitions. [2024-06-20 16:23:39,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 2055 flow [2024-06-20 16:23:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 16:23:39,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 16:23:39,570 INFO L175 Difference]: Start difference. First operand has 180 places, 151 transitions, 1549 flow. Second operand 10 states and 113 transitions. [2024-06-20 16:23:39,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 2055 flow [2024-06-20 16:23:39,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 169 transitions, 1905 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:39,700 INFO L231 Difference]: Finished difference. Result has 183 places, 151 transitions, 1516 flow [2024-06-20 16:23:39,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1399, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1516, PETRI_PLACES=183, PETRI_TRANSITIONS=151} [2024-06-20 16:23:39,701 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-20 16:23:39,701 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 151 transitions, 1516 flow [2024-06-20 16:23:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:39,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:39,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:39,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-20 16:23:39,701 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:39,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:39,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570586, now seen corresponding path program 6 times [2024-06-20 16:23:39,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:39,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433261183] [2024-06-20 16:23:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433261183] [2024-06-20 16:23:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433261183] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:40,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:40,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560328630] [2024-06-20 16:23:40,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:40,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:40,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:40,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 151 transitions, 1516 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:40,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:40,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:40,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:40,719 INFO L124 PetriNetUnfolderBase]: 457/808 cut-off events. [2024-06-20 16:23:40,719 INFO L125 PetriNetUnfolderBase]: For 62541/62545 co-relation queries the response was YES. [2024-06-20 16:23:40,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5754 conditions, 808 events. 457/808 cut-off events. For 62541/62545 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3616 event pairs, 79 based on Foata normal form. 4/812 useless extension candidates. Maximal degree in co-relation 5664. Up to 348 conditions per place. [2024-06-20 16:23:40,725 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 107 selfloop transitions, 72 changer transitions 0/181 dead transitions. [2024-06-20 16:23:40,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 181 transitions, 2464 flow [2024-06-20 16:23:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-20 16:23:40,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-20 16:23:40,726 INFO L175 Difference]: Start difference. First operand has 183 places, 151 transitions, 1516 flow. Second operand 10 states and 123 transitions. [2024-06-20 16:23:40,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 181 transitions, 2464 flow [2024-06-20 16:23:40,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 181 transitions, 2360 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:40,860 INFO L231 Difference]: Finished difference. Result has 186 places, 159 transitions, 1696 flow [2024-06-20 16:23:40,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1696, PETRI_PLACES=186, PETRI_TRANSITIONS=159} [2024-06-20 16:23:40,861 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-20 16:23:40,862 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 159 transitions, 1696 flow [2024-06-20 16:23:40,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:40,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:40,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-20 16:23:40,862 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:40,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:40,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1256344239, now seen corresponding path program 2 times [2024-06-20 16:23:40,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740950190] [2024-06-20 16:23:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:41,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:41,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740950190] [2024-06-20 16:23:41,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740950190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:41,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:41,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:41,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340061751] [2024-06-20 16:23:41,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:41,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:41,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:41,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:41,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:41,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:41,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 159 transitions, 1696 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:41,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:41,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:41,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:41,905 INFO L124 PetriNetUnfolderBase]: 451/799 cut-off events. [2024-06-20 16:23:41,906 INFO L125 PetriNetUnfolderBase]: For 57323/57327 co-relation queries the response was YES. [2024-06-20 16:23:41,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 799 events. 451/799 cut-off events. For 57323/57327 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3588 event pairs, 74 based on Foata normal form. 3/802 useless extension candidates. Maximal degree in co-relation 5598. Up to 415 conditions per place. [2024-06-20 16:23:41,911 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 103 selfloop transitions, 78 changer transitions 0/183 dead transitions. [2024-06-20 16:23:41,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 183 transitions, 2588 flow [2024-06-20 16:23:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:23:41,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:23:41,913 INFO L175 Difference]: Start difference. First operand has 186 places, 159 transitions, 1696 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:23:41,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 183 transitions, 2588 flow [2024-06-20 16:23:42,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 183 transitions, 2404 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:42,052 INFO L231 Difference]: Finished difference. Result has 192 places, 164 transitions, 1811 flow [2024-06-20 16:23:42,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=192, PETRI_TRANSITIONS=164} [2024-06-20 16:23:42,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 162 predicate places. [2024-06-20 16:23:42,052 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 164 transitions, 1811 flow [2024-06-20 16:23:42,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:42,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:42,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:42,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-20 16:23:42,053 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:42,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1853265062, now seen corresponding path program 7 times [2024-06-20 16:23:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:42,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670910464] [2024-06-20 16:23:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:42,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:42,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670910464] [2024-06-20 16:23:42,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670910464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:42,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:42,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:42,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368897681] [2024-06-20 16:23:42,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:42,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:42,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:42,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 164 transitions, 1811 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:42,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:42,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:42,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:42,873 INFO L124 PetriNetUnfolderBase]: 492/865 cut-off events. [2024-06-20 16:23:42,873 INFO L125 PetriNetUnfolderBase]: For 71145/71149 co-relation queries the response was YES. [2024-06-20 16:23:42,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6618 conditions, 865 events. 492/865 cut-off events. For 71145/71149 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3922 event pairs, 62 based on Foata normal form. 2/867 useless extension candidates. Maximal degree in co-relation 6523. Up to 370 conditions per place. [2024-06-20 16:23:42,880 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 97 selfloop transitions, 94 changer transitions 0/193 dead transitions. [2024-06-20 16:23:42,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 193 transitions, 2817 flow [2024-06-20 16:23:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-20 16:23:42,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:23:42,881 INFO L175 Difference]: Start difference. First operand has 192 places, 164 transitions, 1811 flow. Second operand 10 states and 120 transitions. [2024-06-20 16:23:42,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 193 transitions, 2817 flow [2024-06-20 16:23:43,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 193 transitions, 2700 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:43,038 INFO L231 Difference]: Finished difference. Result has 198 places, 173 transitions, 2070 flow [2024-06-20 16:23:43,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2070, PETRI_PLACES=198, PETRI_TRANSITIONS=173} [2024-06-20 16:23:43,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-20 16:23:43,039 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 173 transitions, 2070 flow [2024-06-20 16:23:43,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:43,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:43,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:43,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-20 16:23:43,039 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:43,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1853272502, now seen corresponding path program 8 times [2024-06-20 16:23:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:43,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135440245] [2024-06-20 16:23:43,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:43,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135440245] [2024-06-20 16:23:43,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135440245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:43,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:43,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850265314] [2024-06-20 16:23:43,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:43,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:43,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:43,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:43,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:43,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 173 transitions, 2070 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:43,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:43,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:43,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:43,935 INFO L124 PetriNetUnfolderBase]: 521/913 cut-off events. [2024-06-20 16:23:43,936 INFO L125 PetriNetUnfolderBase]: For 83322/83326 co-relation queries the response was YES. [2024-06-20 16:23:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7356 conditions, 913 events. 521/913 cut-off events. For 83322/83326 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4182 event pairs, 74 based on Foata normal form. 4/917 useless extension candidates. Maximal degree in co-relation 7258. Up to 393 conditions per place. [2024-06-20 16:23:43,943 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 101 selfloop transitions, 97 changer transitions 0/200 dead transitions. [2024-06-20 16:23:43,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 200 transitions, 3068 flow [2024-06-20 16:23:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:43,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:23:43,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:23:43,944 INFO L175 Difference]: Start difference. First operand has 198 places, 173 transitions, 2070 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:23:43,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 200 transitions, 3068 flow [2024-06-20 16:23:44,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 200 transitions, 2883 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-20 16:23:44,113 INFO L231 Difference]: Finished difference. Result has 204 places, 180 transitions, 2237 flow [2024-06-20 16:23:44,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2237, PETRI_PLACES=204, PETRI_TRANSITIONS=180} [2024-06-20 16:23:44,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-20 16:23:44,114 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 180 transitions, 2237 flow [2024-06-20 16:23:44,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:44,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:44,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:44,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-20 16:23:44,114 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:44,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:44,115 INFO L85 PathProgramCache]: Analyzing trace with hash -737687200, now seen corresponding path program 9 times [2024-06-20 16:23:44,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:44,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889931580] [2024-06-20 16:23:44,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:44,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889931580] [2024-06-20 16:23:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889931580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:44,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763207641] [2024-06-20 16:23:44,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:44,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:44,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:44,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:44,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 180 transitions, 2237 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:44,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:44,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:44,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:45,117 INFO L124 PetriNetUnfolderBase]: 527/923 cut-off events. [2024-06-20 16:23:45,117 INFO L125 PetriNetUnfolderBase]: For 82562/82566 co-relation queries the response was YES. [2024-06-20 16:23:45,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7477 conditions, 923 events. 527/923 cut-off events. For 82562/82566 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4219 event pairs, 92 based on Foata normal form. 2/925 useless extension candidates. Maximal degree in co-relation 7377. Up to 395 conditions per place. [2024-06-20 16:23:45,125 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 114 selfloop transitions, 86 changer transitions 0/202 dead transitions. [2024-06-20 16:23:45,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 202 transitions, 3148 flow [2024-06-20 16:23:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:45,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 16:23:45,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:23:45,131 INFO L175 Difference]: Start difference. First operand has 204 places, 180 transitions, 2237 flow. Second operand 10 states and 124 transitions. [2024-06-20 16:23:45,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 202 transitions, 3148 flow [2024-06-20 16:23:45,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 202 transitions, 2933 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:45,326 INFO L231 Difference]: Finished difference. Result has 208 places, 182 transitions, 2242 flow [2024-06-20 16:23:45,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2242, PETRI_PLACES=208, PETRI_TRANSITIONS=182} [2024-06-20 16:23:45,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-20 16:23:45,327 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 182 transitions, 2242 flow [2024-06-20 16:23:45,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:45,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:45,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:45,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-20 16:23:45,328 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:45,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1596764552, now seen corresponding path program 10 times [2024-06-20 16:23:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:45,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510274343] [2024-06-20 16:23:45,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:45,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:45,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510274343] [2024-06-20 16:23:45,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510274343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:45,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:45,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:45,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180527912] [2024-06-20 16:23:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:45,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:46,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:46,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 182 transitions, 2242 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:46,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:46,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:46,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:46,274 INFO L124 PetriNetUnfolderBase]: 553/965 cut-off events. [2024-06-20 16:23:46,274 INFO L125 PetriNetUnfolderBase]: For 94015/94019 co-relation queries the response was YES. [2024-06-20 16:23:46,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7992 conditions, 965 events. 553/965 cut-off events. For 94015/94019 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4490 event pairs, 81 based on Foata normal form. 2/967 useless extension candidates. Maximal degree in co-relation 7891. Up to 409 conditions per place. [2024-06-20 16:23:46,282 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 112 selfloop transitions, 95 changer transitions 0/209 dead transitions. [2024-06-20 16:23:46,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 209 transitions, 3384 flow [2024-06-20 16:23:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-20 16:23:46,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-20 16:23:46,283 INFO L175 Difference]: Start difference. First operand has 208 places, 182 transitions, 2242 flow. Second operand 10 states and 124 transitions. [2024-06-20 16:23:46,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 209 transitions, 3384 flow [2024-06-20 16:23:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 209 transitions, 3196 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:46,491 INFO L231 Difference]: Finished difference. Result has 212 places, 189 transitions, 2408 flow [2024-06-20 16:23:46,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2408, PETRI_PLACES=212, PETRI_TRANSITIONS=189} [2024-06-20 16:23:46,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-20 16:23:46,492 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 189 transitions, 2408 flow [2024-06-20 16:23:46,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:46,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:46,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:46,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-20 16:23:46,493 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:46,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash -737894962, now seen corresponding path program 7 times [2024-06-20 16:23:46,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:46,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664348376] [2024-06-20 16:23:46,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:46,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:47,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:47,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:47,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664348376] [2024-06-20 16:23:47,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664348376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:47,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:47,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:47,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094644477] [2024-06-20 16:23:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:47,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:47,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:47,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:47,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 189 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:47,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:47,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:47,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:47,746 INFO L124 PetriNetUnfolderBase]: 557/973 cut-off events. [2024-06-20 16:23:47,747 INFO L125 PetriNetUnfolderBase]: For 97118/97122 co-relation queries the response was YES. [2024-06-20 16:23:47,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8131 conditions, 973 events. 557/973 cut-off events. For 97118/97122 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4533 event pairs, 80 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 8028. Up to 801 conditions per place. [2024-06-20 16:23:47,753 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 158 selfloop transitions, 44 changer transitions 0/204 dead transitions. [2024-06-20 16:23:47,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 204 transitions, 2872 flow [2024-06-20 16:23:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-20 16:23:47,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-20 16:23:47,764 INFO L175 Difference]: Start difference. First operand has 212 places, 189 transitions, 2408 flow. Second operand 9 states and 100 transitions. [2024-06-20 16:23:47,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 204 transitions, 2872 flow [2024-06-20 16:23:47,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 204 transitions, 2584 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:47,950 INFO L231 Difference]: Finished difference. Result has 213 places, 190 transitions, 2234 flow [2024-06-20 16:23:47,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2234, PETRI_PLACES=213, PETRI_TRANSITIONS=190} [2024-06-20 16:23:47,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-20 16:23:47,950 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 190 transitions, 2234 flow [2024-06-20 16:23:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:47,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:47,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:47,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-20 16:23:47,951 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:47,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1176292318, now seen corresponding path program 8 times [2024-06-20 16:23:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738172258] [2024-06-20 16:23:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:48,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:48,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738172258] [2024-06-20 16:23:48,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738172258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:48,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:48,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431761345] [2024-06-20 16:23:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:48,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:48,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:48,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:48,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:48,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:48,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 190 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:48,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:48,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:48,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:49,157 INFO L124 PetriNetUnfolderBase]: 561/981 cut-off events. [2024-06-20 16:23:49,157 INFO L125 PetriNetUnfolderBase]: For 98583/98587 co-relation queries the response was YES. [2024-06-20 16:23:49,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7983 conditions, 981 events. 561/981 cut-off events. For 98583/98587 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4614 event pairs, 83 based on Foata normal form. 2/983 useless extension candidates. Maximal degree in co-relation 7879. Up to 809 conditions per place. [2024-06-20 16:23:49,166 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 157 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-06-20 16:23:49,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 204 transitions, 2696 flow [2024-06-20 16:23:49,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-20 16:23:49,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-20 16:23:49,167 INFO L175 Difference]: Start difference. First operand has 213 places, 190 transitions, 2234 flow. Second operand 9 states and 98 transitions. [2024-06-20 16:23:49,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 204 transitions, 2696 flow [2024-06-20 16:23:49,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 204 transitions, 2592 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:49,388 INFO L231 Difference]: Finished difference. Result has 215 places, 191 transitions, 2248 flow [2024-06-20 16:23:49,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2248, PETRI_PLACES=215, PETRI_TRANSITIONS=191} [2024-06-20 16:23:49,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-20 16:23:49,389 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 191 transitions, 2248 flow [2024-06-20 16:23:49,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:49,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:49,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:49,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-20 16:23:49,390 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:49,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:49,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1853272781, now seen corresponding path program 3 times [2024-06-20 16:23:49,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:49,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231273383] [2024-06-20 16:23:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:50,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:50,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231273383] [2024-06-20 16:23:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231273383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:50,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:50,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:50,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864947459] [2024-06-20 16:23:50,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:50,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:50,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:50,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:50,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 191 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:50,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:50,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:50,652 INFO L124 PetriNetUnfolderBase]: 553/968 cut-off events. [2024-06-20 16:23:50,653 INFO L125 PetriNetUnfolderBase]: For 96462/96466 co-relation queries the response was YES. [2024-06-20 16:23:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7727 conditions, 968 events. 553/968 cut-off events. For 96462/96466 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4530 event pairs, 63 based on Foata normal form. 3/971 useless extension candidates. Maximal degree in co-relation 7622. Up to 557 conditions per place. [2024-06-20 16:23:50,661 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 106 selfloop transitions, 101 changer transitions 0/209 dead transitions. [2024-06-20 16:23:50,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 209 transitions, 2990 flow [2024-06-20 16:23:50,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:50,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-20 16:23:50,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-20 16:23:50,662 INFO L175 Difference]: Start difference. First operand has 215 places, 191 transitions, 2248 flow. Second operand 10 states and 117 transitions. [2024-06-20 16:23:50,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 209 transitions, 2990 flow [2024-06-20 16:23:50,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 209 transitions, 2856 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-20 16:23:50,899 INFO L231 Difference]: Finished difference. Result has 218 places, 191 transitions, 2324 flow [2024-06-20 16:23:50,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2114, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2324, PETRI_PLACES=218, PETRI_TRANSITIONS=191} [2024-06-20 16:23:50,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-20 16:23:50,901 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 191 transitions, 2324 flow [2024-06-20 16:23:50,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:50,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:50,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:50,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-20 16:23:50,902 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:50,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1862469551, now seen corresponding path program 4 times [2024-06-20 16:23:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15672045] [2024-06-20 16:23:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:51,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:51,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15672045] [2024-06-20 16:23:51,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15672045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:51,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:51,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:51,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499231958] [2024-06-20 16:23:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:51,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:51,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:52,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:52,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 191 transitions, 2324 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:52,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:52,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:52,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:52,493 INFO L124 PetriNetUnfolderBase]: 554/970 cut-off events. [2024-06-20 16:23:52,493 INFO L125 PetriNetUnfolderBase]: For 94424/94424 co-relation queries the response was YES. [2024-06-20 16:23:52,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7764 conditions, 970 events. 554/970 cut-off events. For 94424/94424 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4558 event pairs, 101 based on Foata normal form. 3/973 useless extension candidates. Maximal degree in co-relation 7658. Up to 921 conditions per place. [2024-06-20 16:23:52,504 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 18 changer transitions 0/206 dead transitions. [2024-06-20 16:23:52,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 206 transitions, 2937 flow [2024-06-20 16:23:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:52,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-20 16:23:52,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-20 16:23:52,505 INFO L175 Difference]: Start difference. First operand has 218 places, 191 transitions, 2324 flow. Second operand 10 states and 100 transitions. [2024-06-20 16:23:52,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 206 transitions, 2937 flow [2024-06-20 16:23:52,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 206 transitions, 2795 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-20 16:23:52,819 INFO L231 Difference]: Finished difference. Result has 222 places, 193 transitions, 2260 flow [2024-06-20 16:23:52,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2260, PETRI_PLACES=222, PETRI_TRANSITIONS=193} [2024-06-20 16:23:52,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-20 16:23:52,820 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 193 transitions, 2260 flow [2024-06-20 16:23:52,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:52,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:52,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:52,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-20 16:23:52,820 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash 919247476, now seen corresponding path program 9 times [2024-06-20 16:23:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375992251] [2024-06-20 16:23:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:53,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:53,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375992251] [2024-06-20 16:23:53,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375992251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:53,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:53,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:53,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928594721] [2024-06-20 16:23:53,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:53,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:53,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:53,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:53,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:53,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:53,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 193 transitions, 2260 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:53,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:53,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:53,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:53,973 INFO L124 PetriNetUnfolderBase]: 558/979 cut-off events. [2024-06-20 16:23:53,973 INFO L125 PetriNetUnfolderBase]: For 95493/95497 co-relation queries the response was YES. [2024-06-20 16:23:53,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 979 events. 558/979 cut-off events. For 95493/95497 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4598 event pairs, 81 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 7589. Up to 778 conditions per place. [2024-06-20 16:23:53,982 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 158 selfloop transitions, 48 changer transitions 0/208 dead transitions. [2024-06-20 16:23:53,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 208 transitions, 2874 flow [2024-06-20 16:23:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-20 16:23:53,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:23:53,983 INFO L175 Difference]: Start difference. First operand has 222 places, 193 transitions, 2260 flow. Second operand 9 states and 99 transitions. [2024-06-20 16:23:53,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 208 transitions, 2874 flow [2024-06-20 16:23:54,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 208 transitions, 2801 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:54,192 INFO L231 Difference]: Finished difference. Result has 223 places, 194 transitions, 2311 flow [2024-06-20 16:23:54,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2311, PETRI_PLACES=223, PETRI_TRANSITIONS=194} [2024-06-20 16:23:54,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-20 16:23:54,193 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 194 transitions, 2311 flow [2024-06-20 16:23:54,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:54,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:54,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:54,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-20 16:23:54,194 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:54,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1173405612, now seen corresponding path program 11 times [2024-06-20 16:23:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:54,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478842445] [2024-06-20 16:23:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:54,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:54,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478842445] [2024-06-20 16:23:54,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478842445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:54,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:54,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:54,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810510040] [2024-06-20 16:23:54,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:54,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:54,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:54,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:54,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:54,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:54,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 194 transitions, 2311 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:54,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:54,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:54,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:55,040 INFO L124 PetriNetUnfolderBase]: 564/989 cut-off events. [2024-06-20 16:23:55,040 INFO L125 PetriNetUnfolderBase]: For 98713/98717 co-relation queries the response was YES. [2024-06-20 16:23:55,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7841 conditions, 989 events. 564/989 cut-off events. For 98713/98717 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4672 event pairs, 97 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 7733. Up to 430 conditions per place. [2024-06-20 16:23:55,048 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 121 selfloop transitions, 92 changer transitions 0/215 dead transitions. [2024-06-20 16:23:55,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 215 transitions, 3266 flow [2024-06-20 16:23:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-20 16:23:55,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-20 16:23:55,050 INFO L175 Difference]: Start difference. First operand has 223 places, 194 transitions, 2311 flow. Second operand 10 states and 125 transitions. [2024-06-20 16:23:55,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 215 transitions, 3266 flow [2024-06-20 16:23:55,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 215 transitions, 3120 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-20 16:23:55,281 INFO L231 Difference]: Finished difference. Result has 225 places, 196 transitions, 2399 flow [2024-06-20 16:23:55,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2399, PETRI_PLACES=225, PETRI_TRANSITIONS=196} [2024-06-20 16:23:55,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-20 16:23:55,282 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 196 transitions, 2399 flow [2024-06-20 16:23:55,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:55,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:55,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:55,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-20 16:23:55,283 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:55,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1599182566, now seen corresponding path program 10 times [2024-06-20 16:23:55,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:55,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919789917] [2024-06-20 16:23:55,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:55,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:56,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:56,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919789917] [2024-06-20 16:23:56,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919789917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:56,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456450011] [2024-06-20 16:23:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:56,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:56,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:56,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 196 transitions, 2399 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:56,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:56,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:56,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:56,441 INFO L124 PetriNetUnfolderBase]: 561/984 cut-off events. [2024-06-20 16:23:56,441 INFO L125 PetriNetUnfolderBase]: For 96224/96228 co-relation queries the response was YES. [2024-06-20 16:23:56,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7707 conditions, 984 events. 561/984 cut-off events. For 96224/96228 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4675 event pairs, 76 based on Foata normal form. 2/986 useless extension candidates. Maximal degree in co-relation 7600. Up to 812 conditions per place. [2024-06-20 16:23:56,450 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 157 selfloop transitions, 50 changer transitions 0/209 dead transitions. [2024-06-20 16:23:56,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 209 transitions, 2849 flow [2024-06-20 16:23:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-20 16:23:56,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-20 16:23:56,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-20 16:23:56,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-20 16:23:56,451 INFO L175 Difference]: Start difference. First operand has 225 places, 196 transitions, 2399 flow. Second operand 9 states and 97 transitions. [2024-06-20 16:23:56,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 209 transitions, 2849 flow [2024-06-20 16:23:56,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 209 transitions, 2602 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:56,678 INFO L231 Difference]: Finished difference. Result has 225 places, 196 transitions, 2256 flow [2024-06-20 16:23:56,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2256, PETRI_PLACES=225, PETRI_TRANSITIONS=196} [2024-06-20 16:23:56,679 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-20 16:23:56,679 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 196 transitions, 2256 flow [2024-06-20 16:23:56,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:56,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:56,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:56,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-20 16:23:56,687 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:56,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1862469272, now seen corresponding path program 12 times [2024-06-20 16:23:56,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080690581] [2024-06-20 16:23:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:56,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080690581] [2024-06-20 16:23:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080690581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:57,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:57,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267825349] [2024-06-20 16:23:57,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:57,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:57,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:57,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:57,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:57,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 196 transitions, 2256 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:57,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:57,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:57,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:57,764 INFO L124 PetriNetUnfolderBase]: 553/971 cut-off events. [2024-06-20 16:23:57,764 INFO L125 PetriNetUnfolderBase]: For 92370/92370 co-relation queries the response was YES. [2024-06-20 16:23:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7107 conditions, 971 events. 553/971 cut-off events. For 92370/92370 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4593 event pairs, 100 based on Foata normal form. 4/975 useless extension candidates. Maximal degree in co-relation 7001. Up to 911 conditions per place. [2024-06-20 16:23:57,773 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 184 selfloop transitions, 23 changer transitions 0/209 dead transitions. [2024-06-20 16:23:57,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 209 transitions, 2852 flow [2024-06-20 16:23:57,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:57,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:57,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-20 16:23:57,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-20 16:23:57,774 INFO L175 Difference]: Start difference. First operand has 225 places, 196 transitions, 2256 flow. Second operand 10 states and 102 transitions. [2024-06-20 16:23:57,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 209 transitions, 2852 flow [2024-06-20 16:23:57,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 209 transitions, 2670 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-20 16:23:57,981 INFO L231 Difference]: Finished difference. Result has 226 places, 196 transitions, 2129 flow [2024-06-20 16:23:57,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2129, PETRI_PLACES=226, PETRI_TRANSITIONS=196} [2024-06-20 16:23:57,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 16:23:57,982 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 196 transitions, 2129 flow [2024-06-20 16:23:57,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:57,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:57,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:57,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-20 16:23:57,983 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:57,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1176142216, now seen corresponding path program 13 times [2024-06-20 16:23:57,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:57,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958063094] [2024-06-20 16:23:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:57,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:58,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:58,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958063094] [2024-06-20 16:23:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958063094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:58,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:58,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:58,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097436159] [2024-06-20 16:23:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:58,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:58,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:23:58,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:23:58,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 196 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:58,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:23:58,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:23:58,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:23:59,013 INFO L124 PetriNetUnfolderBase]: 547/962 cut-off events. [2024-06-20 16:23:59,013 INFO L125 PetriNetUnfolderBase]: For 83014/83018 co-relation queries the response was YES. [2024-06-20 16:23:59,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6758 conditions, 962 events. 547/962 cut-off events. For 83014/83018 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4553 event pairs, 86 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6651. Up to 417 conditions per place. [2024-06-20 16:23:59,020 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 109 changer transitions 0/215 dead transitions. [2024-06-20 16:23:59,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 215 transitions, 3059 flow [2024-06-20 16:23:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:23:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:23:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-20 16:23:59,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-20 16:23:59,022 INFO L175 Difference]: Start difference. First operand has 226 places, 196 transitions, 2129 flow. Second operand 10 states and 122 transitions. [2024-06-20 16:23:59,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 215 transitions, 3059 flow [2024-06-20 16:23:59,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 215 transitions, 2950 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-20 16:23:59,212 INFO L231 Difference]: Finished difference. Result has 225 places, 196 transitions, 2243 flow [2024-06-20 16:23:59,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2243, PETRI_PLACES=225, PETRI_TRANSITIONS=196} [2024-06-20 16:23:59,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2024-06-20 16:23:59,213 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 196 transitions, 2243 flow [2024-06-20 16:23:59,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:23:59,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:23:59,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:23:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-20 16:23:59,213 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:23:59,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:23:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398047, now seen corresponding path program 5 times [2024-06-20 16:23:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:23:59,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226860272] [2024-06-20 16:23:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:23:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:23:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:23:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:23:59,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:23:59,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226860272] [2024-06-20 16:23:59,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226860272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:23:59,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:23:59,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:23:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732962963] [2024-06-20 16:23:59,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:23:59,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:23:59,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:23:59,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:23:59,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:00,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:00,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 196 transitions, 2243 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:00,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:00,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:00,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:00,310 INFO L124 PetriNetUnfolderBase]: 543/957 cut-off events. [2024-06-20 16:24:00,311 INFO L125 PetriNetUnfolderBase]: For 79758/79762 co-relation queries the response was YES. [2024-06-20 16:24:00,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6704 conditions, 957 events. 543/957 cut-off events. For 79758/79762 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4528 event pairs, 68 based on Foata normal form. 3/960 useless extension candidates. Maximal degree in co-relation 6597. Up to 539 conditions per place. [2024-06-20 16:24:00,319 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 116 selfloop transitions, 96 changer transitions 0/214 dead transitions. [2024-06-20 16:24:00,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 214 transitions, 3023 flow [2024-06-20 16:24:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-20 16:24:00,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-20 16:24:00,320 INFO L175 Difference]: Start difference. First operand has 225 places, 196 transitions, 2243 flow. Second operand 10 states and 118 transitions. [2024-06-20 16:24:00,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 214 transitions, 3023 flow [2024-06-20 16:24:00,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 214 transitions, 2847 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:00,532 INFO L231 Difference]: Finished difference. Result has 226 places, 196 transitions, 2268 flow [2024-06-20 16:24:00,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2268, PETRI_PLACES=226, PETRI_TRANSITIONS=196} [2024-06-20 16:24:00,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-20 16:24:00,533 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 196 transitions, 2268 flow [2024-06-20 16:24:00,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:00,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:00,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:00,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-20 16:24:00,533 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:00,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1865421757, now seen corresponding path program 6 times [2024-06-20 16:24:00,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:00,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640230165] [2024-06-20 16:24:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:00,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:01,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:01,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640230165] [2024-06-20 16:24:01,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640230165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:01,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:01,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:01,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397586658] [2024-06-20 16:24:01,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:01,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 196 transitions, 2268 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:01,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:01,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:01,792 INFO L124 PetriNetUnfolderBase]: 539/949 cut-off events. [2024-06-20 16:24:01,792 INFO L125 PetriNetUnfolderBase]: For 73759/73759 co-relation queries the response was YES. [2024-06-20 16:24:01,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6597 conditions, 949 events. 539/949 cut-off events. For 73759/73759 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4486 event pairs, 95 based on Foata normal form. 1/950 useless extension candidates. Maximal degree in co-relation 6489. Up to 900 conditions per place. [2024-06-20 16:24:01,800 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 22 changer transitions 0/209 dead transitions. [2024-06-20 16:24:01,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 209 transitions, 2716 flow [2024-06-20 16:24:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:01,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:01,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-20 16:24:01,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-20 16:24:01,802 INFO L175 Difference]: Start difference. First operand has 226 places, 196 transitions, 2268 flow. Second operand 11 states and 108 transitions. [2024-06-20 16:24:01,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 209 transitions, 2716 flow [2024-06-20 16:24:01,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 209 transitions, 2371 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:02,002 INFO L231 Difference]: Finished difference. Result has 227 places, 196 transitions, 1972 flow [2024-06-20 16:24:02,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1972, PETRI_PLACES=227, PETRI_TRANSITIONS=196} [2024-06-20 16:24:02,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-20 16:24:02,003 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 196 transitions, 1972 flow [2024-06-20 16:24:02,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:02,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:02,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-20 16:24:02,003 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:02,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1599397768, now seen corresponding path program 14 times [2024-06-20 16:24:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019044880] [2024-06-20 16:24:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:02,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:02,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019044880] [2024-06-20 16:24:02,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019044880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:02,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:02,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191233345] [2024-06-20 16:24:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:02,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:02,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:02,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:02,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 196 transitions, 1972 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:02,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:02,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:02,985 INFO L124 PetriNetUnfolderBase]: 531/938 cut-off events. [2024-06-20 16:24:02,986 INFO L125 PetriNetUnfolderBase]: For 71552/71556 co-relation queries the response was YES. [2024-06-20 16:24:02,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5909 conditions, 938 events. 531/938 cut-off events. For 71552/71556 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4450 event pairs, 72 based on Foata normal form. 4/942 useless extension candidates. Maximal degree in co-relation 5800. Up to 408 conditions per place. [2024-06-20 16:24:02,993 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 115 selfloop transitions, 97 changer transitions 0/214 dead transitions. [2024-06-20 16:24:02,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 214 transitions, 2760 flow [2024-06-20 16:24:02,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:02,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-20 16:24:02,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-20 16:24:02,994 INFO L175 Difference]: Start difference. First operand has 227 places, 196 transitions, 1972 flow. Second operand 10 states and 121 transitions. [2024-06-20 16:24:02,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 214 transitions, 2760 flow [2024-06-20 16:24:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 214 transitions, 2668 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:03,150 INFO L231 Difference]: Finished difference. Result has 227 places, 196 transitions, 2082 flow [2024-06-20 16:24:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2082, PETRI_PLACES=227, PETRI_TRANSITIONS=196} [2024-06-20 16:24:03,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2024-06-20 16:24:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 196 transitions, 2082 flow [2024-06-20 16:24:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:03,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:03,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-20 16:24:03,151 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:03,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1599188518, now seen corresponding path program 15 times [2024-06-20 16:24:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:03,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363543077] [2024-06-20 16:24:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:03,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:03,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:03,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363543077] [2024-06-20 16:24:03,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363543077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:03,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414480393] [2024-06-20 16:24:03,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:03,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:03,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:03,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:03,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:03,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:03,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 196 transitions, 2082 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:03,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:03,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:03,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:04,116 INFO L124 PetriNetUnfolderBase]: 525/928 cut-off events. [2024-06-20 16:24:04,117 INFO L125 PetriNetUnfolderBase]: For 61037/61041 co-relation queries the response was YES. [2024-06-20 16:24:04,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 928 events. 525/928 cut-off events. For 61037/61041 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4375 event pairs, 70 based on Foata normal form. 2/930 useless extension candidates. Maximal degree in co-relation 5749. Up to 404 conditions per place. [2024-06-20 16:24:04,125 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 104 selfloop transitions, 107 changer transitions 0/213 dead transitions. [2024-06-20 16:24:04,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 213 transitions, 2712 flow [2024-06-20 16:24:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-20 16:24:04,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-20 16:24:04,135 INFO L175 Difference]: Start difference. First operand has 227 places, 196 transitions, 2082 flow. Second operand 10 states and 119 transitions. [2024-06-20 16:24:04,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 213 transitions, 2712 flow [2024-06-20 16:24:04,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 213 transitions, 2501 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:04,281 INFO L231 Difference]: Finished difference. Result has 229 places, 196 transitions, 2090 flow [2024-06-20 16:24:04,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=229, PETRI_TRANSITIONS=196} [2024-06-20 16:24:04,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-20 16:24:04,281 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 196 transitions, 2090 flow [2024-06-20 16:24:04,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 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) [2024-06-20 16:24:04,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:04,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:04,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-20 16:24:04,282 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 913361737, now seen corresponding path program 1 times [2024-06-20 16:24:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:04,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6692280] [2024-06-20 16:24:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:05,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:05,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6692280] [2024-06-20 16:24:05,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6692280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:05,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:05,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:05,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965031127] [2024-06-20 16:24:05,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:05,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:05,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:05,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:05,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:05,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 196 transitions, 2090 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:05,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:05,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:05,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:05,516 INFO L124 PetriNetUnfolderBase]: 529/935 cut-off events. [2024-06-20 16:24:05,516 INFO L125 PetriNetUnfolderBase]: For 62322/62322 co-relation queries the response was YES. [2024-06-20 16:24:05,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5920 conditions, 935 events. 529/935 cut-off events. For 62322/62322 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4454 event pairs, 68 based on Foata normal form. 2/937 useless extension candidates. Maximal degree in co-relation 5809. Up to 830 conditions per place. [2024-06-20 16:24:05,523 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 193 selfloop transitions, 21 changer transitions 0/216 dead transitions. [2024-06-20 16:24:05,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 216 transitions, 2578 flow [2024-06-20 16:24:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:05,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-20 16:24:05,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-20 16:24:05,525 INFO L175 Difference]: Start difference. First operand has 229 places, 196 transitions, 2090 flow. Second operand 10 states and 101 transitions. [2024-06-20 16:24:05,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 216 transitions, 2578 flow [2024-06-20 16:24:05,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 216 transitions, 2294 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 16:24:05,668 INFO L231 Difference]: Finished difference. Result has 228 places, 197 transitions, 1864 flow [2024-06-20 16:24:05,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=228, PETRI_TRANSITIONS=197} [2024-06-20 16:24:05,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-20 16:24:05,669 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 197 transitions, 1864 flow [2024-06-20 16:24:05,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:05,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:05,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:05,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-20 16:24:05,670 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:05,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:05,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1963943733, now seen corresponding path program 2 times [2024-06-20 16:24:05,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:05,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590551636] [2024-06-20 16:24:05,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:05,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:06,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:06,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590551636] [2024-06-20 16:24:06,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590551636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:06,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:06,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972553385] [2024-06-20 16:24:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:06,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:06,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 197 transitions, 1864 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:06,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:06,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:06,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:06,914 INFO L124 PetriNetUnfolderBase]: 540/956 cut-off events. [2024-06-20 16:24:06,915 INFO L125 PetriNetUnfolderBase]: For 69664/69664 co-relation queries the response was YES. [2024-06-20 16:24:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 956 events. 540/956 cut-off events. For 69664/69664 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4600 event pairs, 81 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 5818. Up to 822 conditions per place. [2024-06-20 16:24:06,923 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-20 16:24:06,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 219 transitions, 2540 flow [2024-06-20 16:24:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 16:24:06,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-20 16:24:06,925 INFO L175 Difference]: Start difference. First operand has 228 places, 197 transitions, 1864 flow. Second operand 10 states and 107 transitions. [2024-06-20 16:24:06,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 219 transitions, 2540 flow [2024-06-20 16:24:07,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 219 transitions, 2492 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:07,103 INFO L231 Difference]: Finished difference. Result has 230 places, 199 transitions, 1914 flow [2024-06-20 16:24:07,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1914, PETRI_PLACES=230, PETRI_TRANSITIONS=199} [2024-06-20 16:24:07,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-20 16:24:07,104 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 199 transitions, 1914 flow [2024-06-20 16:24:07,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:07,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:07,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:07,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-20 16:24:07,105 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:07,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:07,105 INFO L85 PathProgramCache]: Analyzing trace with hash -748606117, now seen corresponding path program 3 times [2024-06-20 16:24:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:07,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841159811] [2024-06-20 16:24:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:07,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:08,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841159811] [2024-06-20 16:24:08,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841159811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:08,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:08,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628898525] [2024-06-20 16:24:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:08,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:08,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:08,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:08,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 199 transitions, 1914 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:08,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:08,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:08,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:08,469 INFO L124 PetriNetUnfolderBase]: 544/964 cut-off events. [2024-06-20 16:24:08,470 INFO L125 PetriNetUnfolderBase]: For 71919/71919 co-relation queries the response was YES. [2024-06-20 16:24:08,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6020 conditions, 964 events. 544/964 cut-off events. For 71919/71919 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4643 event pairs, 83 based on Foata normal form. 2/966 useless extension candidates. Maximal degree in co-relation 5907. Up to 802 conditions per place. [2024-06-20 16:24:08,478 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 186 selfloop transitions, 32 changer transitions 0/220 dead transitions. [2024-06-20 16:24:08,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 220 transitions, 2582 flow [2024-06-20 16:24:08,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 16:24:08,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-20 16:24:08,479 INFO L175 Difference]: Start difference. First operand has 230 places, 199 transitions, 1914 flow. Second operand 10 states and 108 transitions. [2024-06-20 16:24:08,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 220 transitions, 2582 flow [2024-06-20 16:24:08,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 220 transitions, 2523 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-20 16:24:08,668 INFO L231 Difference]: Finished difference. Result has 234 places, 200 transitions, 1939 flow [2024-06-20 16:24:08,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=234, PETRI_TRANSITIONS=200} [2024-06-20 16:24:08,669 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-20 16:24:08,669 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 200 transitions, 1939 flow [2024-06-20 16:24:08,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:08,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:08,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-20 16:24:08,670 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:08,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1963938897, now seen corresponding path program 1 times [2024-06-20 16:24:08,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:08,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377169007] [2024-06-20 16:24:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:09,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377169007] [2024-06-20 16:24:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377169007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:09,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:09,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:09,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298385558] [2024-06-20 16:24:09,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:09,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:09,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:09,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:09,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 200 transitions, 1939 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:09,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:09,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:09,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:09,905 INFO L124 PetriNetUnfolderBase]: 541/959 cut-off events. [2024-06-20 16:24:09,905 INFO L125 PetriNetUnfolderBase]: For 66755/66755 co-relation queries the response was YES. [2024-06-20 16:24:09,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5950 conditions, 959 events. 541/959 cut-off events. For 66755/66755 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4623 event pairs, 82 based on Foata normal form. 1/960 useless extension candidates. Maximal degree in co-relation 5835. Up to 841 conditions per place. [2024-06-20 16:24:09,913 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 180 selfloop transitions, 37 changer transitions 0/219 dead transitions. [2024-06-20 16:24:09,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 219 transitions, 2431 flow [2024-06-20 16:24:09,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-20 16:24:09,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-20 16:24:09,915 INFO L175 Difference]: Start difference. First operand has 234 places, 200 transitions, 1939 flow. Second operand 10 states and 106 transitions. [2024-06-20 16:24:09,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 219 transitions, 2431 flow [2024-06-20 16:24:10,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 219 transitions, 2345 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:10,097 INFO L231 Difference]: Finished difference. Result has 236 places, 200 transitions, 1935 flow [2024-06-20 16:24:10,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1935, PETRI_PLACES=236, PETRI_TRANSITIONS=200} [2024-06-20 16:24:10,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-20 16:24:10,098 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 200 transitions, 1935 flow [2024-06-20 16:24:10,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:10,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:10,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:10,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-20 16:24:10,098 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:10,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash -748486147, now seen corresponding path program 4 times [2024-06-20 16:24:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738066336] [2024-06-20 16:24:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:10,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738066336] [2024-06-20 16:24:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738066336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:10,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690315069] [2024-06-20 16:24:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:10,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:10,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:10,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 200 transitions, 1935 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:10,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:10,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:10,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:11,275 INFO L124 PetriNetUnfolderBase]: 538/954 cut-off events. [2024-06-20 16:24:11,275 INFO L125 PetriNetUnfolderBase]: For 64774/64774 co-relation queries the response was YES. [2024-06-20 16:24:11,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5767 conditions, 954 events. 538/954 cut-off events. For 64774/64774 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4584 event pairs, 81 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 5651. Up to 839 conditions per place. [2024-06-20 16:24:11,284 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-20 16:24:11,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 219 transitions, 2425 flow [2024-06-20 16:24:11,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:11,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:11,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-20 16:24:11,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-20 16:24:11,286 INFO L175 Difference]: Start difference. First operand has 236 places, 200 transitions, 1935 flow. Second operand 10 states and 105 transitions. [2024-06-20 16:24:11,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 219 transitions, 2425 flow [2024-06-20 16:24:11,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 219 transitions, 2254 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-20 16:24:11,463 INFO L231 Difference]: Finished difference. Result has 234 places, 200 transitions, 1837 flow [2024-06-20 16:24:11,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1764, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1837, PETRI_PLACES=234, PETRI_TRANSITIONS=200} [2024-06-20 16:24:11,463 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-20 16:24:11,464 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 200 transitions, 1837 flow [2024-06-20 16:24:11,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:11,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:11,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:11,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-20 16:24:11,464 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:11,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1831552825, now seen corresponding path program 5 times [2024-06-20 16:24:11,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:11,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470935621] [2024-06-20 16:24:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:12,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470935621] [2024-06-20 16:24:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470935621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:12,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:12,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121190605] [2024-06-20 16:24:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:12,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:12,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 200 transitions, 1837 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:12,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:12,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:12,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:12,604 INFO L124 PetriNetUnfolderBase]: 542/962 cut-off events. [2024-06-20 16:24:12,604 INFO L125 PetriNetUnfolderBase]: For 66136/66136 co-relation queries the response was YES. [2024-06-20 16:24:12,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5702 conditions, 962 events. 542/962 cut-off events. For 66136/66136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4650 event pairs, 81 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 5585. Up to 796 conditions per place. [2024-06-20 16:24:12,612 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-06-20 16:24:12,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 218 transitions, 2333 flow [2024-06-20 16:24:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:24:12,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:24:12,613 INFO L175 Difference]: Start difference. First operand has 234 places, 200 transitions, 1837 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:24:12,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 218 transitions, 2333 flow [2024-06-20 16:24:12,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 218 transitions, 2262 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:12,775 INFO L231 Difference]: Finished difference. Result has 235 places, 201 transitions, 1870 flow [2024-06-20 16:24:12,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1870, PETRI_PLACES=235, PETRI_TRANSITIONS=201} [2024-06-20 16:24:12,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 205 predicate places. [2024-06-20 16:24:12,776 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 201 transitions, 1870 flow [2024-06-20 16:24:12,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:12,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:12,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:12,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-20 16:24:12,777 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:12,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -150832949, now seen corresponding path program 6 times [2024-06-20 16:24:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385269381] [2024-06-20 16:24:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:13,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:13,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:13,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385269381] [2024-06-20 16:24:13,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385269381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:13,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:13,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:13,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700631131] [2024-06-20 16:24:13,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:13,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:13,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:13,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:13,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:13,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:13,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 201 transitions, 1870 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:13,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:13,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:13,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:14,025 INFO L124 PetriNetUnfolderBase]: 546/970 cut-off events. [2024-06-20 16:24:14,025 INFO L125 PetriNetUnfolderBase]: For 67808/67808 co-relation queries the response was YES. [2024-06-20 16:24:14,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 970 events. 546/970 cut-off events. For 67808/67808 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4700 event pairs, 81 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 5669. Up to 790 conditions per place. [2024-06-20 16:24:14,034 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-20 16:24:14,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 219 transitions, 2368 flow [2024-06-20 16:24:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 16:24:14,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:24:14,035 INFO L175 Difference]: Start difference. First operand has 235 places, 201 transitions, 1870 flow. Second operand 10 states and 110 transitions. [2024-06-20 16:24:14,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 219 transitions, 2368 flow [2024-06-20 16:24:14,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 219 transitions, 2274 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:14,232 INFO L231 Difference]: Finished difference. Result has 237 places, 202 transitions, 1884 flow [2024-06-20 16:24:14,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1884, PETRI_PLACES=237, PETRI_TRANSITIONS=202} [2024-06-20 16:24:14,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-20 16:24:14,233 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 202 transitions, 1884 flow [2024-06-20 16:24:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:14,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:14,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:14,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-20 16:24:14,233 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:14,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1836141445, now seen corresponding path program 7 times [2024-06-20 16:24:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:14,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802836771] [2024-06-20 16:24:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:15,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:15,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802836771] [2024-06-20 16:24:15,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802836771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:15,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:15,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:15,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574350038] [2024-06-20 16:24:15,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:15,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:15,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:15,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:15,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 202 transitions, 1884 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:15,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:15,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:15,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:15,594 INFO L124 PetriNetUnfolderBase]: 557/991 cut-off events. [2024-06-20 16:24:15,594 INFO L125 PetriNetUnfolderBase]: For 77287/77287 co-relation queries the response was YES. [2024-06-20 16:24:15,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6098 conditions, 991 events. 557/991 cut-off events. For 77287/77287 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4854 event pairs, 84 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 5979. Up to 768 conditions per place. [2024-06-20 16:24:15,603 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 44 changer transitions 0/222 dead transitions. [2024-06-20 16:24:15,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 222 transitions, 2584 flow [2024-06-20 16:24:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 16:24:15,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:24:15,605 INFO L175 Difference]: Start difference. First operand has 237 places, 202 transitions, 1884 flow. Second operand 10 states and 110 transitions. [2024-06-20 16:24:15,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 222 transitions, 2584 flow [2024-06-20 16:24:15,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 222 transitions, 2486 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:15,823 INFO L231 Difference]: Finished difference. Result has 239 places, 204 transitions, 1920 flow [2024-06-20 16:24:15,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1920, PETRI_PLACES=239, PETRI_TRANSITIONS=204} [2024-06-20 16:24:15,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-20 16:24:15,823 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 204 transitions, 1920 flow [2024-06-20 16:24:15,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:15,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:15,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:15,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-20 16:24:15,824 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:15,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 19874131, now seen corresponding path program 8 times [2024-06-20 16:24:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:15,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596171623] [2024-06-20 16:24:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:16,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596171623] [2024-06-20 16:24:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596171623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:16,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:16,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:16,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067572491] [2024-06-20 16:24:16,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:16,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:16,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:16,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:16,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:16,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 204 transitions, 1920 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:16,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:16,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:16,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:16,990 INFO L124 PetriNetUnfolderBase]: 561/999 cut-off events. [2024-06-20 16:24:16,991 INFO L125 PetriNetUnfolderBase]: For 79282/79282 co-relation queries the response was YES. [2024-06-20 16:24:16,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6165 conditions, 999 events. 561/999 cut-off events. For 79282/79282 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4917 event pairs, 78 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 6045. Up to 833 conditions per place. [2024-06-20 16:24:16,999 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 45 changer transitions 0/222 dead transitions. [2024-06-20 16:24:17,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 222 transitions, 2430 flow [2024-06-20 16:24:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 16:24:17,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-20 16:24:17,001 INFO L175 Difference]: Start difference. First operand has 239 places, 204 transitions, 1920 flow. Second operand 10 states and 108 transitions. [2024-06-20 16:24:17,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 222 transitions, 2430 flow [2024-06-20 16:24:17,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 222 transitions, 2347 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-20 16:24:17,214 INFO L231 Difference]: Finished difference. Result has 243 places, 205 transitions, 1955 flow [2024-06-20 16:24:17,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1955, PETRI_PLACES=243, PETRI_TRANSITIONS=205} [2024-06-20 16:24:17,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-20 16:24:17,214 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 205 transitions, 1955 flow [2024-06-20 16:24:17,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:17,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:17,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:17,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-20 16:24:17,215 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:17,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:17,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1658643691, now seen corresponding path program 1 times [2024-06-20 16:24:17,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:17,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115032665] [2024-06-20 16:24:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:17,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:17,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:17,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115032665] [2024-06-20 16:24:17,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115032665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:17,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:17,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:17,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836941482] [2024-06-20 16:24:17,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:17,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:17,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:17,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:17,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:18,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:18,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 205 transitions, 1955 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:18,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:18,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:18,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:18,370 INFO L124 PetriNetUnfolderBase]: 565/1007 cut-off events. [2024-06-20 16:24:18,370 INFO L125 PetriNetUnfolderBase]: For 80869/80869 co-relation queries the response was YES. [2024-06-20 16:24:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6274 conditions, 1007 events. 565/1007 cut-off events. For 80869/80869 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4990 event pairs, 94 based on Foata normal form. 2/1009 useless extension candidates. Maximal degree in co-relation 6152. Up to 962 conditions per place. [2024-06-20 16:24:18,378 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 19 changer transitions 0/222 dead transitions. [2024-06-20 16:24:18,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 222 transitions, 2467 flow [2024-06-20 16:24:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:18,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-20 16:24:18,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-20 16:24:18,380 INFO L175 Difference]: Start difference. First operand has 243 places, 205 transitions, 1955 flow. Second operand 11 states and 106 transitions. [2024-06-20 16:24:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 222 transitions, 2467 flow [2024-06-20 16:24:18,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 222 transitions, 2367 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:18,625 INFO L231 Difference]: Finished difference. Result has 247 places, 207 transitions, 1936 flow [2024-06-20 16:24:18,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1936, PETRI_PLACES=247, PETRI_TRANSITIONS=207} [2024-06-20 16:24:18,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2024-06-20 16:24:18,625 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 207 transitions, 1936 flow [2024-06-20 16:24:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:18,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:18,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:18,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-20 16:24:18,626 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:18,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:18,626 INFO L85 PathProgramCache]: Analyzing trace with hash 19869481, now seen corresponding path program 9 times [2024-06-20 16:24:18,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:18,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177464852] [2024-06-20 16:24:18,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:18,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:19,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:19,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177464852] [2024-06-20 16:24:19,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177464852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:19,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:19,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:19,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046415040] [2024-06-20 16:24:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:19,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:19,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:19,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:19,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 207 transitions, 1936 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:19,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:19,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:19,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:19,821 INFO L124 PetriNetUnfolderBase]: 569/1015 cut-off events. [2024-06-20 16:24:19,821 INFO L125 PetriNetUnfolderBase]: For 82612/82612 co-relation queries the response was YES. [2024-06-20 16:24:19,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6269 conditions, 1015 events. 569/1015 cut-off events. For 82612/82612 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5060 event pairs, 80 based on Foata normal form. 2/1017 useless extension candidates. Maximal degree in co-relation 6145. Up to 826 conditions per place. [2024-06-20 16:24:19,830 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 47 changer transitions 0/226 dead transitions. [2024-06-20 16:24:19,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 226 transitions, 2630 flow [2024-06-20 16:24:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:19,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:24:19,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:24:19,831 INFO L175 Difference]: Start difference. First operand has 247 places, 207 transitions, 1936 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:24:19,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 226 transitions, 2630 flow [2024-06-20 16:24:20,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 226 transitions, 2573 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:20,064 INFO L231 Difference]: Finished difference. Result has 249 places, 208 transitions, 1995 flow [2024-06-20 16:24:20,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1995, PETRI_PLACES=249, PETRI_TRANSITIONS=208} [2024-06-20 16:24:20,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-20 16:24:20,064 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 208 transitions, 1995 flow [2024-06-20 16:24:20,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:20,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:20,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:20,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-20 16:24:20,065 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:20,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:20,065 INFO L85 PathProgramCache]: Analyzing trace with hash 26303221, now seen corresponding path program 10 times [2024-06-20 16:24:20,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:20,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250372559] [2024-06-20 16:24:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:20,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250372559] [2024-06-20 16:24:20,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250372559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:20,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:20,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-20 16:24:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020341249] [2024-06-20 16:24:20,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:20,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-20 16:24:20,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-20 16:24:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-20 16:24:20,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:20,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 208 transitions, 1995 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:20,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:20,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:20,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:21,184 INFO L124 PetriNetUnfolderBase]: 566/1010 cut-off events. [2024-06-20 16:24:21,184 INFO L125 PetriNetUnfolderBase]: For 76153/76153 co-relation queries the response was YES. [2024-06-20 16:24:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6117 conditions, 1010 events. 566/1010 cut-off events. For 76153/76153 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5009 event pairs, 79 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 5992. Up to 844 conditions per place. [2024-06-20 16:24:21,193 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 48 changer transitions 0/225 dead transitions. [2024-06-20 16:24:21,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 225 transitions, 2489 flow [2024-06-20 16:24:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-20 16:24:21,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-20 16:24:21,194 INFO L175 Difference]: Start difference. First operand has 249 places, 208 transitions, 1995 flow. Second operand 10 states and 107 transitions. [2024-06-20 16:24:21,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 225 transitions, 2489 flow [2024-06-20 16:24:21,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 225 transitions, 2365 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:21,411 INFO L231 Difference]: Finished difference. Result has 251 places, 208 transitions, 1971 flow [2024-06-20 16:24:21,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1971, PETRI_PLACES=251, PETRI_TRANSITIONS=208} [2024-06-20 16:24:21,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-20 16:24:21,411 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 208 transitions, 1971 flow [2024-06-20 16:24:21,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 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) [2024-06-20 16:24:21,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:21,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-20 16:24:21,412 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:21,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:21,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2039911853, now seen corresponding path program 11 times [2024-06-20 16:24:21,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:21,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123639589] [2024-06-20 16:24:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:21,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:22,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123639589] [2024-06-20 16:24:22,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123639589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:22,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:22,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620628678] [2024-06-20 16:24:22,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:22,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:22,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:22,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:22,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 208 transitions, 1971 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:22,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:22,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:22,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:22,883 INFO L124 PetriNetUnfolderBase]: 570/1019 cut-off events. [2024-06-20 16:24:22,883 INFO L125 PetriNetUnfolderBase]: For 77722/77726 co-relation queries the response was YES. [2024-06-20 16:24:22,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6143 conditions, 1019 events. 570/1019 cut-off events. For 77722/77726 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5086 event pairs, 66 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 6017. Up to 757 conditions per place. [2024-06-20 16:24:22,891 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 154 selfloop transitions, 69 changer transitions 0/225 dead transitions. [2024-06-20 16:24:22,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 225 transitions, 2485 flow [2024-06-20 16:24:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 16:24:22,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 16:24:22,892 INFO L175 Difference]: Start difference. First operand has 251 places, 208 transitions, 1971 flow. Second operand 10 states and 111 transitions. [2024-06-20 16:24:22,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 225 transitions, 2485 flow [2024-06-20 16:24:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 225 transitions, 2383 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:23,140 INFO L231 Difference]: Finished difference. Result has 252 places, 209 transitions, 2035 flow [2024-06-20 16:24:23,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2035, PETRI_PLACES=252, PETRI_TRANSITIONS=209} [2024-06-20 16:24:23,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-20 16:24:23,140 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 209 transitions, 2035 flow [2024-06-20 16:24:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:23,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:23,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:23,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-20 16:24:23,141 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:23,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1958266533, now seen corresponding path program 2 times [2024-06-20 16:24:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056155889] [2024-06-20 16:24:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:24,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:24,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056155889] [2024-06-20 16:24:24,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056155889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:24,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:24,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:24,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657525809] [2024-06-20 16:24:24,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:24,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:24,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 209 transitions, 2035 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:24,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:24,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:24,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:24,430 INFO L124 PetriNetUnfolderBase]: 590/1063 cut-off events. [2024-06-20 16:24:24,430 INFO L125 PetriNetUnfolderBase]: For 122397/122401 co-relation queries the response was YES. [2024-06-20 16:24:24,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6395 conditions, 1063 events. 590/1063 cut-off events. For 122397/122401 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5347 event pairs, 78 based on Foata normal form. 12/1075 useless extension candidates. Maximal degree in co-relation 6268. Up to 609 conditions per place. [2024-06-20 16:24:24,440 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 128 selfloop transitions, 93 changer transitions 9/232 dead transitions. [2024-06-20 16:24:24,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 232 transitions, 2605 flow [2024-06-20 16:24:24,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:24,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 16:24:24,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 16:24:24,441 INFO L175 Difference]: Start difference. First operand has 252 places, 209 transitions, 2035 flow. Second operand 11 states and 128 transitions. [2024-06-20 16:24:24,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 232 transitions, 2605 flow [2024-06-20 16:24:24,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 232 transitions, 2449 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:24,663 INFO L231 Difference]: Finished difference. Result has 255 places, 206 transitions, 2064 flow [2024-06-20 16:24:24,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2064, PETRI_PLACES=255, PETRI_TRANSITIONS=206} [2024-06-20 16:24:24,664 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-20 16:24:24,664 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 206 transitions, 2064 flow [2024-06-20 16:24:24,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:24,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:24,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:24,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-20 16:24:24,664 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:24,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:24,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1993501181, now seen corresponding path program 3 times [2024-06-20 16:24:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:24,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268761350] [2024-06-20 16:24:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:25,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:25,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268761350] [2024-06-20 16:24:25,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268761350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:25,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:25,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:25,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26140330] [2024-06-20 16:24:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:25,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:25,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 206 transitions, 2064 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:25,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:25,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:25,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:26,012 INFO L124 PetriNetUnfolderBase]: 560/1012 cut-off events. [2024-06-20 16:24:26,013 INFO L125 PetriNetUnfolderBase]: For 81799/81799 co-relation queries the response was YES. [2024-06-20 16:24:26,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6283 conditions, 1012 events. 560/1012 cut-off events. For 81799/81799 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5140 event pairs, 96 based on Foata normal form. 2/1014 useless extension candidates. Maximal degree in co-relation 6155. Up to 957 conditions per place. [2024-06-20 16:24:26,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 23 changer transitions 0/222 dead transitions. [2024-06-20 16:24:26,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 222 transitions, 2572 flow [2024-06-20 16:24:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:24:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:24:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-20 16:24:26,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-20 16:24:26,024 INFO L175 Difference]: Start difference. First operand has 255 places, 206 transitions, 2064 flow. Second operand 12 states and 116 transitions. [2024-06-20 16:24:26,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 222 transitions, 2572 flow [2024-06-20 16:24:26,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 222 transitions, 2362 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:26,301 INFO L231 Difference]: Finished difference. Result has 258 places, 207 transitions, 1936 flow [2024-06-20 16:24:26,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1936, PETRI_PLACES=258, PETRI_TRANSITIONS=207} [2024-06-20 16:24:26,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-20 16:24:26,302 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 207 transitions, 1936 flow [2024-06-20 16:24:26,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:26,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:26,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:26,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-20 16:24:26,302 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:26,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash 545327321, now seen corresponding path program 12 times [2024-06-20 16:24:26,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476766158] [2024-06-20 16:24:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:26,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476766158] [2024-06-20 16:24:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476766158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:27,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:27,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:27,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92760529] [2024-06-20 16:24:27,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:27,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:27,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:27,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:27,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 207 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:27,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:27,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:27,452 INFO L124 PetriNetUnfolderBase]: 564/1021 cut-off events. [2024-06-20 16:24:27,453 INFO L125 PetriNetUnfolderBase]: For 83132/83136 co-relation queries the response was YES. [2024-06-20 16:24:27,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 1021 events. 564/1021 cut-off events. For 83132/83136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5191 event pairs, 64 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 6018. Up to 759 conditions per place. [2024-06-20 16:24:27,462 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 144 selfloop transitions, 77 changer transitions 0/223 dead transitions. [2024-06-20 16:24:27,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 223 transitions, 2444 flow [2024-06-20 16:24:27,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-20 16:24:27,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-20 16:24:27,464 INFO L175 Difference]: Start difference. First operand has 258 places, 207 transitions, 1936 flow. Second operand 10 states and 108 transitions. [2024-06-20 16:24:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 223 transitions, 2444 flow [2024-06-20 16:24:27,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 223 transitions, 2372 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:27,777 INFO L231 Difference]: Finished difference. Result has 258 places, 208 transitions, 2048 flow [2024-06-20 16:24:27,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1864, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2048, PETRI_PLACES=258, PETRI_TRANSITIONS=208} [2024-06-20 16:24:27,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-20 16:24:27,778 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 208 transitions, 2048 flow [2024-06-20 16:24:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:27,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:27,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:27,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-20 16:24:27,779 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:27,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 4 times [2024-06-20 16:24:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:27,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78291897] [2024-06-20 16:24:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:27,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:28,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:28,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78291897] [2024-06-20 16:24:28,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78291897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:28,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:28,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:28,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381957083] [2024-06-20 16:24:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:28,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:28,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:28,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:28,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:28,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:28,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 208 transitions, 2048 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:28,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:28,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:28,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:28,955 INFO L124 PetriNetUnfolderBase]: 584/1065 cut-off events. [2024-06-20 16:24:28,956 INFO L125 PetriNetUnfolderBase]: For 130493/130497 co-relation queries the response was YES. [2024-06-20 16:24:28,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1065 events. 584/1065 cut-off events. For 130493/130497 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5421 event pairs, 70 based on Foata normal form. 12/1077 useless extension candidates. Maximal degree in co-relation 6326. Up to 615 conditions per place. [2024-06-20 16:24:28,965 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 98 changer transitions 8/231 dead transitions. [2024-06-20 16:24:28,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 231 transitions, 2620 flow [2024-06-20 16:24:28,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:28,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 16:24:28,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 16:24:28,967 INFO L175 Difference]: Start difference. First operand has 258 places, 208 transitions, 2048 flow. Second operand 11 states and 127 transitions. [2024-06-20 16:24:28,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 231 transitions, 2620 flow [2024-06-20 16:24:29,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 231 transitions, 2446 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:29,267 INFO L231 Difference]: Finished difference. Result has 261 places, 206 transitions, 2082 flow [2024-06-20 16:24:29,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2082, PETRI_PLACES=261, PETRI_TRANSITIONS=206} [2024-06-20 16:24:29,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-06-20 16:24:29,268 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 206 transitions, 2082 flow [2024-06-20 16:24:29,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:29,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:29,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:29,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-20 16:24:29,268 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:29,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:29,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2009338643, now seen corresponding path program 5 times [2024-06-20 16:24:29,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:29,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691455075] [2024-06-20 16:24:29,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:29,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:30,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:30,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:30,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691455075] [2024-06-20 16:24:30,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691455075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:30,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:30,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:30,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360039764] [2024-06-20 16:24:30,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:30,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:30,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:30,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:30,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:30,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:30,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 206 transitions, 2082 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:30,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:30,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:30,633 INFO L124 PetriNetUnfolderBase]: 574/1055 cut-off events. [2024-06-20 16:24:30,634 INFO L125 PetriNetUnfolderBase]: For 133593/133597 co-relation queries the response was YES. [2024-06-20 16:24:30,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6477 conditions, 1055 events. 574/1055 cut-off events. For 133593/133597 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5425 event pairs, 90 based on Foata normal form. 12/1067 useless extension candidates. Maximal degree in co-relation 6346. Up to 597 conditions per place. [2024-06-20 16:24:30,642 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 83 changer transitions 10/229 dead transitions. [2024-06-20 16:24:30,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 229 transitions, 2652 flow [2024-06-20 16:24:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:24:30,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:24:30,643 INFO L175 Difference]: Start difference. First operand has 261 places, 206 transitions, 2082 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:24:30,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 229 transitions, 2652 flow [2024-06-20 16:24:30,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 229 transitions, 2428 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:30,887 INFO L231 Difference]: Finished difference. Result has 263 places, 202 transitions, 2024 flow [2024-06-20 16:24:30,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2024, PETRI_PLACES=263, PETRI_TRANSITIONS=202} [2024-06-20 16:24:30,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-20 16:24:30,887 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 202 transitions, 2024 flow [2024-06-20 16:24:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:30,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:30,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:30,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-20 16:24:30,888 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:30,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:30,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2108250869, now seen corresponding path program 13 times [2024-06-20 16:24:30,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:30,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007859965] [2024-06-20 16:24:30,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:30,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:31,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:31,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007859965] [2024-06-20 16:24:31,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007859965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:31,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:31,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:31,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196412325] [2024-06-20 16:24:31,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:31,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:31,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:31,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:31,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 202 transitions, 2024 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:31,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:31,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:31,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:32,300 INFO L124 PetriNetUnfolderBase]: 540/1001 cut-off events. [2024-06-20 16:24:32,300 INFO L125 PetriNetUnfolderBase]: For 88965/88969 co-relation queries the response was YES. [2024-06-20 16:24:32,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6220 conditions, 1001 events. 540/1001 cut-off events. For 88965/88969 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5213 event pairs, 78 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 6088. Up to 739 conditions per place. [2024-06-20 16:24:32,311 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 66 changer transitions 0/218 dead transitions. [2024-06-20 16:24:32,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 218 transitions, 2524 flow [2024-06-20 16:24:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-20 16:24:32,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:24:32,312 INFO L175 Difference]: Start difference. First operand has 263 places, 202 transitions, 2024 flow. Second operand 10 states and 110 transitions. [2024-06-20 16:24:32,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 218 transitions, 2524 flow [2024-06-20 16:24:32,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 218 transitions, 2328 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:32,601 INFO L231 Difference]: Finished difference. Result has 264 places, 203 transitions, 1992 flow [2024-06-20 16:24:32,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1992, PETRI_PLACES=264, PETRI_TRANSITIONS=203} [2024-06-20 16:24:32,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-20 16:24:32,602 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 203 transitions, 1992 flow [2024-06-20 16:24:32,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:32,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:32,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:32,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-20 16:24:32,602 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:32,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:32,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 6 times [2024-06-20 16:24:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:32,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999602859] [2024-06-20 16:24:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:33,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999602859] [2024-06-20 16:24:33,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999602859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:33,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:33,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437368042] [2024-06-20 16:24:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:33,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:33,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:33,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 203 transitions, 1992 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:33,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:33,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:33,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:33,769 INFO L124 PetriNetUnfolderBase]: 573/1067 cut-off events. [2024-06-20 16:24:33,770 INFO L125 PetriNetUnfolderBase]: For 138794/138794 co-relation queries the response was YES. [2024-06-20 16:24:33,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 1067 events. 573/1067 cut-off events. For 138794/138794 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5544 event pairs, 105 based on Foata normal form. 2/1069 useless extension candidates. Maximal degree in co-relation 7275. Up to 924 conditions per place. [2024-06-20 16:24:33,780 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 25 changer transitions 0/225 dead transitions. [2024-06-20 16:24:33,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 225 transitions, 2744 flow [2024-06-20 16:24:33,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:24:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:24:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-20 16:24:33,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-20 16:24:33,782 INFO L175 Difference]: Start difference. First operand has 264 places, 203 transitions, 1992 flow. Second operand 12 states and 121 transitions. [2024-06-20 16:24:33,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 225 transitions, 2744 flow [2024-06-20 16:24:34,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 225 transitions, 2590 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:34,141 INFO L231 Difference]: Finished difference. Result has 268 places, 204 transitions, 1928 flow [2024-06-20 16:24:34,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1928, PETRI_PLACES=268, PETRI_TRANSITIONS=204} [2024-06-20 16:24:34,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-20 16:24:34,142 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 204 transitions, 1928 flow [2024-06-20 16:24:34,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:34,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:34,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:34,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-20 16:24:34,142 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:34,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1399901223, now seen corresponding path program 14 times [2024-06-20 16:24:34,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:34,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990572049] [2024-06-20 16:24:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:35,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:35,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990572049] [2024-06-20 16:24:35,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990572049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:35,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:35,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:35,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238621944] [2024-06-20 16:24:35,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:35,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:35,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:35,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:35,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 204 transitions, 1928 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:35,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:35,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:35,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:35,433 INFO L124 PetriNetUnfolderBase]: 577/1076 cut-off events. [2024-06-20 16:24:35,433 INFO L125 PetriNetUnfolderBase]: For 141589/141593 co-relation queries the response was YES. [2024-06-20 16:24:35,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7368 conditions, 1076 events. 577/1076 cut-off events. For 141589/141593 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5631 event pairs, 95 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 7234. Up to 814 conditions per place. [2024-06-20 16:24:35,444 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 63 changer transitions 0/221 dead transitions. [2024-06-20 16:24:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 221 transitions, 2440 flow [2024-06-20 16:24:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 16:24:35,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 16:24:35,445 INFO L175 Difference]: Start difference. First operand has 268 places, 204 transitions, 1928 flow. Second operand 10 states and 113 transitions. [2024-06-20 16:24:35,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 221 transitions, 2440 flow [2024-06-20 16:24:35,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 221 transitions, 2291 flow, removed 23 selfloop flow, removed 13 redundant places. [2024-06-20 16:24:35,838 INFO L231 Difference]: Finished difference. Result has 265 places, 205 transitions, 1939 flow [2024-06-20 16:24:35,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1939, PETRI_PLACES=265, PETRI_TRANSITIONS=205} [2024-06-20 16:24:35,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-20 16:24:35,839 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 205 transitions, 1939 flow [2024-06-20 16:24:35,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:35,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:35,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:35,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-20 16:24:35,839 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:35,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:35,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1928185851, now seen corresponding path program 15 times [2024-06-20 16:24:35,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:35,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967831075] [2024-06-20 16:24:35,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:36,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:36,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:36,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967831075] [2024-06-20 16:24:36,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967831075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:36,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:36,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827262581] [2024-06-20 16:24:36,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:36,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:36,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:36,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:36,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 205 transitions, 1939 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:36,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:36,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:36,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:37,173 INFO L124 PetriNetUnfolderBase]: 581/1084 cut-off events. [2024-06-20 16:24:37,173 INFO L125 PetriNetUnfolderBase]: For 143858/143862 co-relation queries the response was YES. [2024-06-20 16:24:37,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7387 conditions, 1084 events. 581/1084 cut-off events. For 143858/143862 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5683 event pairs, 97 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 7256. Up to 822 conditions per place. [2024-06-20 16:24:37,183 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 156 selfloop transitions, 64 changer transitions 0/222 dead transitions. [2024-06-20 16:24:37,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 222 transitions, 2455 flow [2024-06-20 16:24:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-20 16:24:37,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-20 16:24:37,186 INFO L175 Difference]: Start difference. First operand has 265 places, 205 transitions, 1939 flow. Second operand 10 states and 112 transitions. [2024-06-20 16:24:37,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 222 transitions, 2455 flow [2024-06-20 16:24:37,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 222 transitions, 2259 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:37,634 INFO L231 Difference]: Finished difference. Result has 265 places, 206 transitions, 1907 flow [2024-06-20 16:24:37,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1907, PETRI_PLACES=265, PETRI_TRANSITIONS=206} [2024-06-20 16:24:37,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-20 16:24:37,635 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 206 transitions, 1907 flow [2024-06-20 16:24:37,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:37,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:37,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:37,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-20 16:24:37,636 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:37,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:37,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1570608303, now seen corresponding path program 16 times [2024-06-20 16:24:37,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:37,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202499546] [2024-06-20 16:24:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:38,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:38,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202499546] [2024-06-20 16:24:38,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202499546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:38,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:38,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:38,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967322307] [2024-06-20 16:24:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:38,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:38,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:38,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:38,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:38,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 206 transitions, 1907 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:38,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:38,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:38,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:38,867 INFO L124 PetriNetUnfolderBase]: 585/1092 cut-off events. [2024-06-20 16:24:38,867 INFO L125 PetriNetUnfolderBase]: For 146489/146493 co-relation queries the response was YES. [2024-06-20 16:24:38,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7348 conditions, 1092 events. 585/1092 cut-off events. For 146489/146493 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5752 event pairs, 99 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 7218. Up to 816 conditions per place. [2024-06-20 16:24:38,878 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 153 selfloop transitions, 67 changer transitions 0/222 dead transitions. [2024-06-20 16:24:38,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 222 transitions, 2417 flow [2024-06-20 16:24:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:38,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 16:24:38,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 16:24:38,879 INFO L175 Difference]: Start difference. First operand has 265 places, 206 transitions, 1907 flow. Second operand 10 states and 111 transitions. [2024-06-20 16:24:38,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 222 transitions, 2417 flow [2024-06-20 16:24:39,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 222 transitions, 2265 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:39,323 INFO L231 Difference]: Finished difference. Result has 267 places, 207 transitions, 1925 flow [2024-06-20 16:24:39,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1925, PETRI_PLACES=267, PETRI_TRANSITIONS=207} [2024-06-20 16:24:39,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-20 16:24:39,323 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 207 transitions, 1925 flow [2024-06-20 16:24:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:39,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:39,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-20 16:24:39,324 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:39,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2105437341, now seen corresponding path program 17 times [2024-06-20 16:24:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233140981] [2024-06-20 16:24:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:39,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:40,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233140981] [2024-06-20 16:24:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233140981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:40,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:40,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:40,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699677782] [2024-06-20 16:24:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:40,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:40,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:40,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 207 transitions, 1925 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:40,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:40,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:40,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:40,487 INFO L124 PetriNetUnfolderBase]: 589/1100 cut-off events. [2024-06-20 16:24:40,487 INFO L125 PetriNetUnfolderBase]: For 149483/149487 co-relation queries the response was YES. [2024-06-20 16:24:40,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1100 events. 589/1100 cut-off events. For 149483/149487 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5794 event pairs, 103 based on Foata normal form. 2/1102 useless extension candidates. Maximal degree in co-relation 7286. Up to 749 conditions per place. [2024-06-20 16:24:40,499 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 73 changer transitions 0/224 dead transitions. [2024-06-20 16:24:40,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 224 transitions, 2647 flow [2024-06-20 16:24:40,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:40,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:40,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-20 16:24:40,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-20 16:24:40,500 INFO L175 Difference]: Start difference. First operand has 267 places, 207 transitions, 1925 flow. Second operand 10 states and 111 transitions. [2024-06-20 16:24:40,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 224 transitions, 2647 flow [2024-06-20 16:24:41,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 224 transitions, 2487 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:41,039 INFO L231 Difference]: Finished difference. Result has 269 places, 208 transitions, 1947 flow [2024-06-20 16:24:41,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1947, PETRI_PLACES=269, PETRI_TRANSITIONS=208} [2024-06-20 16:24:41,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-20 16:24:41,040 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 208 transitions, 1947 flow [2024-06-20 16:24:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:41,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:41,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:41,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-20 16:24:41,041 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:41,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1397280097, now seen corresponding path program 18 times [2024-06-20 16:24:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484489115] [2024-06-20 16:24:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484489115] [2024-06-20 16:24:41,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484489115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:41,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:41,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:41,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966797292] [2024-06-20 16:24:41,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:41,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:42,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:42,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 208 transitions, 1947 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:42,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:42,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:42,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:42,301 INFO L124 PetriNetUnfolderBase]: 593/1108 cut-off events. [2024-06-20 16:24:42,302 INFO L125 PetriNetUnfolderBase]: For 152665/152669 co-relation queries the response was YES. [2024-06-20 16:24:42,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 1108 events. 593/1108 cut-off events. For 152665/152669 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5876 event pairs, 101 based on Foata normal form. 2/1110 useless extension candidates. Maximal degree in co-relation 7370. Up to 826 conditions per place. [2024-06-20 16:24:42,312 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 158 selfloop transitions, 65 changer transitions 0/225 dead transitions. [2024-06-20 16:24:42,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 225 transitions, 2471 flow [2024-06-20 16:24:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:42,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-20 16:24:42,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-20 16:24:42,313 INFO L175 Difference]: Start difference. First operand has 269 places, 208 transitions, 1947 flow. Second operand 10 states and 113 transitions. [2024-06-20 16:24:42,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 225 transitions, 2471 flow [2024-06-20 16:24:42,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 225 transitions, 2262 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:42,845 INFO L231 Difference]: Finished difference. Result has 270 places, 209 transitions, 1908 flow [2024-06-20 16:24:42,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1908, PETRI_PLACES=270, PETRI_TRANSITIONS=209} [2024-06-20 16:24:42,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2024-06-20 16:24:42,846 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 209 transitions, 1908 flow [2024-06-20 16:24:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:42,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:42,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:42,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-20 16:24:42,846 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:42,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1901982795, now seen corresponding path program 7 times [2024-06-20 16:24:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:42,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963289] [2024-06-20 16:24:42,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963289] [2024-06-20 16:24:43,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:43,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:43,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918098250] [2024-06-20 16:24:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:43,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:43,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 209 transitions, 1908 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:43,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:43,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:44,215 INFO L124 PetriNetUnfolderBase]: 577/1079 cut-off events. [2024-06-20 16:24:44,215 INFO L125 PetriNetUnfolderBase]: For 143894/143894 co-relation queries the response was YES. [2024-06-20 16:24:44,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5966 conditions, 1079 events. 577/1079 cut-off events. For 143894/143894 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5741 event pairs, 103 based on Foata normal form. 12/1091 useless extension candidates. Maximal degree in co-relation 5835. Up to 988 conditions per place. [2024-06-20 16:24:44,225 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 201 selfloop transitions, 17 changer transitions 7/227 dead transitions. [2024-06-20 16:24:44,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 227 transitions, 2424 flow [2024-06-20 16:24:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-20 16:24:44,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-20 16:24:44,226 INFO L175 Difference]: Start difference. First operand has 270 places, 209 transitions, 1908 flow. Second operand 11 states and 111 transitions. [2024-06-20 16:24:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 227 transitions, 2424 flow [2024-06-20 16:24:44,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 227 transitions, 2204 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:44,525 INFO L231 Difference]: Finished difference. Result has 272 places, 207 transitions, 1713 flow [2024-06-20 16:24:44,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1713, PETRI_PLACES=272, PETRI_TRANSITIONS=207} [2024-06-20 16:24:44,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-20 16:24:44,526 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 207 transitions, 1713 flow [2024-06-20 16:24:44,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:44,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:44,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:44,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-20 16:24:44,527 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:44,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash -217460527, now seen corresponding path program 19 times [2024-06-20 16:24:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886724696] [2024-06-20 16:24:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886724696] [2024-06-20 16:24:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886724696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:45,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156058251] [2024-06-20 16:24:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:45,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:45,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 207 transitions, 1713 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:45,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:45,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:45,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:45,696 INFO L124 PetriNetUnfolderBase]: 555/1038 cut-off events. [2024-06-20 16:24:45,696 INFO L125 PetriNetUnfolderBase]: For 90663/90667 co-relation queries the response was YES. [2024-06-20 16:24:45,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5546 conditions, 1038 events. 555/1038 cut-off events. For 90663/90667 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5536 event pairs, 73 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 5415. Up to 776 conditions per place. [2024-06-20 16:24:45,706 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 70 changer transitions 0/223 dead transitions. [2024-06-20 16:24:45,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 223 transitions, 2226 flow [2024-06-20 16:24:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:24:45,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:24:45,708 INFO L175 Difference]: Start difference. First operand has 272 places, 207 transitions, 1713 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:24:45,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 223 transitions, 2226 flow [2024-06-20 16:24:46,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 223 transitions, 2150 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-20 16:24:46,007 INFO L231 Difference]: Finished difference. Result has 271 places, 208 transitions, 1812 flow [2024-06-20 16:24:46,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1812, PETRI_PLACES=271, PETRI_TRANSITIONS=208} [2024-06-20 16:24:46,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-20 16:24:46,008 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 208 transitions, 1812 flow [2024-06-20 16:24:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:46,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:46,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:46,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-20 16:24:46,009 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:46,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash 319874317, now seen corresponding path program 20 times [2024-06-20 16:24:46,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:46,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064504375] [2024-06-20 16:24:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:46,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:46,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:46,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:46,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064504375] [2024-06-20 16:24:46,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064504375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:46,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:46,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:46,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697612758] [2024-06-20 16:24:46,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:46,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:46,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:46,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:46,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 208 transitions, 1812 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:46,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:46,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:46,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:47,161 INFO L124 PetriNetUnfolderBase]: 552/1033 cut-off events. [2024-06-20 16:24:47,161 INFO L125 PetriNetUnfolderBase]: For 81224/81228 co-relation queries the response was YES. [2024-06-20 16:24:47,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 1033 events. 552/1033 cut-off events. For 81224/81228 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5506 event pairs, 72 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 5298. Up to 745 conditions per place. [2024-06-20 16:24:47,170 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 73 changer transitions 0/223 dead transitions. [2024-06-20 16:24:47,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 223 transitions, 2294 flow [2024-06-20 16:24:47,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-20 16:24:47,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-20 16:24:47,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-20 16:24:47,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-20 16:24:47,171 INFO L175 Difference]: Start difference. First operand has 271 places, 208 transitions, 1812 flow. Second operand 10 states and 109 transitions. [2024-06-20 16:24:47,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 223 transitions, 2294 flow [2024-06-20 16:24:47,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 223 transitions, 2118 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-20 16:24:47,458 INFO L231 Difference]: Finished difference. Result has 273 places, 208 transitions, 1786 flow [2024-06-20 16:24:47,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1786, PETRI_PLACES=273, PETRI_TRANSITIONS=208} [2024-06-20 16:24:47,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-20 16:24:47,458 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 208 transitions, 1786 flow [2024-06-20 16:24:47,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 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) [2024-06-20 16:24:47,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:47,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-20 16:24:47,459 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:47,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1846980889, now seen corresponding path program 1 times [2024-06-20 16:24:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:47,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405806108] [2024-06-20 16:24:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:48,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:48,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:48,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405806108] [2024-06-20 16:24:48,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405806108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:48,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:48,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:24:48,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449489258] [2024-06-20 16:24:48,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:48,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:24:48,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:24:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:24:48,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:48,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 208 transitions, 1786 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:48,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:48,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:48,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:48,909 INFO L124 PetriNetUnfolderBase]: 556/1040 cut-off events. [2024-06-20 16:24:48,909 INFO L125 PetriNetUnfolderBase]: For 82067/82067 co-relation queries the response was YES. [2024-06-20 16:24:48,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 1040 events. 556/1040 cut-off events. For 82067/82067 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5563 event pairs, 76 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 5299. Up to 927 conditions per place. [2024-06-20 16:24:48,917 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 206 selfloop transitions, 22 changer transitions 0/230 dead transitions. [2024-06-20 16:24:48,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 230 transitions, 2314 flow [2024-06-20 16:24:48,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:48,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-20 16:24:48,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-20 16:24:48,918 INFO L175 Difference]: Start difference. First operand has 273 places, 208 transitions, 1786 flow. Second operand 11 states and 109 transitions. [2024-06-20 16:24:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 230 transitions, 2314 flow [2024-06-20 16:24:49,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 230 transitions, 2077 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:49,180 INFO L231 Difference]: Finished difference. Result has 274 places, 209 transitions, 1617 flow [2024-06-20 16:24:49,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1617, PETRI_PLACES=274, PETRI_TRANSITIONS=209} [2024-06-20 16:24:49,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-20 16:24:49,181 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 209 transitions, 1617 flow [2024-06-20 16:24:49,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:49,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:49,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:49,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-20 16:24:49,181 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:49,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1728376727, now seen corresponding path program 2 times [2024-06-20 16:24:49,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:49,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553282971] [2024-06-20 16:24:49,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:49,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553282971] [2024-06-20 16:24:49,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553282971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:49,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:49,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:24:49,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826104200] [2024-06-20 16:24:49,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:49,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:24:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:49,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:24:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:24:50,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:50,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 209 transitions, 1617 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:50,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:50,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:50,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:50,455 INFO L124 PetriNetUnfolderBase]: 567/1061 cut-off events. [2024-06-20 16:24:50,455 INFO L125 PetriNetUnfolderBase]: For 95016/95016 co-relation queries the response was YES. [2024-06-20 16:24:50,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5560 conditions, 1061 events. 567/1061 cut-off events. For 95016/95016 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5698 event pairs, 88 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 5426. Up to 896 conditions per place. [2024-06-20 16:24:50,465 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 37 changer transitions 0/233 dead transitions. [2024-06-20 16:24:50,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 233 transitions, 2397 flow [2024-06-20 16:24:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 16:24:50,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-20 16:24:50,466 INFO L175 Difference]: Start difference. First operand has 274 places, 209 transitions, 1617 flow. Second operand 11 states and 117 transitions. [2024-06-20 16:24:50,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 233 transitions, 2397 flow [2024-06-20 16:24:50,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 233 transitions, 2339 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:50,821 INFO L231 Difference]: Finished difference. Result has 276 places, 211 transitions, 1679 flow [2024-06-20 16:24:50,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1679, PETRI_PLACES=276, PETRI_TRANSITIONS=211} [2024-06-20 16:24:50,821 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-20 16:24:50,821 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 211 transitions, 1679 flow [2024-06-20 16:24:50,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:50,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:50,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:50,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-20 16:24:50,822 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:50,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1468924061, now seen corresponding path program 3 times [2024-06-20 16:24:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823595295] [2024-06-20 16:24:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:50,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823595295] [2024-06-20 16:24:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823595295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:51,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:51,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:24:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803298614] [2024-06-20 16:24:51,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:51,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:24:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:51,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:24:51,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:24:51,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:51,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 211 transitions, 1679 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:51,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:51,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:51,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:52,067 INFO L124 PetriNetUnfolderBase]: 571/1069 cut-off events. [2024-06-20 16:24:52,067 INFO L125 PetriNetUnfolderBase]: For 98134/98134 co-relation queries the response was YES. [2024-06-20 16:24:52,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5649 conditions, 1069 events. 571/1069 cut-off events. For 98134/98134 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5745 event pairs, 92 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 5514. Up to 868 conditions per place. [2024-06-20 16:24:52,078 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 197 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-06-20 16:24:52,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 234 transitions, 2443 flow [2024-06-20 16:24:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-20 16:24:52,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-20 16:24:52,079 INFO L175 Difference]: Start difference. First operand has 276 places, 211 transitions, 1679 flow. Second operand 11 states and 118 transitions. [2024-06-20 16:24:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 234 transitions, 2443 flow [2024-06-20 16:24:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 234 transitions, 2370 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-20 16:24:52,458 INFO L231 Difference]: Finished difference. Result has 280 places, 212 transitions, 1704 flow [2024-06-20 16:24:52,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1704, PETRI_PLACES=280, PETRI_TRANSITIONS=212} [2024-06-20 16:24:52,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-20 16:24:52,458 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 212 transitions, 1704 flow [2024-06-20 16:24:52,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:52,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:52,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:52,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-20 16:24:52,459 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:52,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:52,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1813352033, now seen corresponding path program 4 times [2024-06-20 16:24:52,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:52,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059736149] [2024-06-20 16:24:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:53,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:53,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059736149] [2024-06-20 16:24:53,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059736149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:53,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:53,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:24:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129038177] [2024-06-20 16:24:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:53,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:24:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:24:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:24:53,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:53,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 212 transitions, 1704 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:53,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:53,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:53,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:53,741 INFO L124 PetriNetUnfolderBase]: 575/1077 cut-off events. [2024-06-20 16:24:53,741 INFO L125 PetriNetUnfolderBase]: For 99808/99808 co-relation queries the response was YES. [2024-06-20 16:24:53,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 1077 events. 575/1077 cut-off events. For 99808/99808 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5805 event pairs, 90 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 5585. Up to 932 conditions per place. [2024-06-20 16:24:53,752 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 195 selfloop transitions, 38 changer transitions 0/235 dead transitions. [2024-06-20 16:24:53,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 235 transitions, 2472 flow [2024-06-20 16:24:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-20 16:24:53,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-20 16:24:53,753 INFO L175 Difference]: Start difference. First operand has 280 places, 212 transitions, 1704 flow. Second operand 11 states and 116 transitions. [2024-06-20 16:24:53,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 235 transitions, 2472 flow [2024-06-20 16:24:54,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 235 transitions, 2382 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:54,174 INFO L231 Difference]: Finished difference. Result has 282 places, 213 transitions, 1712 flow [2024-06-20 16:24:54,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1712, PETRI_PLACES=282, PETRI_TRANSITIONS=213} [2024-06-20 16:24:54,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-20 16:24:54,175 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 213 transitions, 1712 flow [2024-06-20 16:24:54,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:54,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:54,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:54,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-20 16:24:54,175 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:54,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1472648711, now seen corresponding path program 5 times [2024-06-20 16:24:54,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:54,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325194792] [2024-06-20 16:24:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:54,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:54,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:54,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325194792] [2024-06-20 16:24:54,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325194792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:54,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:54,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:24:54,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253150750] [2024-06-20 16:24:54,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:54,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:24:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:24:54,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:24:54,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:54,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 213 transitions, 1712 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:54,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:54,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:55,273 INFO L124 PetriNetUnfolderBase]: 572/1072 cut-off events. [2024-06-20 16:24:55,274 INFO L125 PetriNetUnfolderBase]: For 88945/88945 co-relation queries the response was YES. [2024-06-20 16:24:55,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5457 conditions, 1072 events. 572/1072 cut-off events. For 88945/88945 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5789 event pairs, 91 based on Foata normal form. 2/1074 useless extension candidates. Maximal degree in co-relation 5319. Up to 946 conditions per place. [2024-06-20 16:24:55,284 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 194 selfloop transitions, 38 changer transitions 0/234 dead transitions. [2024-06-20 16:24:55,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 234 transitions, 2238 flow [2024-06-20 16:24:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-20 16:24:55,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-20 16:24:55,285 INFO L175 Difference]: Start difference. First operand has 282 places, 213 transitions, 1712 flow. Second operand 11 states and 114 transitions. [2024-06-20 16:24:55,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 234 transitions, 2238 flow [2024-06-20 16:24:55,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 234 transitions, 2137 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 16:24:55,646 INFO L231 Difference]: Finished difference. Result has 284 places, 213 transitions, 1692 flow [2024-06-20 16:24:55,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1692, PETRI_PLACES=284, PETRI_TRANSITIONS=213} [2024-06-20 16:24:55,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-20 16:24:55,647 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 213 transitions, 1692 flow [2024-06-20 16:24:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:24:55,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:55,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:55,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-20 16:24:55,648 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:55,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash 757279811, now seen corresponding path program 1 times [2024-06-20 16:24:55,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:55,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237101824] [2024-06-20 16:24:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:56,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:56,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237101824] [2024-06-20 16:24:56,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237101824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:56,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:56,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:56,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442286145] [2024-06-20 16:24:56,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:56,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:56,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:56,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:56,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:56,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 213 transitions, 1692 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:24:56,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:56,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:56,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:56,983 INFO L124 PetriNetUnfolderBase]: 588/1108 cut-off events. [2024-06-20 16:24:56,983 INFO L125 PetriNetUnfolderBase]: For 140667/140667 co-relation queries the response was YES. [2024-06-20 16:24:56,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5536 conditions, 1108 events. 588/1108 cut-off events. For 140667/140667 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6010 event pairs, 91 based on Foata normal form. 10/1118 useless extension candidates. Maximal degree in co-relation 5397. Up to 827 conditions per place. [2024-06-20 16:24:56,991 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 165 selfloop transitions, 56 changer transitions 13/236 dead transitions. [2024-06-20 16:24:56,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 236 transitions, 2242 flow [2024-06-20 16:24:56,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:56,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:56,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 16:24:56,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-20 16:24:56,992 INFO L175 Difference]: Start difference. First operand has 284 places, 213 transitions, 1692 flow. Second operand 11 states and 122 transitions. [2024-06-20 16:24:56,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 236 transitions, 2242 flow [2024-06-20 16:24:57,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 236 transitions, 2163 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-20 16:24:57,379 INFO L231 Difference]: Finished difference. Result has 285 places, 205 transitions, 1654 flow [2024-06-20 16:24:57,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1654, PETRI_PLACES=285, PETRI_TRANSITIONS=205} [2024-06-20 16:24:57,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-20 16:24:57,379 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 205 transitions, 1654 flow [2024-06-20 16:24:57,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:24:57,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:57,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:57,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-20 16:24:57,380 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:57,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash 594745509, now seen corresponding path program 6 times [2024-06-20 16:24:57,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:57,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786555199] [2024-06-20 16:24:57,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:57,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:58,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:58,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786555199] [2024-06-20 16:24:58,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786555199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:58,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:58,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:24:58,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041952102] [2024-06-20 16:24:58,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:58,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:24:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:24:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:24:58,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:24:58,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 205 transitions, 1654 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:24:58,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:24:58,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:24:58,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:24:58,620 INFO L124 PetriNetUnfolderBase]: 548/1048 cut-off events. [2024-06-20 16:24:58,620 INFO L125 PetriNetUnfolderBase]: For 91928/91928 co-relation queries the response was YES. [2024-06-20 16:24:58,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1048 events. 548/1048 cut-off events. For 91928/91928 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5758 event pairs, 97 based on Foata normal form. 2/1050 useless extension candidates. Maximal degree in co-relation 5205. Up to 829 conditions per place. [2024-06-20 16:24:58,630 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 176 selfloop transitions, 47 changer transitions 0/225 dead transitions. [2024-06-20 16:24:58,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 225 transitions, 2178 flow [2024-06-20 16:24:58,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:24:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:24:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 16:24:58,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-20 16:24:58,631 INFO L175 Difference]: Start difference. First operand has 285 places, 205 transitions, 1654 flow. Second operand 11 states and 120 transitions. [2024-06-20 16:24:58,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 225 transitions, 2178 flow [2024-06-20 16:24:59,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 225 transitions, 2056 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-20 16:24:59,005 INFO L231 Difference]: Finished difference. Result has 283 places, 206 transitions, 1656 flow [2024-06-20 16:24:59,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1656, PETRI_PLACES=283, PETRI_TRANSITIONS=206} [2024-06-20 16:24:59,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-20 16:24:59,006 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 206 transitions, 1656 flow [2024-06-20 16:24:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:24:59,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:24:59,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:24:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-20 16:24:59,006 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:24:59,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:24:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1798206983, now seen corresponding path program 7 times [2024-06-20 16:24:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:24:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777120372] [2024-06-20 16:24:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:24:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:24:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:24:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:24:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:24:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777120372] [2024-06-20 16:24:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777120372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:24:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:24:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:24:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530522232] [2024-06-20 16:24:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:24:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:24:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:24:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:24:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:00,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:00,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 206 transitions, 1656 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:00,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:00,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:00,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:00,395 INFO L124 PetriNetUnfolderBase]: 568/1092 cut-off events. [2024-06-20 16:25:00,396 INFO L125 PetriNetUnfolderBase]: For 156472/156472 co-relation queries the response was YES. [2024-06-20 16:25:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5490 conditions, 1092 events. 568/1092 cut-off events. For 156472/156472 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6047 event pairs, 95 based on Foata normal form. 12/1104 useless extension candidates. Maximal degree in co-relation 5351. Up to 831 conditions per place. [2024-06-20 16:25:00,407 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 166 selfloop transitions, 55 changer transitions 7/230 dead transitions. [2024-06-20 16:25:00,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 230 transitions, 2220 flow [2024-06-20 16:25:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 16:25:00,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-20 16:25:00,408 INFO L175 Difference]: Start difference. First operand has 283 places, 206 transitions, 1656 flow. Second operand 11 states and 122 transitions. [2024-06-20 16:25:00,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 230 transitions, 2220 flow [2024-06-20 16:25:00,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 230 transitions, 2106 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:00,781 INFO L231 Difference]: Finished difference. Result has 285 places, 204 transitions, 1664 flow [2024-06-20 16:25:00,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1664, PETRI_PLACES=285, PETRI_TRANSITIONS=204} [2024-06-20 16:25:00,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-20 16:25:00,782 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 204 transitions, 1664 flow [2024-06-20 16:25:00,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:00,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:00,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-20 16:25:00,783 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:00,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash -380708473, now seen corresponding path program 8 times [2024-06-20 16:25:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:00,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403689639] [2024-06-20 16:25:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:01,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403689639] [2024-06-20 16:25:01,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403689639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:01,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:01,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:01,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875994082] [2024-06-20 16:25:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:01,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:01,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:01,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:01,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:01,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 204 transitions, 1664 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:01,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:01,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:01,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:02,020 INFO L124 PetriNetUnfolderBase]: 548/1052 cut-off events. [2024-06-20 16:25:02,020 INFO L125 PetriNetUnfolderBase]: For 94209/94209 co-relation queries the response was YES. [2024-06-20 16:25:02,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5405 conditions, 1052 events. 548/1052 cut-off events. For 94209/94209 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5823 event pairs, 101 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 5265. Up to 825 conditions per place. [2024-06-20 16:25:02,031 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 45 changer transitions 0/224 dead transitions. [2024-06-20 16:25:02,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 224 transitions, 2188 flow [2024-06-20 16:25:02,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-20 16:25:02,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-20 16:25:02,032 INFO L175 Difference]: Start difference. First operand has 285 places, 204 transitions, 1664 flow. Second operand 11 states and 120 transitions. [2024-06-20 16:25:02,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 224 transitions, 2188 flow [2024-06-20 16:25:02,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 224 transitions, 2010 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-20 16:25:02,432 INFO L231 Difference]: Finished difference. Result has 284 places, 205 transitions, 1610 flow [2024-06-20 16:25:02,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1610, PETRI_PLACES=284, PETRI_TRANSITIONS=205} [2024-06-20 16:25:02,432 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-20 16:25:02,432 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 205 transitions, 1610 flow [2024-06-20 16:25:02,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:02,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:02,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:02,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-20 16:25:02,433 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:02,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:02,433 INFO L85 PathProgramCache]: Analyzing trace with hash 815406931, now seen corresponding path program 9 times [2024-06-20 16:25:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:02,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254849082] [2024-06-20 16:25:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:03,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254849082] [2024-06-20 16:25:03,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254849082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:03,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:03,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:03,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595244381] [2024-06-20 16:25:03,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:03,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:03,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:03,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:03,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:03,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 205 transitions, 1610 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:03,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:03,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:03,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:03,798 INFO L124 PetriNetUnfolderBase]: 552/1060 cut-off events. [2024-06-20 16:25:03,799 INFO L125 PetriNetUnfolderBase]: For 95686/95686 co-relation queries the response was YES. [2024-06-20 16:25:03,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 1060 events. 552/1060 cut-off events. For 95686/95686 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5852 event pairs, 93 based on Foata normal form. 2/1062 useless extension candidates. Maximal degree in co-relation 5201. Up to 847 conditions per place. [2024-06-20 16:25:03,809 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 172 selfloop transitions, 51 changer transitions 0/225 dead transitions. [2024-06-20 16:25:03,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 225 transitions, 2136 flow [2024-06-20 16:25:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:03,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 16:25:03,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-20 16:25:03,816 INFO L175 Difference]: Start difference. First operand has 284 places, 205 transitions, 1610 flow. Second operand 11 states and 117 transitions. [2024-06-20 16:25:03,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 225 transitions, 2136 flow [2024-06-20 16:25:04,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 225 transitions, 2026 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:04,190 INFO L231 Difference]: Finished difference. Result has 286 places, 206 transitions, 1634 flow [2024-06-20 16:25:04,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1634, PETRI_PLACES=286, PETRI_TRANSITIONS=206} [2024-06-20 16:25:04,191 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-20 16:25:04,191 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 206 transitions, 1634 flow [2024-06-20 16:25:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:04,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:04,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:04,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-20 16:25:04,192 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:04,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 594595779, now seen corresponding path program 10 times [2024-06-20 16:25:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844132728] [2024-06-20 16:25:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844132728] [2024-06-20 16:25:05,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844132728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:05,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:05,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660961498] [2024-06-20 16:25:05,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:05,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:05,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 206 transitions, 1634 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:05,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:05,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:05,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:05,411 INFO L124 PetriNetUnfolderBase]: 556/1068 cut-off events. [2024-06-20 16:25:05,411 INFO L125 PetriNetUnfolderBase]: For 97503/97503 co-relation queries the response was YES. [2024-06-20 16:25:05,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5409 conditions, 1068 events. 556/1068 cut-off events. For 97503/97503 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5933 event pairs, 101 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 5269. Up to 819 conditions per place. [2024-06-20 16:25:05,421 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 46 changer transitions 0/226 dead transitions. [2024-06-20 16:25:05,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 226 transitions, 2160 flow [2024-06-20 16:25:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-20 16:25:05,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:25:05,423 INFO L175 Difference]: Start difference. First operand has 286 places, 206 transitions, 1634 flow. Second operand 11 states and 121 transitions. [2024-06-20 16:25:05,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 226 transitions, 2160 flow [2024-06-20 16:25:05,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 226 transitions, 2036 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:05,841 INFO L231 Difference]: Finished difference. Result has 288 places, 207 transitions, 1636 flow [2024-06-20 16:25:05,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1510, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=288, PETRI_TRANSITIONS=207} [2024-06-20 16:25:05,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-20 16:25:05,842 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 207 transitions, 1636 flow [2024-06-20 16:25:05,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:05,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:05,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:05,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-20 16:25:05,842 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:05,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash 616105141, now seen corresponding path program 11 times [2024-06-20 16:25:05,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:05,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565101984] [2024-06-20 16:25:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:05,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:06,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:06,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565101984] [2024-06-20 16:25:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565101984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:06,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:06,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400892663] [2024-06-20 16:25:06,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:06,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:06,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 207 transitions, 1636 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:06,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:06,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:06,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:06,971 INFO L124 PetriNetUnfolderBase]: 560/1076 cut-off events. [2024-06-20 16:25:06,971 INFO L125 PetriNetUnfolderBase]: For 99264/99264 co-relation queries the response was YES. [2024-06-20 16:25:06,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5444 conditions, 1076 events. 560/1076 cut-off events. For 99264/99264 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5986 event pairs, 97 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5303. Up to 863 conditions per place. [2024-06-20 16:25:06,984 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 48 changer transitions 0/227 dead transitions. [2024-06-20 16:25:06,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 227 transitions, 2170 flow [2024-06-20 16:25:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:06,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-20 16:25:06,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-20 16:25:06,986 INFO L175 Difference]: Start difference. First operand has 288 places, 207 transitions, 1636 flow. Second operand 11 states and 118 transitions. [2024-06-20 16:25:06,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 227 transitions, 2170 flow [2024-06-20 16:25:07,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 227 transitions, 2054 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:07,410 INFO L231 Difference]: Finished difference. Result has 290 places, 208 transitions, 1652 flow [2024-06-20 16:25:07,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1652, PETRI_PLACES=290, PETRI_TRANSITIONS=208} [2024-06-20 16:25:07,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-20 16:25:07,412 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 208 transitions, 1652 flow [2024-06-20 16:25:07,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:07,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:07,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-20 16:25:07,412 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:07,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash -384427543, now seen corresponding path program 12 times [2024-06-20 16:25:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104721988] [2024-06-20 16:25:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:07,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:08,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104721988] [2024-06-20 16:25:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104721988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:08,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832299953] [2024-06-20 16:25:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:08,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:08,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 208 transitions, 1652 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:08,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:08,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:08,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:08,571 INFO L124 PetriNetUnfolderBase]: 571/1097 cut-off events. [2024-06-20 16:25:08,571 INFO L125 PetriNetUnfolderBase]: For 115641/115641 co-relation queries the response was YES. [2024-06-20 16:25:08,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5853 conditions, 1097 events. 571/1097 cut-off events. For 115641/115641 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6119 event pairs, 110 based on Foata normal form. 2/1099 useless extension candidates. Maximal degree in co-relation 5711. Up to 755 conditions per place. [2024-06-20 16:25:08,582 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 51 changer transitions 0/230 dead transitions. [2024-06-20 16:25:08,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 230 transitions, 2460 flow [2024-06-20 16:25:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-20 16:25:08,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:25:08,583 INFO L175 Difference]: Start difference. First operand has 290 places, 208 transitions, 1652 flow. Second operand 11 states and 121 transitions. [2024-06-20 16:25:08,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 230 transitions, 2460 flow [2024-06-20 16:25:09,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 230 transitions, 2338 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:09,022 INFO L231 Difference]: Finished difference. Result has 292 places, 210 transitions, 1702 flow [2024-06-20 16:25:09,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1702, PETRI_PLACES=292, PETRI_TRANSITIONS=210} [2024-06-20 16:25:09,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-20 16:25:09,023 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 210 transitions, 1702 flow [2024-06-20 16:25:09,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:09,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:09,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:09,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-20 16:25:09,024 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:09,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1790849753, now seen corresponding path program 13 times [2024-06-20 16:25:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:09,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834125600] [2024-06-20 16:25:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:09,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:09,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834125600] [2024-06-20 16:25:09,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834125600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:09,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:09,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:09,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823830549] [2024-06-20 16:25:09,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:09,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:09,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:09,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:09,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:10,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:10,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 210 transitions, 1702 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:10,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:10,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:10,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:10,382 INFO L124 PetriNetUnfolderBase]: 575/1105 cut-off events. [2024-06-20 16:25:10,382 INFO L125 PetriNetUnfolderBase]: For 117732/117732 co-relation queries the response was YES. [2024-06-20 16:25:10,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5922 conditions, 1105 events. 575/1105 cut-off events. For 117732/117732 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6180 event pairs, 100 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 5779. Up to 872 conditions per place. [2024-06-20 16:25:10,392 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 53 changer transitions 0/230 dead transitions. [2024-06-20 16:25:10,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 230 transitions, 2244 flow [2024-06-20 16:25:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:10,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-20 16:25:10,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-20 16:25:10,394 INFO L175 Difference]: Start difference. First operand has 292 places, 210 transitions, 1702 flow. Second operand 11 states and 118 transitions. [2024-06-20 16:25:10,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 230 transitions, 2244 flow [2024-06-20 16:25:10,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 230 transitions, 2148 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:10,812 INFO L231 Difference]: Finished difference. Result has 296 places, 211 transitions, 1752 flow [2024-06-20 16:25:10,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1752, PETRI_PLACES=296, PETRI_TRANSITIONS=211} [2024-06-20 16:25:10,812 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-20 16:25:10,812 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 211 transitions, 1752 flow [2024-06-20 16:25:10,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:10,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:10,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-20 16:25:10,813 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:10,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash 616099561, now seen corresponding path program 14 times [2024-06-20 16:25:10,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272843408] [2024-06-20 16:25:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:11,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:11,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272843408] [2024-06-20 16:25:11,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272843408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:11,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:11,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:11,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659219611] [2024-06-20 16:25:11,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:11,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:11,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:11,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:11,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:11,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:11,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 211 transitions, 1752 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:11,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:11,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:11,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:12,004 INFO L124 PetriNetUnfolderBase]: 579/1113 cut-off events. [2024-06-20 16:25:12,004 INFO L125 PetriNetUnfolderBase]: For 119485/119485 co-relation queries the response was YES. [2024-06-20 16:25:12,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6037 conditions, 1113 events. 579/1113 cut-off events. For 119485/119485 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6248 event pairs, 102 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 5892. Up to 886 conditions per place. [2024-06-20 16:25:12,015 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 49 changer transitions 0/231 dead transitions. [2024-06-20 16:25:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 231 transitions, 2294 flow [2024-06-20 16:25:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:12,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-20 16:25:12,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-20 16:25:12,017 INFO L175 Difference]: Start difference. First operand has 296 places, 211 transitions, 1752 flow. Second operand 11 states and 119 transitions. [2024-06-20 16:25:12,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 231 transitions, 2294 flow [2024-06-20 16:25:12,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 231 transitions, 2164 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:12,351 INFO L231 Difference]: Finished difference. Result has 298 places, 212 transitions, 1758 flow [2024-06-20 16:25:12,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=298, PETRI_TRANSITIONS=212} [2024-06-20 16:25:12,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-20 16:25:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 212 transitions, 1758 flow [2024-06-20 16:25:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:12,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:12,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:12,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-20 16:25:12,353 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:12,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash 121654383, now seen corresponding path program 2 times [2024-06-20 16:25:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:12,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887422781] [2024-06-20 16:25:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:13,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:13,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887422781] [2024-06-20 16:25:13,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887422781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:13,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:13,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:13,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45567345] [2024-06-20 16:25:13,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:13,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:13,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:13,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:13,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 212 transitions, 1758 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:13,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:13,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:13,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:13,482 INFO L124 PetriNetUnfolderBase]: 606/1174 cut-off events. [2024-06-20 16:25:13,482 INFO L125 PetriNetUnfolderBase]: For 209462/209462 co-relation queries the response was YES. [2024-06-20 16:25:13,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 1174 events. 606/1174 cut-off events. For 209462/209462 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6604 event pairs, 115 based on Foata normal form. 8/1182 useless extension candidates. Maximal degree in co-relation 6752. Up to 844 conditions per place. [2024-06-20 16:25:13,494 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 175 selfloop transitions, 52 changer transitions 8/237 dead transitions. [2024-06-20 16:25:13,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 237 transitions, 2556 flow [2024-06-20 16:25:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:13,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 16:25:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 16:25:13,496 INFO L175 Difference]: Start difference. First operand has 298 places, 212 transitions, 1758 flow. Second operand 11 states and 123 transitions. [2024-06-20 16:25:13,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 237 transitions, 2556 flow [2024-06-20 16:25:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 237 transitions, 2432 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:14,000 INFO L231 Difference]: Finished difference. Result has 300 places, 209 transitions, 1722 flow [2024-06-20 16:25:14,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1722, PETRI_PLACES=300, PETRI_TRANSITIONS=209} [2024-06-20 16:25:14,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-20 16:25:14,001 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 209 transitions, 1722 flow [2024-06-20 16:25:14,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:14,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:14,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-20 16:25:14,001 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:14,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2079592431, now seen corresponding path program 15 times [2024-06-20 16:25:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823266418] [2024-06-20 16:25:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:14,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823266418] [2024-06-20 16:25:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823266418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:14,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:14,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:14,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337465259] [2024-06-20 16:25:14,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:14,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:14,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:14,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 209 transitions, 1722 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:14,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:14,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:14,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:15,331 INFO L124 PetriNetUnfolderBase]: 584/1128 cut-off events. [2024-06-20 16:25:15,331 INFO L125 PetriNetUnfolderBase]: For 152897/152897 co-relation queries the response was YES. [2024-06-20 16:25:15,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6459 conditions, 1128 events. 584/1128 cut-off events. For 152897/152897 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6299 event pairs, 116 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 6312. Up to 856 conditions per place. [2024-06-20 16:25:15,340 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 174 selfloop transitions, 52 changer transitions 0/228 dead transitions. [2024-06-20 16:25:15,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 228 transitions, 2224 flow [2024-06-20 16:25:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-20 16:25:15,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-20 16:25:15,341 INFO L175 Difference]: Start difference. First operand has 300 places, 209 transitions, 1722 flow. Second operand 11 states and 117 transitions. [2024-06-20 16:25:15,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 228 transitions, 2224 flow [2024-06-20 16:25:15,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 228 transitions, 2106 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:15,792 INFO L231 Difference]: Finished difference. Result has 297 places, 209 transitions, 1712 flow [2024-06-20 16:25:15,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1712, PETRI_PLACES=297, PETRI_TRANSITIONS=209} [2024-06-20 16:25:15,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-20 16:25:15,792 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 209 transitions, 1712 flow [2024-06-20 16:25:15,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:15,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:15,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:15,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-20 16:25:15,793 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:15,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1848665335, now seen corresponding path program 16 times [2024-06-20 16:25:15,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:15,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487179840] [2024-06-20 16:25:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:15,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:16,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:16,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487179840] [2024-06-20 16:25:16,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487179840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:16,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:16,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:16,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489683230] [2024-06-20 16:25:16,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:16,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:16,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:16,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:16,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 209 transitions, 1712 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:16,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:16,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:16,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:17,125 INFO L124 PetriNetUnfolderBase]: 588/1137 cut-off events. [2024-06-20 16:25:17,125 INFO L125 PetriNetUnfolderBase]: For 148169/148173 co-relation queries the response was YES. [2024-06-20 16:25:17,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 1137 events. 588/1137 cut-off events. For 148169/148173 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6331 event pairs, 117 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 6347. Up to 700 conditions per place. [2024-06-20 16:25:17,136 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 131 selfloop transitions, 94 changer transitions 0/227 dead transitions. [2024-06-20 16:25:17,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 227 transitions, 2244 flow [2024-06-20 16:25:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-20 16:25:17,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-20 16:25:17,138 INFO L175 Difference]: Start difference. First operand has 297 places, 209 transitions, 1712 flow. Second operand 11 states and 122 transitions. [2024-06-20 16:25:17,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 227 transitions, 2244 flow [2024-06-20 16:25:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 227 transitions, 2106 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:17,577 INFO L231 Difference]: Finished difference. Result has 298 places, 210 transitions, 1802 flow [2024-06-20 16:25:17,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1802, PETRI_PLACES=298, PETRI_TRANSITIONS=210} [2024-06-20 16:25:17,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-20 16:25:17,577 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 210 transitions, 1802 flow [2024-06-20 16:25:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:17,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:17,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:17,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-20 16:25:17,578 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:17,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 17 times [2024-06-20 16:25:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:17,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059845321] [2024-06-20 16:25:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:17,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059845321] [2024-06-20 16:25:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059845321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:18,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:18,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:18,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50299235] [2024-06-20 16:25:18,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:18,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:18,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:18,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:18,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 210 transitions, 1802 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:18,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:18,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:18,882 INFO L124 PetriNetUnfolderBase]: 592/1145 cut-off events. [2024-06-20 16:25:18,882 INFO L125 PetriNetUnfolderBase]: For 151324/151328 co-relation queries the response was YES. [2024-06-20 16:25:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1145 events. 592/1145 cut-off events. For 151324/151328 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6385 event pairs, 113 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 6492. Up to 694 conditions per place. [2024-06-20 16:25:18,894 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 131 selfloop transitions, 95 changer transitions 0/228 dead transitions. [2024-06-20 16:25:18,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 228 transitions, 2336 flow [2024-06-20 16:25:18,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:18,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 16:25:18,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 16:25:18,895 INFO L175 Difference]: Start difference. First operand has 298 places, 210 transitions, 1802 flow. Second operand 11 states and 123 transitions. [2024-06-20 16:25:18,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 228 transitions, 2336 flow [2024-06-20 16:25:19,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 228 transitions, 2118 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:19,399 INFO L231 Difference]: Finished difference. Result has 300 places, 211 transitions, 1816 flow [2024-06-20 16:25:19,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1816, PETRI_PLACES=300, PETRI_TRANSITIONS=211} [2024-06-20 16:25:19,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-20 16:25:19,400 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 211 transitions, 1816 flow [2024-06-20 16:25:19,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:19,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:19,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:19,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-20 16:25:19,400 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:19,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash -840321981, now seen corresponding path program 18 times [2024-06-20 16:25:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:19,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425874224] [2024-06-20 16:25:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:20,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:20,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425874224] [2024-06-20 16:25:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425874224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:20,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:20,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958665365] [2024-06-20 16:25:20,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:20,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:20,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:20,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 211 transitions, 1816 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:20,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:20,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:20,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:20,894 INFO L124 PetriNetUnfolderBase]: 596/1153 cut-off events. [2024-06-20 16:25:20,895 INFO L125 PetriNetUnfolderBase]: For 153955/153959 co-relation queries the response was YES. [2024-06-20 16:25:20,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 1153 events. 596/1153 cut-off events. For 153955/153959 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6486 event pairs, 133 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 6550. Up to 716 conditions per place. [2024-06-20 16:25:20,906 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 135 selfloop transitions, 92 changer transitions 0/229 dead transitions. [2024-06-20 16:25:20,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 229 transitions, 2356 flow [2024-06-20 16:25:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 16:25:20,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 16:25:20,907 INFO L175 Difference]: Start difference. First operand has 300 places, 211 transitions, 1816 flow. Second operand 11 states and 123 transitions. [2024-06-20 16:25:20,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 229 transitions, 2356 flow [2024-06-20 16:25:21,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 229 transitions, 2134 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:21,339 INFO L231 Difference]: Finished difference. Result has 302 places, 212 transitions, 1822 flow [2024-06-20 16:25:21,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1822, PETRI_PLACES=302, PETRI_TRANSITIONS=212} [2024-06-20 16:25:21,339 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-20 16:25:21,340 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 212 transitions, 1822 flow [2024-06-20 16:25:21,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:21,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:21,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-20 16:25:21,340 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:21,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -193316097, now seen corresponding path program 19 times [2024-06-20 16:25:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:21,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021361188] [2024-06-20 16:25:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:22,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021361188] [2024-06-20 16:25:22,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021361188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:22,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:22,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:22,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575935438] [2024-06-20 16:25:22,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:22,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:22,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:22,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:22,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:22,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:22,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 212 transitions, 1822 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:22,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:22,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:22,691 INFO L124 PetriNetUnfolderBase]: 600/1161 cut-off events. [2024-06-20 16:25:22,691 INFO L125 PetriNetUnfolderBase]: For 156662/156666 co-relation queries the response was YES. [2024-06-20 16:25:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 1161 events. 600/1161 cut-off events. For 156662/156666 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6510 event pairs, 107 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6592. Up to 724 conditions per place. [2024-06-20 16:25:22,703 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 129 selfloop transitions, 99 changer transitions 0/230 dead transitions. [2024-06-20 16:25:22,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 230 transitions, 2366 flow [2024-06-20 16:25:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-20 16:25:22,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-20 16:25:22,704 INFO L175 Difference]: Start difference. First operand has 302 places, 212 transitions, 1822 flow. Second operand 11 states and 121 transitions. [2024-06-20 16:25:22,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 230 transitions, 2366 flow [2024-06-20 16:25:23,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 230 transitions, 2148 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:23,257 INFO L231 Difference]: Finished difference. Result has 304 places, 213 transitions, 1848 flow [2024-06-20 16:25:23,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1848, PETRI_PLACES=304, PETRI_TRANSITIONS=213} [2024-06-20 16:25:23,258 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-20 16:25:23,258 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 213 transitions, 1848 flow [2024-06-20 16:25:23,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:23,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:23,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:23,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-20 16:25:23,259 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:23,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:23,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1099501175, now seen corresponding path program 20 times [2024-06-20 16:25:23,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:23,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032872015] [2024-06-20 16:25:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:23,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032872015] [2024-06-20 16:25:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032872015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:24,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:24,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:24,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461159495] [2024-06-20 16:25:24,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:24,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:24,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:24,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:24,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:24,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 213 transitions, 1848 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:24,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:24,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:24,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:24,670 INFO L124 PetriNetUnfolderBase]: 640/1241 cut-off events. [2024-06-20 16:25:24,671 INFO L125 PetriNetUnfolderBase]: For 252541/252545 co-relation queries the response was YES. [2024-06-20 16:25:24,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8649 conditions, 1241 events. 640/1241 cut-off events. For 252541/252545 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7008 event pairs, 125 based on Foata normal form. 2/1243 useless extension candidates. Maximal degree in co-relation 8500. Up to 708 conditions per place. [2024-06-20 16:25:24,723 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 101 changer transitions 0/237 dead transitions. [2024-06-20 16:25:24,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 237 transitions, 2728 flow [2024-06-20 16:25:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:24,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 16:25:24,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 16:25:24,724 INFO L175 Difference]: Start difference. First operand has 304 places, 213 transitions, 1848 flow. Second operand 11 states and 127 transitions. [2024-06-20 16:25:24,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 237 transitions, 2728 flow [2024-06-20 16:25:25,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 237 transitions, 2494 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:25,460 INFO L231 Difference]: Finished difference. Result has 306 places, 215 transitions, 1906 flow [2024-06-20 16:25:25,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1906, PETRI_PLACES=306, PETRI_TRANSITIONS=215} [2024-06-20 16:25:25,461 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-20 16:25:25,461 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 215 transitions, 1906 flow [2024-06-20 16:25:25,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:25,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:25,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-20 16:25:25,461 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:25,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash -783799003, now seen corresponding path program 21 times [2024-06-20 16:25:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855496359] [2024-06-20 16:25:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:25,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:26,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855496359] [2024-06-20 16:25:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855496359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161623254] [2024-06-20 16:25:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:26,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:26,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 215 transitions, 1906 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:26,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:26,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:26,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:26,877 INFO L124 PetriNetUnfolderBase]: 680/1321 cut-off events. [2024-06-20 16:25:26,877 INFO L125 PetriNetUnfolderBase]: For 351904/351908 co-relation queries the response was YES. [2024-06-20 16:25:26,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10568 conditions, 1321 events. 680/1321 cut-off events. For 351904/351908 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7545 event pairs, 149 based on Foata normal form. 2/1323 useless extension candidates. Maximal degree in co-relation 10418. Up to 660 conditions per place. [2024-06-20 16:25:26,893 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 100 changer transitions 0/239 dead transitions. [2024-06-20 16:25:26,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 239 transitions, 2794 flow [2024-06-20 16:25:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 16:25:26,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 16:25:26,894 INFO L175 Difference]: Start difference. First operand has 306 places, 215 transitions, 1906 flow. Second operand 11 states and 128 transitions. [2024-06-20 16:25:26,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 239 transitions, 2794 flow [2024-06-20 16:25:27,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 239 transitions, 2556 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-20 16:25:27,942 INFO L231 Difference]: Finished difference. Result has 309 places, 217 transitions, 1962 flow [2024-06-20 16:25:27,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1962, PETRI_PLACES=309, PETRI_TRANSITIONS=217} [2024-06-20 16:25:27,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-20 16:25:27,943 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 217 transitions, 1962 flow [2024-06-20 16:25:27,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:27,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:27,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:27,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-20 16:25:27,944 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:27,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -840327561, now seen corresponding path program 22 times [2024-06-20 16:25:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265989614] [2024-06-20 16:25:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:28,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:28,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265989614] [2024-06-20 16:25:28,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265989614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:28,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:28,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481200196] [2024-06-20 16:25:28,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:28,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:28,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:29,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:29,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 217 transitions, 1962 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:29,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:29,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:29,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:29,444 INFO L124 PetriNetUnfolderBase]: 684/1329 cut-off events. [2024-06-20 16:25:29,444 INFO L125 PetriNetUnfolderBase]: For 357310/357314 co-relation queries the response was YES. [2024-06-20 16:25:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10647 conditions, 1329 events. 684/1329 cut-off events. For 357310/357314 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7624 event pairs, 165 based on Foata normal form. 2/1331 useless extension candidates. Maximal degree in co-relation 10496. Up to 878 conditions per place. [2024-06-20 16:25:29,457 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 93 changer transitions 0/235 dead transitions. [2024-06-20 16:25:29,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 235 transitions, 2518 flow [2024-06-20 16:25:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-20 16:25:29,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-20 16:25:29,459 INFO L175 Difference]: Start difference. First operand has 309 places, 217 transitions, 1962 flow. Second operand 11 states and 124 transitions. [2024-06-20 16:25:29,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 235 transitions, 2518 flow [2024-06-20 16:25:30,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 235 transitions, 2344 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-20 16:25:30,507 INFO L231 Difference]: Finished difference. Result has 313 places, 218 transitions, 2024 flow [2024-06-20 16:25:30,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2024, PETRI_PLACES=313, PETRI_TRANSITIONS=218} [2024-06-20 16:25:30,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-20 16:25:30,508 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 218 transitions, 2024 flow [2024-06-20 16:25:30,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:30,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:30,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:30,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-20 16:25:30,509 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:30,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash -840471711, now seen corresponding path program 23 times [2024-06-20 16:25:30,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:30,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111005341] [2024-06-20 16:25:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111005341] [2024-06-20 16:25:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111005341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:31,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215241677] [2024-06-20 16:25:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:31,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:31,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 218 transitions, 2024 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:31,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:31,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:31,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:31,867 INFO L124 PetriNetUnfolderBase]: 688/1337 cut-off events. [2024-06-20 16:25:31,867 INFO L125 PetriNetUnfolderBase]: For 362906/362910 co-relation queries the response was YES. [2024-06-20 16:25:31,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10828 conditions, 1337 events. 688/1337 cut-off events. For 362906/362910 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7661 event pairs, 163 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 10675. Up to 864 conditions per place. [2024-06-20 16:25:31,883 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 94 changer transitions 0/236 dead transitions. [2024-06-20 16:25:31,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 236 transitions, 2580 flow [2024-06-20 16:25:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:31,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 16:25:31,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 16:25:31,884 INFO L175 Difference]: Start difference. First operand has 313 places, 218 transitions, 2024 flow. Second operand 11 states and 125 transitions. [2024-06-20 16:25:31,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 236 transitions, 2580 flow [2024-06-20 16:25:33,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 236 transitions, 2356 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:33,032 INFO L231 Difference]: Finished difference. Result has 315 places, 219 transitions, 2038 flow [2024-06-20 16:25:33,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2038, PETRI_PLACES=315, PETRI_TRANSITIONS=219} [2024-06-20 16:25:33,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-20 16:25:33,044 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 219 transitions, 2038 flow [2024-06-20 16:25:33,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:33,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:33,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:33,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-20 16:25:33,049 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:33,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1928082613, now seen corresponding path program 24 times [2024-06-20 16:25:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:33,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651758372] [2024-06-20 16:25:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:33,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:33,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:33,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651758372] [2024-06-20 16:25:33,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651758372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:33,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:33,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:33,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680778928] [2024-06-20 16:25:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:33,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:33,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:34,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:34,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 219 transitions, 2038 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:34,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:34,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:34,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:34,584 INFO L124 PetriNetUnfolderBase]: 692/1345 cut-off events. [2024-06-20 16:25:34,584 INFO L125 PetriNetUnfolderBase]: For 368791/368795 co-relation queries the response was YES. [2024-06-20 16:25:34,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 1345 events. 692/1345 cut-off events. For 368791/368795 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7738 event pairs, 165 based on Foata normal form. 2/1347 useless extension candidates. Maximal degree in co-relation 10759. Up to 908 conditions per place. [2024-06-20 16:25:34,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 82 changer transitions 0/238 dead transitions. [2024-06-20 16:25:34,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 238 transitions, 2608 flow [2024-06-20 16:25:34,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:34,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-20 16:25:34,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-20 16:25:34,600 INFO L175 Difference]: Start difference. First operand has 315 places, 219 transitions, 2038 flow. Second operand 11 states and 128 transitions. [2024-06-20 16:25:34,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 238 transitions, 2608 flow [2024-06-20 16:25:35,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 238 transitions, 2380 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:35,635 INFO L231 Difference]: Finished difference. Result has 317 places, 220 transitions, 2026 flow [2024-06-20 16:25:35,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2026, PETRI_PLACES=317, PETRI_TRANSITIONS=220} [2024-06-20 16:25:35,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-20 16:25:35,635 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 220 transitions, 2026 flow [2024-06-20 16:25:35,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:35,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:35,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:35,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-20 16:25:35,636 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:35,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:35,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1928077033, now seen corresponding path program 25 times [2024-06-20 16:25:35,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510819212] [2024-06-20 16:25:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510819212] [2024-06-20 16:25:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510819212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:36,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:36,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:36,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465768324] [2024-06-20 16:25:36,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:36,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:36,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:36,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:36,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 220 transitions, 2026 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:36,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:36,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:36,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:36,980 INFO L124 PetriNetUnfolderBase]: 696/1353 cut-off events. [2024-06-20 16:25:36,980 INFO L125 PetriNetUnfolderBase]: For 374494/374498 co-relation queries the response was YES. [2024-06-20 16:25:36,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10966 conditions, 1353 events. 696/1353 cut-off events. For 374494/374498 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7778 event pairs, 167 based on Foata normal form. 2/1355 useless extension candidates. Maximal degree in co-relation 10811. Up to 902 conditions per place. [2024-06-20 16:25:36,997 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 83 changer transitions 0/239 dead transitions. [2024-06-20 16:25:36,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 239 transitions, 2598 flow [2024-06-20 16:25:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:25:36,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:25:36,998 INFO L175 Difference]: Start difference. First operand has 317 places, 220 transitions, 2026 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:25:36,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 239 transitions, 2598 flow [2024-06-20 16:25:38,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 239 transitions, 2392 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:38,327 INFO L231 Difference]: Finished difference. Result has 319 places, 221 transitions, 2040 flow [2024-06-20 16:25:38,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2040, PETRI_PLACES=319, PETRI_TRANSITIONS=221} [2024-06-20 16:25:38,328 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-20 16:25:38,328 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 221 transitions, 2040 flow [2024-06-20 16:25:38,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:38,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:38,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:38,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-20 16:25:38,328 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:38,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash 927549929, now seen corresponding path program 26 times [2024-06-20 16:25:38,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:38,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753021123] [2024-06-20 16:25:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:39,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:39,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:39,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753021123] [2024-06-20 16:25:39,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753021123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261471737] [2024-06-20 16:25:39,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:39,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:39,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:39,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:39,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 221 transitions, 2040 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:39,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:39,712 INFO L124 PetriNetUnfolderBase]: 729/1420 cut-off events. [2024-06-20 16:25:39,713 INFO L125 PetriNetUnfolderBase]: For 465167/465171 co-relation queries the response was YES. [2024-06-20 16:25:39,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12537 conditions, 1420 events. 729/1420 cut-off events. For 465167/465171 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8237 event pairs, 192 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 12381. Up to 563 conditions per place. [2024-06-20 16:25:39,729 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 137 selfloop transitions, 105 changer transitions 0/244 dead transitions. [2024-06-20 16:25:39,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 244 transitions, 2908 flow [2024-06-20 16:25:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:39,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:39,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:25:39,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:25:39,731 INFO L175 Difference]: Start difference. First operand has 319 places, 221 transitions, 2040 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:25:39,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 244 transitions, 2908 flow [2024-06-20 16:25:41,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 244 transitions, 2698 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:41,298 INFO L231 Difference]: Finished difference. Result has 321 places, 222 transitions, 2094 flow [2024-06-20 16:25:41,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=321, PETRI_TRANSITIONS=222} [2024-06-20 16:25:41,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-20 16:25:41,299 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 222 transitions, 2094 flow [2024-06-20 16:25:41,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:41,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:41,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:41,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-20 16:25:41,300 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:41,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1416512331, now seen corresponding path program 27 times [2024-06-20 16:25:41,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:41,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230406618] [2024-06-20 16:25:41,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:41,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:42,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:42,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230406618] [2024-06-20 16:25:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230406618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:42,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436902030] [2024-06-20 16:25:42,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:42,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:42,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:42,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:42,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:42,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 222 transitions, 2094 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:42,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:42,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:42,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:42,620 INFO L124 PetriNetUnfolderBase]: 749/1464 cut-off events. [2024-06-20 16:25:42,620 INFO L125 PetriNetUnfolderBase]: For 558232/558236 co-relation queries the response was YES. [2024-06-20 16:25:42,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12788 conditions, 1464 events. 749/1464 cut-off events. For 558232/558236 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8606 event pairs, 170 based on Foata normal form. 12/1476 useless extension candidates. Maximal degree in co-relation 12631. Up to 985 conditions per place. [2024-06-20 16:25:42,638 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 143 selfloop transitions, 93 changer transitions 7/245 dead transitions. [2024-06-20 16:25:42,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 245 transitions, 2702 flow [2024-06-20 16:25:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-20 16:25:42,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-20 16:25:42,639 INFO L175 Difference]: Start difference. First operand has 321 places, 222 transitions, 2094 flow. Second operand 11 states and 129 transitions. [2024-06-20 16:25:42,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 245 transitions, 2702 flow [2024-06-20 16:25:44,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 245 transitions, 2444 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:44,048 INFO L231 Difference]: Finished difference. Result has 322 places, 220 transitions, 2047 flow [2024-06-20 16:25:44,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2047, PETRI_PLACES=322, PETRI_TRANSITIONS=220} [2024-06-20 16:25:44,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-20 16:25:44,054 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 220 transitions, 2047 flow [2024-06-20 16:25:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:44,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:44,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-20 16:25:44,055 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:44,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:44,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1927932883, now seen corresponding path program 28 times [2024-06-20 16:25:44,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:44,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76499575] [2024-06-20 16:25:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:44,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:45,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76499575] [2024-06-20 16:25:45,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76499575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:45,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:45,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:45,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345054153] [2024-06-20 16:25:45,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:45,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:45,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:45,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:45,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:45,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 220 transitions, 2047 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:45,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:45,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:45,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:45,493 INFO L124 PetriNetUnfolderBase]: 729/1424 cut-off events. [2024-06-20 16:25:45,493 INFO L125 PetriNetUnfolderBase]: For 479226/479230 co-relation queries the response was YES. [2024-06-20 16:25:45,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12583 conditions, 1424 events. 729/1424 cut-off events. For 479226/479230 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8333 event pairs, 188 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 12427. Up to 871 conditions per place. [2024-06-20 16:25:45,507 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 83 changer transitions 0/244 dead transitions. [2024-06-20 16:25:45,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 244 transitions, 2922 flow [2024-06-20 16:25:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-20 16:25:45,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-20 16:25:45,508 INFO L175 Difference]: Start difference. First operand has 322 places, 220 transitions, 2047 flow. Second operand 11 states and 134 transitions. [2024-06-20 16:25:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 244 transitions, 2922 flow [2024-06-20 16:25:46,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 244 transitions, 2699 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:46,893 INFO L231 Difference]: Finished difference. Result has 323 places, 221 transitions, 2041 flow [2024-06-20 16:25:46,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2041, PETRI_PLACES=323, PETRI_TRANSITIONS=221} [2024-06-20 16:25:46,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-20 16:25:46,893 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 221 transitions, 2041 flow [2024-06-20 16:25:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:46,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:46,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:46,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-20 16:25:46,894 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:46,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2127384403, now seen corresponding path program 29 times [2024-06-20 16:25:46,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:46,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45842090] [2024-06-20 16:25:46,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:46,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:47,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:47,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:47,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45842090] [2024-06-20 16:25:47,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45842090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:47,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:47,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:47,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473649316] [2024-06-20 16:25:47,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:47,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:47,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:47,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:47,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:47,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:47,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 221 transitions, 2041 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:47,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:47,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:47,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:48,405 INFO L124 PetriNetUnfolderBase]: 733/1432 cut-off events. [2024-06-20 16:25:48,405 INFO L125 PetriNetUnfolderBase]: For 486838/486842 co-relation queries the response was YES. [2024-06-20 16:25:48,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12648 conditions, 1432 events. 733/1432 cut-off events. For 486838/486842 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8393 event pairs, 188 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 12491. Up to 1001 conditions per place. [2024-06-20 16:25:48,421 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 157 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-06-20 16:25:48,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 240 transitions, 2618 flow [2024-06-20 16:25:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:48,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-20 16:25:48,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-20 16:25:48,422 INFO L175 Difference]: Start difference. First operand has 323 places, 221 transitions, 2041 flow. Second operand 11 states and 127 transitions. [2024-06-20 16:25:48,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 240 transitions, 2618 flow [2024-06-20 16:25:49,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 240 transitions, 2324 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-20 16:25:49,561 INFO L231 Difference]: Finished difference. Result has 324 places, 222 transitions, 1964 flow [2024-06-20 16:25:49,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=324, PETRI_TRANSITIONS=222} [2024-06-20 16:25:49,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-20 16:25:49,562 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 222 transitions, 1964 flow [2024-06-20 16:25:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:49,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:49,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:49,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-20 16:25:49,563 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:49,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1416235625, now seen corresponding path program 3 times [2024-06-20 16:25:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:49,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61626627] [2024-06-20 16:25:49,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:49,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:50,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:50,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61626627] [2024-06-20 16:25:50,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61626627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:50,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:50,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:25:50,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34883111] [2024-06-20 16:25:50,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:25:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:50,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:25:50,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:25:50,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:50,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 222 transitions, 1964 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:50,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:50,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:50,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:50,806 INFO L124 PetriNetUnfolderBase]: 760/1493 cut-off events. [2024-06-20 16:25:50,806 INFO L125 PetriNetUnfolderBase]: For 600874/600878 co-relation queries the response was YES. [2024-06-20 16:25:50,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13413 conditions, 1493 events. 760/1493 cut-off events. For 600874/600878 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8849 event pairs, 181 based on Foata normal form. 8/1501 useless extension candidates. Maximal degree in co-relation 13256. Up to 977 conditions per place. [2024-06-20 16:25:50,820 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 90 changer transitions 8/246 dead transitions. [2024-06-20 16:25:50,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 246 transitions, 2804 flow [2024-06-20 16:25:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:50,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-20 16:25:50,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-20 16:25:50,821 INFO L175 Difference]: Start difference. First operand has 324 places, 222 transitions, 1964 flow. Second operand 11 states and 130 transitions. [2024-06-20 16:25:50,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 246 transitions, 2804 flow [2024-06-20 16:25:52,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 246 transitions, 2602 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:52,313 INFO L231 Difference]: Finished difference. Result has 326 places, 219 transitions, 1926 flow [2024-06-20 16:25:52,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1926, PETRI_PLACES=326, PETRI_TRANSITIONS=219} [2024-06-20 16:25:52,314 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-20 16:25:52,314 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 219 transitions, 1926 flow [2024-06-20 16:25:52,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:25:52,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:52,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:52,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-20 16:25:52,314 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:52,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2127378823, now seen corresponding path program 30 times [2024-06-20 16:25:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:52,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112076261] [2024-06-20 16:25:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:53,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:53,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112076261] [2024-06-20 16:25:53,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112076261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:53,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:53,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:53,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380205095] [2024-06-20 16:25:53,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:53,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:53,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:53,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 219 transitions, 1926 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:53,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:53,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:53,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:53,918 INFO L124 PetriNetUnfolderBase]: 745/1460 cut-off events. [2024-06-20 16:25:53,918 INFO L125 PetriNetUnfolderBase]: For 555394/555398 co-relation queries the response was YES. [2024-06-20 16:25:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13392 conditions, 1460 events. 745/1460 cut-off events. For 555394/555398 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8583 event pairs, 201 based on Foata normal form. 2/1462 useless extension candidates. Maximal degree in co-relation 13234. Up to 944 conditions per place. [2024-06-20 16:25:53,936 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 82 changer transitions 0/243 dead transitions. [2024-06-20 16:25:53,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 243 transitions, 2807 flow [2024-06-20 16:25:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:53,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:53,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-20 16:25:53,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-20 16:25:53,951 INFO L175 Difference]: Start difference. First operand has 326 places, 219 transitions, 1926 flow. Second operand 11 states and 133 transitions. [2024-06-20 16:25:53,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 243 transitions, 2807 flow [2024-06-20 16:25:55,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 243 transitions, 2617 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 16:25:55,439 INFO L231 Difference]: Finished difference. Result has 323 places, 220 transitions, 1957 flow [2024-06-20 16:25:55,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=323, PETRI_TRANSITIONS=220} [2024-06-20 16:25:55,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-20 16:25:55,440 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 220 transitions, 1957 flow [2024-06-20 16:25:55,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:55,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:55,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:55,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-20 16:25:55,441 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:55,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash 2134736053, now seen corresponding path program 31 times [2024-06-20 16:25:55,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:55,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013476433] [2024-06-20 16:25:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:56,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:56,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013476433] [2024-06-20 16:25:56,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013476433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:56,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:56,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846757233] [2024-06-20 16:25:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:56,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:56,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:56,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:56,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 220 transitions, 1957 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:56,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:56,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:56,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:56,957 INFO L124 PetriNetUnfolderBase]: 729/1432 cut-off events. [2024-06-20 16:25:56,957 INFO L125 PetriNetUnfolderBase]: For 521508/521512 co-relation queries the response was YES. [2024-06-20 16:25:56,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11530 conditions, 1432 events. 729/1432 cut-off events. For 521508/521512 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8409 event pairs, 191 based on Foata normal form. 12/1444 useless extension candidates. Maximal degree in co-relation 11374. Up to 962 conditions per place. [2024-06-20 16:25:56,971 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 79 changer transitions 7/242 dead transitions. [2024-06-20 16:25:56,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 242 transitions, 2517 flow [2024-06-20 16:25:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-20 16:25:56,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-20 16:25:56,972 INFO L175 Difference]: Start difference. First operand has 323 places, 220 transitions, 1957 flow. Second operand 11 states and 131 transitions. [2024-06-20 16:25:56,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 242 transitions, 2517 flow [2024-06-20 16:25:58,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 242 transitions, 2265 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-20 16:25:58,183 INFO L231 Difference]: Finished difference. Result has 325 places, 217 transitions, 1846 flow [2024-06-20 16:25:58,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1705, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1846, PETRI_PLACES=325, PETRI_TRANSITIONS=217} [2024-06-20 16:25:58,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-20 16:25:58,183 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 217 transitions, 1846 flow [2024-06-20 16:25:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:58,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:25:58,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:25:58,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-20 16:25:58,184 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:25:58,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:25:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1168350953, now seen corresponding path program 32 times [2024-06-20 16:25:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:25:58,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791981644] [2024-06-20 16:25:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:25:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:25:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:25:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:25:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:25:59,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791981644] [2024-06-20 16:25:59,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791981644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:25:59,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:25:59,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:25:59,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429487292] [2024-06-20 16:25:59,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:25:59,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:25:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:25:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:25:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:25:59,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:25:59,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 217 transitions, 1846 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:25:59,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:25:59,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:25:59,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:25:59,616 INFO L124 PetriNetUnfolderBase]: 689/1355 cut-off events. [2024-06-20 16:25:59,616 INFO L125 PetriNetUnfolderBase]: For 418997/418997 co-relation queries the response was YES. [2024-06-20 16:25:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9500 conditions, 1355 events. 689/1355 cut-off events. For 418997/418997 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7905 event pairs, 189 based on Foata normal form. 12/1367 useless extension candidates. Maximal degree in co-relation 9343. Up to 1258 conditions per place. [2024-06-20 16:25:59,631 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 18 changer transitions 8/234 dead transitions. [2024-06-20 16:25:59,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 234 transitions, 2370 flow [2024-06-20 16:25:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:25:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:25:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-20 16:25:59,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-20 16:25:59,632 INFO L175 Difference]: Start difference. First operand has 325 places, 217 transitions, 1846 flow. Second operand 11 states and 110 transitions. [2024-06-20 16:25:59,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 234 transitions, 2370 flow [2024-06-20 16:26:00,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 234 transitions, 2156 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:00,592 INFO L231 Difference]: Finished difference. Result has 324 places, 213 transitions, 1646 flow [2024-06-20 16:26:00,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1646, PETRI_PLACES=324, PETRI_TRANSITIONS=213} [2024-06-20 16:26:00,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-20 16:26:00,593 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 213 transitions, 1646 flow [2024-06-20 16:26:00,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:00,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:00,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:00,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-20 16:26:00,593 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:00,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2135012759, now seen corresponding path program 4 times [2024-06-20 16:26:00,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:00,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174640315] [2024-06-20 16:26:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:01,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:01,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174640315] [2024-06-20 16:26:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174640315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:01,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:01,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:26:01,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893623023] [2024-06-20 16:26:01,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:01,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:26:01,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:26:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:26:01,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:01,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 213 transitions, 1646 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:01,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:01,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:01,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:01,842 INFO L124 PetriNetUnfolderBase]: 690/1367 cut-off events. [2024-06-20 16:26:01,842 INFO L125 PetriNetUnfolderBase]: For 442538/442542 co-relation queries the response was YES. [2024-06-20 16:26:01,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10109 conditions, 1367 events. 690/1367 cut-off events. For 442538/442542 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8016 event pairs, 186 based on Foata normal form. 8/1375 useless extension candidates. Maximal degree in co-relation 9952. Up to 848 conditions per place. [2024-06-20 16:26:01,857 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 74 changer transitions 8/237 dead transitions. [2024-06-20 16:26:01,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 237 transitions, 2470 flow [2024-06-20 16:26:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-20 16:26:01,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-20 16:26:01,858 INFO L175 Difference]: Start difference. First operand has 324 places, 213 transitions, 1646 flow. Second operand 11 states and 132 transitions. [2024-06-20 16:26:01,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 237 transitions, 2470 flow [2024-06-20 16:26:03,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 237 transitions, 2419 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:03,122 INFO L231 Difference]: Finished difference. Result has 324 places, 210 transitions, 1728 flow [2024-06-20 16:26:03,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1595, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1728, PETRI_PLACES=324, PETRI_TRANSITIONS=210} [2024-06-20 16:26:03,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-06-20 16:26:03,123 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 210 transitions, 1728 flow [2024-06-20 16:26:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:03,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:03,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:03,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-20 16:26:03,123 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:03,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:03,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1355296489, now seen corresponding path program 5 times [2024-06-20 16:26:03,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:03,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145889336] [2024-06-20 16:26:03,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:03,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:03,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145889336] [2024-06-20 16:26:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145889336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:03,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:03,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:26:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105415382] [2024-06-20 16:26:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:03,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:26:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:26:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:26:04,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:04,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 210 transitions, 1728 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:04,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:04,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:04,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:04,414 INFO L124 PetriNetUnfolderBase]: 698/1386 cut-off events. [2024-06-20 16:26:04,415 INFO L125 PetriNetUnfolderBase]: For 505405/505405 co-relation queries the response was YES. [2024-06-20 16:26:04,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11113 conditions, 1386 events. 698/1386 cut-off events. For 505405/505405 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8114 event pairs, 211 based on Foata normal form. 8/1394 useless extension candidates. Maximal degree in co-relation 10955. Up to 1254 conditions per place. [2024-06-20 16:26:04,430 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 13 changer transitions 11/230 dead transitions. [2024-06-20 16:26:04,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 230 transitions, 2524 flow [2024-06-20 16:26:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-20 16:26:04,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-20 16:26:04,431 INFO L175 Difference]: Start difference. First operand has 324 places, 210 transitions, 1728 flow. Second operand 11 states and 113 transitions. [2024-06-20 16:26:04,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 230 transitions, 2524 flow [2024-06-20 16:26:05,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 230 transitions, 2368 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:05,796 INFO L231 Difference]: Finished difference. Result has 321 places, 204 transitions, 1572 flow [2024-06-20 16:26:05,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1572, PETRI_PLACES=321, PETRI_TRANSITIONS=204} [2024-06-20 16:26:05,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-20 16:26:05,800 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 204 transitions, 1572 flow [2024-06-20 16:26:05,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:05,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:05,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:05,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-20 16:26:05,801 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:05,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:05,816 INFO L85 PathProgramCache]: Analyzing trace with hash -843333127, now seen corresponding path program 6 times [2024-06-20 16:26:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:05,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189947582] [2024-06-20 16:26:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:05,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:06,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:06,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189947582] [2024-06-20 16:26:06,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189947582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:06,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:06,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:26:06,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099861073] [2024-06-20 16:26:06,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:06,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:26:06,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:06,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:26:06,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:26:06,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:06,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 204 transitions, 1572 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:06,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:06,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:06,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:07,296 INFO L124 PetriNetUnfolderBase]: 684/1360 cut-off events. [2024-06-20 16:26:07,296 INFO L125 PetriNetUnfolderBase]: For 490626/490626 co-relation queries the response was YES. [2024-06-20 16:26:07,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10805 conditions, 1360 events. 684/1360 cut-off events. For 490626/490626 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7939 event pairs, 209 based on Foata normal form. 8/1368 useless extension candidates. Maximal degree in co-relation 10649. Up to 1236 conditions per place. [2024-06-20 16:26:07,313 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 12 changer transitions 11/226 dead transitions. [2024-06-20 16:26:07,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 226 transitions, 2360 flow [2024-06-20 16:26:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-20 16:26:07,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-20 16:26:07,314 INFO L175 Difference]: Start difference. First operand has 321 places, 204 transitions, 1572 flow. Second operand 12 states and 118 transitions. [2024-06-20 16:26:07,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 226 transitions, 2360 flow [2024-06-20 16:26:08,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 226 transitions, 2315 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-20 16:26:08,552 INFO L231 Difference]: Finished difference. Result has 315 places, 200 transitions, 1541 flow [2024-06-20 16:26:08,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1541, PETRI_PLACES=315, PETRI_TRANSITIONS=200} [2024-06-20 16:26:08,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-20 16:26:08,552 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 200 transitions, 1541 flow [2024-06-20 16:26:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:08,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:08,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:08,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-20 16:26:08,553 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:08,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:08,553 INFO L85 PathProgramCache]: Analyzing trace with hash -576995833, now seen corresponding path program 33 times [2024-06-20 16:26:08,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:08,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108136426] [2024-06-20 16:26:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:08,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:09,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:09,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108136426] [2024-06-20 16:26:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108136426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:09,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150143946] [2024-06-20 16:26:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:09,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:09,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:09,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 200 transitions, 1541 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:09,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:09,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:09,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:09,947 INFO L124 PetriNetUnfolderBase]: 652/1297 cut-off events. [2024-06-20 16:26:09,948 INFO L125 PetriNetUnfolderBase]: For 412396/412400 co-relation queries the response was YES. [2024-06-20 16:26:09,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9180 conditions, 1297 events. 652/1297 cut-off events. For 412396/412400 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7457 event pairs, 176 based on Foata normal form. 12/1309 useless extension candidates. Maximal degree in co-relation 9028. Up to 853 conditions per place. [2024-06-20 16:26:09,962 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 140 selfloop transitions, 74 changer transitions 7/223 dead transitions. [2024-06-20 16:26:09,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 223 transitions, 2102 flow [2024-06-20 16:26:09,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-20 16:26:09,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-20 16:26:09,963 INFO L175 Difference]: Start difference. First operand has 315 places, 200 transitions, 1541 flow. Second operand 11 states and 125 transitions. [2024-06-20 16:26:09,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 223 transitions, 2102 flow [2024-06-20 16:26:11,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 223 transitions, 2073 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:11,231 INFO L231 Difference]: Finished difference. Result has 310 places, 198 transitions, 1684 flow [2024-06-20 16:26:11,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1684, PETRI_PLACES=310, PETRI_TRANSITIONS=198} [2024-06-20 16:26:11,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-20 16:26:11,231 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 198 transitions, 1684 flow [2024-06-20 16:26:11,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:11,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:11,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:11,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-20 16:26:11,232 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:11,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:11,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2055595481, now seen corresponding path program 7 times [2024-06-20 16:26:11,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:11,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413747447] [2024-06-20 16:26:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:11,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:11,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:11,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413747447] [2024-06-20 16:26:11,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413747447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:11,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:11,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-20 16:26:11,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161807183] [2024-06-20 16:26:11,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:11,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 16:26:11,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:11,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 16:26:11,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-20 16:26:12,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:12,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 198 transitions, 1684 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:12,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:12,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:12,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:12,362 INFO L124 PetriNetUnfolderBase]: 648/1297 cut-off events. [2024-06-20 16:26:12,362 INFO L125 PetriNetUnfolderBase]: For 400756/400760 co-relation queries the response was YES. [2024-06-20 16:26:12,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9814 conditions, 1297 events. 648/1297 cut-off events. For 400756/400760 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7497 event pairs, 180 based on Foata normal form. 8/1305 useless extension candidates. Maximal degree in co-relation 9664. Up to 801 conditions per place. [2024-06-20 16:26:12,376 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 71 changer transitions 8/221 dead transitions. [2024-06-20 16:26:12,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 221 transitions, 2483 flow [2024-06-20 16:26:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-20 16:26:12,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-20 16:26:12,377 INFO L175 Difference]: Start difference. First operand has 310 places, 198 transitions, 1684 flow. Second operand 11 states and 123 transitions. [2024-06-20 16:26:12,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 221 transitions, 2483 flow [2024-06-20 16:26:13,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 221 transitions, 2276 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:13,336 INFO L231 Difference]: Finished difference. Result has 310 places, 194 transitions, 1588 flow [2024-06-20 16:26:13,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1588, PETRI_PLACES=310, PETRI_TRANSITIONS=194} [2024-06-20 16:26:13,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-20 16:26:13,337 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 194 transitions, 1588 flow [2024-06-20 16:26:13,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 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) [2024-06-20 16:26:13,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:13,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:13,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-20 16:26:13,338 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:13,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:13,338 INFO L85 PathProgramCache]: Analyzing trace with hash -584347483, now seen corresponding path program 34 times [2024-06-20 16:26:13,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:13,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289462960] [2024-06-20 16:26:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:13,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289462960] [2024-06-20 16:26:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289462960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:14,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:14,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:14,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60540500] [2024-06-20 16:26:14,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:14,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:14,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:14,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:14,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 194 transitions, 1588 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:14,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:14,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:14,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:14,805 INFO L124 PetriNetUnfolderBase]: 626/1251 cut-off events. [2024-06-20 16:26:14,805 INFO L125 PetriNetUnfolderBase]: For 339654/339658 co-relation queries the response was YES. [2024-06-20 16:26:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 1251 events. 626/1251 cut-off events. For 339654/339658 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7133 event pairs, 179 based on Foata normal form. 2/1253 useless extension candidates. Maximal degree in co-relation 9148. Up to 858 conditions per place. [2024-06-20 16:26:14,820 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 138 selfloop transitions, 72 changer transitions 0/212 dead transitions. [2024-06-20 16:26:14,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 212 transitions, 2097 flow [2024-06-20 16:26:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-20 16:26:14,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-20 16:26:14,822 INFO L175 Difference]: Start difference. First operand has 310 places, 194 transitions, 1588 flow. Second operand 11 states and 115 transitions. [2024-06-20 16:26:14,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 212 transitions, 2097 flow [2024-06-20 16:26:16,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 212 transitions, 1900 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:16,126 INFO L231 Difference]: Finished difference. Result has 306 places, 195 transitions, 1582 flow [2024-06-20 16:26:16,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1582, PETRI_PLACES=306, PETRI_TRANSITIONS=195} [2024-06-20 16:26:16,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-20 16:26:16,126 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 195 transitions, 1582 flow [2024-06-20 16:26:16,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:16,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:16,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:16,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-20 16:26:16,127 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:16,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash -584353063, now seen corresponding path program 35 times [2024-06-20 16:26:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:16,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567827891] [2024-06-20 16:26:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:16,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:17,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:17,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567827891] [2024-06-20 16:26:17,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567827891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:17,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235257730] [2024-06-20 16:26:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:17,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:17,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:17,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 195 transitions, 1582 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:17,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:17,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:17,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:17,560 INFO L124 PetriNetUnfolderBase]: 623/1246 cut-off events. [2024-06-20 16:26:17,560 INFO L125 PetriNetUnfolderBase]: For 298654/298658 co-relation queries the response was YES. [2024-06-20 16:26:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8696 conditions, 1246 events. 623/1246 cut-off events. For 298654/298658 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7120 event pairs, 178 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 8549. Up to 833 conditions per place. [2024-06-20 16:26:17,573 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 74 changer transitions 0/212 dead transitions. [2024-06-20 16:26:17,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 212 transitions, 2048 flow [2024-06-20 16:26:17,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-20 16:26:17,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-20 16:26:17,574 INFO L175 Difference]: Start difference. First operand has 306 places, 195 transitions, 1582 flow. Second operand 11 states and 116 transitions. [2024-06-20 16:26:17,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 212 transitions, 2048 flow [2024-06-20 16:26:18,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 212 transitions, 1840 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-20 16:26:18,572 INFO L231 Difference]: Finished difference. Result has 308 places, 195 transitions, 1526 flow [2024-06-20 16:26:18,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1526, PETRI_PLACES=308, PETRI_TRANSITIONS=195} [2024-06-20 16:26:18,572 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-20 16:26:18,572 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 195 transitions, 1526 flow [2024-06-20 16:26:18,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 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) [2024-06-20 16:26:18,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:18,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:18,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-20 16:26:18,573 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:18,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1421831180, now seen corresponding path program 1 times [2024-06-20 16:26:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:18,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486769663] [2024-06-20 16:26:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486769663] [2024-06-20 16:26:19,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486769663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:19,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:19,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:19,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314971958] [2024-06-20 16:26:19,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:19,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:19,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:19,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:19,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:19,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 195 transitions, 1526 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:19,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:19,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:19,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:20,198 INFO L124 PetriNetUnfolderBase]: 631/1265 cut-off events. [2024-06-20 16:26:20,198 INFO L125 PetriNetUnfolderBase]: For 333545/333545 co-relation queries the response was YES. [2024-06-20 16:26:20,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8658 conditions, 1265 events. 631/1265 cut-off events. For 333545/333545 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 7258 event pairs, 181 based on Foata normal form. 6/1271 useless extension candidates. Maximal degree in co-relation 8510. Up to 1128 conditions per place. [2024-06-20 16:26:20,213 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 179 selfloop transitions, 14 changer transitions 25/220 dead transitions. [2024-06-20 16:26:20,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 220 transitions, 2026 flow [2024-06-20 16:26:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-20 16:26:20,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-20 16:26:20,215 INFO L175 Difference]: Start difference. First operand has 308 places, 195 transitions, 1526 flow. Second operand 12 states and 118 transitions. [2024-06-20 16:26:20,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 220 transitions, 2026 flow [2024-06-20 16:26:21,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 220 transitions, 1731 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:21,223 INFO L231 Difference]: Finished difference. Result has 308 places, 187 transitions, 1215 flow [2024-06-20 16:26:21,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1215, PETRI_PLACES=308, PETRI_TRANSITIONS=187} [2024-06-20 16:26:21,224 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-20 16:26:21,224 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 187 transitions, 1215 flow [2024-06-20 16:26:21,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:21,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:21,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:21,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-20 16:26:21,225 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:21,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2056936794, now seen corresponding path program 2 times [2024-06-20 16:26:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:21,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604268168] [2024-06-20 16:26:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:21,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:22,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:22,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604268168] [2024-06-20 16:26:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604268168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:22,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:22,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:22,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855382801] [2024-06-20 16:26:22,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:22,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:22,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:22,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:22,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:22,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:22,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 187 transitions, 1215 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:22,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:22,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:22,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:23,088 INFO L124 PetriNetUnfolderBase]: 597/1205 cut-off events. [2024-06-20 16:26:23,088 INFO L125 PetriNetUnfolderBase]: For 333125/333125 co-relation queries the response was YES. [2024-06-20 16:26:23,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8075 conditions, 1205 events. 597/1205 cut-off events. For 333125/333125 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6904 event pairs, 157 based on Foata normal form. 6/1211 useless extension candidates. Maximal degree in co-relation 7927. Up to 979 conditions per place. [2024-06-20 16:26:23,101 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 166 selfloop transitions, 23 changer transitions 18/209 dead transitions. [2024-06-20 16:26:23,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 209 transitions, 1685 flow [2024-06-20 16:26:23,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:23,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-20 16:26:23,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-20 16:26:23,102 INFO L175 Difference]: Start difference. First operand has 308 places, 187 transitions, 1215 flow. Second operand 12 states and 120 transitions. [2024-06-20 16:26:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 209 transitions, 1685 flow [2024-06-20 16:26:23,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 209 transitions, 1645 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:23,921 INFO L231 Difference]: Finished difference. Result has 298 places, 179 transitions, 1168 flow [2024-06-20 16:26:23,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1168, PETRI_PLACES=298, PETRI_TRANSITIONS=179} [2024-06-20 16:26:23,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-20 16:26:23,922 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 179 transitions, 1168 flow [2024-06-20 16:26:23,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:23,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:23,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:23,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-20 16:26:23,922 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:23,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1859236438, now seen corresponding path program 3 times [2024-06-20 16:26:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423414721] [2024-06-20 16:26:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:23,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:25,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423414721] [2024-06-20 16:26:25,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423414721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:25,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:25,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293894926] [2024-06-20 16:26:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:25,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:25,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:25,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:25,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:25,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:25,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 179 transitions, 1168 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:25,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:25,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:25,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:25,547 INFO L124 PetriNetUnfolderBase]: 573/1165 cut-off events. [2024-06-20 16:26:25,547 INFO L125 PetriNetUnfolderBase]: For 307445/307445 co-relation queries the response was YES. [2024-06-20 16:26:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7786 conditions, 1165 events. 573/1165 cut-off events. For 307445/307445 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6670 event pairs, 161 based on Foata normal form. 6/1171 useless extension candidates. Maximal degree in co-relation 7643. Up to 975 conditions per place. [2024-06-20 16:26:25,557 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 162 selfloop transitions, 24 changer transitions 13/201 dead transitions. [2024-06-20 16:26:25,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 201 transitions, 1624 flow [2024-06-20 16:26:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:25,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-20 16:26:25,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-20 16:26:25,558 INFO L175 Difference]: Start difference. First operand has 298 places, 179 transitions, 1168 flow. Second operand 12 states and 118 transitions. [2024-06-20 16:26:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 201 transitions, 1624 flow [2024-06-20 16:26:26,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 201 transitions, 1568 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:26,468 INFO L231 Difference]: Finished difference. Result has 290 places, 174 transitions, 1135 flow [2024-06-20 16:26:26,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1135, PETRI_PLACES=290, PETRI_TRANSITIONS=174} [2024-06-20 16:26:26,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-20 16:26:26,469 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 174 transitions, 1135 flow [2024-06-20 16:26:26,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:26,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:26,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-20 16:26:26,469 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:26,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 379512686, now seen corresponding path program 4 times [2024-06-20 16:26:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:26,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89297618] [2024-06-20 16:26:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:27,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:27,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89297618] [2024-06-20 16:26:27,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89297618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:27,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:27,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123394883] [2024-06-20 16:26:27,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:27,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:27,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:27,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:27,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:27,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 174 transitions, 1135 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:27,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:27,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:27,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:28,126 INFO L124 PetriNetUnfolderBase]: 557/1137 cut-off events. [2024-06-20 16:26:28,126 INFO L125 PetriNetUnfolderBase]: For 287235/287235 co-relation queries the response was YES. [2024-06-20 16:26:28,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1137 events. 557/1137 cut-off events. For 287235/287235 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6469 event pairs, 165 based on Foata normal form. 6/1143 useless extension candidates. Maximal degree in co-relation 7423. Up to 987 conditions per place. [2024-06-20 16:26:28,137 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 22 changer transitions 13/196 dead transitions. [2024-06-20 16:26:28,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 196 transitions, 1585 flow [2024-06-20 16:26:28,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 115 transitions. [2024-06-20 16:26:28,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30913978494623656 [2024-06-20 16:26:28,138 INFO L175 Difference]: Start difference. First operand has 290 places, 174 transitions, 1135 flow. Second operand 12 states and 115 transitions. [2024-06-20 16:26:28,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 196 transitions, 1585 flow [2024-06-20 16:26:29,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 196 transitions, 1529 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:29,028 INFO L231 Difference]: Finished difference. Result has 284 places, 169 transitions, 1090 flow [2024-06-20 16:26:29,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1090, PETRI_PLACES=284, PETRI_TRANSITIONS=169} [2024-06-20 16:26:29,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-20 16:26:29,028 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 169 transitions, 1090 flow [2024-06-20 16:26:29,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:29,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:29,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:29,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-20 16:26:29,029 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:29,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1854767788, now seen corresponding path program 5 times [2024-06-20 16:26:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:29,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936355856] [2024-06-20 16:26:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:29,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:30,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:30,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936355856] [2024-06-20 16:26:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936355856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:30,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:30,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728804906] [2024-06-20 16:26:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:30,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:30,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 169 transitions, 1090 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:30,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:30,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:30,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:30,622 INFO L124 PetriNetUnfolderBase]: 544/1114 cut-off events. [2024-06-20 16:26:30,623 INFO L125 PetriNetUnfolderBase]: For 272665/272665 co-relation queries the response was YES. [2024-06-20 16:26:30,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1114 events. 544/1114 cut-off events. For 272665/272665 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6299 event pairs, 163 based on Foata normal form. 6/1120 useless extension candidates. Maximal degree in co-relation 7236. Up to 967 conditions per place. [2024-06-20 16:26:30,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 6 changer transitions 37/191 dead transitions. [2024-06-20 16:26:30,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 191 transitions, 1528 flow [2024-06-20 16:26:30,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-20 16:26:30,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-20 16:26:30,651 INFO L175 Difference]: Start difference. First operand has 284 places, 169 transitions, 1090 flow. Second operand 12 states and 114 transitions. [2024-06-20 16:26:30,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 191 transitions, 1528 flow [2024-06-20 16:26:31,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 191 transitions, 1478 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:31,326 INFO L231 Difference]: Finished difference. Result has 279 places, 150 transitions, 896 flow [2024-06-20 16:26:31,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=896, PETRI_PLACES=279, PETRI_TRANSITIONS=150} [2024-06-20 16:26:31,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-20 16:26:31,327 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 150 transitions, 896 flow [2024-06-20 16:26:31,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:31,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:31,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:31,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-20 16:26:31,328 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:31,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1082519090, now seen corresponding path program 6 times [2024-06-20 16:26:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447784564] [2024-06-20 16:26:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:32,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:32,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447784564] [2024-06-20 16:26:32,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447784564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:32,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:32,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234378312] [2024-06-20 16:26:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:32,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:32,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:32,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:32,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:32,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 150 transitions, 896 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:32,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:32,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:32,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:32,751 INFO L124 PetriNetUnfolderBase]: 478/974 cut-off events. [2024-06-20 16:26:32,751 INFO L125 PetriNetUnfolderBase]: For 225361/225361 co-relation queries the response was YES. [2024-06-20 16:26:32,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 974 events. 478/974 cut-off events. For 225361/225361 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5396 event pairs, 135 based on Foata normal form. 6/980 useless extension candidates. Maximal degree in co-relation 5969. Up to 808 conditions per place. [2024-06-20 16:26:32,761 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 128 selfloop transitions, 17 changer transitions 21/168 dead transitions. [2024-06-20 16:26:32,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 168 transitions, 1276 flow [2024-06-20 16:26:32,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:32,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-20 16:26:32,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-20 16:26:32,762 INFO L175 Difference]: Start difference. First operand has 279 places, 150 transitions, 896 flow. Second operand 11 states and 109 transitions. [2024-06-20 16:26:32,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 168 transitions, 1276 flow [2024-06-20 16:26:33,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 168 transitions, 1232 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-06-20 16:26:33,247 INFO L231 Difference]: Finished difference. Result has 256 places, 137 transitions, 835 flow [2024-06-20 16:26:33,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=835, PETRI_PLACES=256, PETRI_TRANSITIONS=137} [2024-06-20 16:26:33,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-20 16:26:33,248 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 137 transitions, 835 flow [2024-06-20 16:26:33,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:33,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:33,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:33,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-20 16:26:33,248 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:33,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1082940756, now seen corresponding path program 7 times [2024-06-20 16:26:33,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:33,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487614210] [2024-06-20 16:26:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:34,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487614210] [2024-06-20 16:26:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487614210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:34,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655596660] [2024-06-20 16:26:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:34,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:34,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 137 transitions, 835 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:34,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:34,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:34,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:34,684 INFO L124 PetriNetUnfolderBase]: 439/901 cut-off events. [2024-06-20 16:26:34,684 INFO L125 PetriNetUnfolderBase]: For 201816/201816 co-relation queries the response was YES. [2024-06-20 16:26:34,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 901 events. 439/901 cut-off events. For 201816/201816 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4876 event pairs, 129 based on Foata normal form. 6/907 useless extension candidates. Maximal degree in co-relation 5541. Up to 754 conditions per place. [2024-06-20 16:26:34,692 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 119 selfloop transitions, 11 changer transitions 23/155 dead transitions. [2024-06-20 16:26:34,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 155 transitions, 1181 flow [2024-06-20 16:26:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-20 16:26:34,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-20 16:26:34,693 INFO L175 Difference]: Start difference. First operand has 256 places, 137 transitions, 835 flow. Second operand 11 states and 107 transitions. [2024-06-20 16:26:34,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 155 transitions, 1181 flow [2024-06-20 16:26:35,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 155 transitions, 1127 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-20 16:26:35,022 INFO L231 Difference]: Finished difference. Result has 237 places, 124 transitions, 749 flow [2024-06-20 16:26:35,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=749, PETRI_PLACES=237, PETRI_TRANSITIONS=124} [2024-06-20 16:26:35,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-20 16:26:35,022 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 124 transitions, 749 flow [2024-06-20 16:26:35,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:35,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:35,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-20 16:26:35,023 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:35,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:35,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1914750088, now seen corresponding path program 8 times [2024-06-20 16:26:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:35,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688536685] [2024-06-20 16:26:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:35,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:36,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688536685] [2024-06-20 16:26:36,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688536685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:36,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:36,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:36,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538753625] [2024-06-20 16:26:36,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:36,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:36,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:36,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:36,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 124 transitions, 749 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:36,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:36,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:36,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:36,530 INFO L124 PetriNetUnfolderBase]: 398/822 cut-off events. [2024-06-20 16:26:36,531 INFO L125 PetriNetUnfolderBase]: For 168960/168960 co-relation queries the response was YES. [2024-06-20 16:26:36,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5153 conditions, 822 events. 398/822 cut-off events. For 168960/168960 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4339 event pairs, 121 based on Foata normal form. 6/828 useless extension candidates. Maximal degree in co-relation 5047. Up to 702 conditions per place. [2024-06-20 16:26:36,537 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 110 selfloop transitions, 7 changer transitions 23/142 dead transitions. [2024-06-20 16:26:36,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 142 transitions, 1069 flow [2024-06-20 16:26:36,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-20 16:26:36,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-20 16:26:36,538 INFO L175 Difference]: Start difference. First operand has 237 places, 124 transitions, 749 flow. Second operand 11 states and 105 transitions. [2024-06-20 16:26:36,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 142 transitions, 1069 flow [2024-06-20 16:26:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 142 transitions, 1025 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-20 16:26:36,858 INFO L231 Difference]: Finished difference. Result has 217 places, 113 transitions, 674 flow [2024-06-20 16:26:36,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=674, PETRI_PLACES=217, PETRI_TRANSITIONS=113} [2024-06-20 16:26:36,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 187 predicate places. [2024-06-20 16:26:36,859 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 113 transitions, 674 flow [2024-06-20 16:26:36,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:36,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:36,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:36,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-20 16:26:36,859 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:36,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1141778976, now seen corresponding path program 9 times [2024-06-20 16:26:36,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:36,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192966348] [2024-06-20 16:26:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:36,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:37,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:37,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192966348] [2024-06-20 16:26:37,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192966348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:37,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:37,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268061832] [2024-06-20 16:26:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:37,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:37,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:37,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:37,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:37,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:37,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 113 transitions, 674 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:37,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:37,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:37,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:38,143 INFO L124 PetriNetUnfolderBase]: 363/753 cut-off events. [2024-06-20 16:26:38,143 INFO L125 PetriNetUnfolderBase]: For 135880/135880 co-relation queries the response was YES. [2024-06-20 16:26:38,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4653 conditions, 753 events. 363/753 cut-off events. For 135880/135880 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3898 event pairs, 115 based on Foata normal form. 6/759 useless extension candidates. Maximal degree in co-relation 4557. Up to 668 conditions per place. [2024-06-20 16:26:38,149 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 3 changer transitions 27/131 dead transitions. [2024-06-20 16:26:38,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 131 transitions, 972 flow [2024-06-20 16:26:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-20 16:26:38,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-20 16:26:38,150 INFO L175 Difference]: Start difference. First operand has 217 places, 113 transitions, 674 flow. Second operand 11 states and 103 transitions. [2024-06-20 16:26:38,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 131 transitions, 972 flow [2024-06-20 16:26:38,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 131 transitions, 938 flow, removed 10 selfloop flow, removed 15 redundant places. [2024-06-20 16:26:38,338 INFO L231 Difference]: Finished difference. Result has 199 places, 103 transitions, 600 flow [2024-06-20 16:26:38,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=600, PETRI_PLACES=199, PETRI_TRANSITIONS=103} [2024-06-20 16:26:38,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-20 16:26:38,338 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 103 transitions, 600 flow [2024-06-20 16:26:38,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:38,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:38,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:38,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-20 16:26:38,339 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:38,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:38,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1855477224, now seen corresponding path program 10 times [2024-06-20 16:26:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012157627] [2024-06-20 16:26:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:39,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:39,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012157627] [2024-06-20 16:26:39,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012157627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:39,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:39,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413380016] [2024-06-20 16:26:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:39,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:39,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:39,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 103 transitions, 600 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:39,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:39,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:39,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:39,791 INFO L124 PetriNetUnfolderBase]: 337/696 cut-off events. [2024-06-20 16:26:39,792 INFO L125 PetriNetUnfolderBase]: For 109136/109136 co-relation queries the response was YES. [2024-06-20 16:26:39,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 696 events. 337/696 cut-off events. For 109136/109136 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3567 event pairs, 103 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4122. Up to 476 conditions per place. [2024-06-20 16:26:39,797 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 33 changer transitions 11/120 dead transitions. [2024-06-20 16:26:39,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 120 transitions, 872 flow [2024-06-20 16:26:39,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-20 16:26:39,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-20 16:26:39,798 INFO L175 Difference]: Start difference. First operand has 199 places, 103 transitions, 600 flow. Second operand 12 states and 114 transitions. [2024-06-20 16:26:39,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 120 transitions, 872 flow [2024-06-20 16:26:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 120 transitions, 846 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-20 16:26:39,918 INFO L231 Difference]: Finished difference. Result has 183 places, 100 transitions, 628 flow [2024-06-20 16:26:39,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=628, PETRI_PLACES=183, PETRI_TRANSITIONS=100} [2024-06-20 16:26:39,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-20 16:26:39,919 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 100 transitions, 628 flow [2024-06-20 16:26:39,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:39,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:39,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-20 16:26:39,919 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:39,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -868471990, now seen corresponding path program 11 times [2024-06-20 16:26:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:39,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837124755] [2024-06-20 16:26:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:40,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:40,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837124755] [2024-06-20 16:26:40,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837124755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:40,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:40,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:40,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267311758] [2024-06-20 16:26:40,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:40,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:40,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:41,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:41,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:41,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:41,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 100 transitions, 628 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:41,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:41,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:41,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:41,290 INFO L124 PetriNetUnfolderBase]: 327/678 cut-off events. [2024-06-20 16:26:41,290 INFO L125 PetriNetUnfolderBase]: For 90484/90484 co-relation queries the response was YES. [2024-06-20 16:26:41,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 678 events. 327/678 cut-off events. For 90484/90484 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3460 event pairs, 101 based on Foata normal form. 6/684 useless extension candidates. Maximal degree in co-relation 3926. Up to 452 conditions per place. [2024-06-20 16:26:41,295 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 32 changer transitions 10/117 dead transitions. [2024-06-20 16:26:41,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 117 transitions, 894 flow [2024-06-20 16:26:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-20 16:26:41,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-20 16:26:41,296 INFO L175 Difference]: Start difference. First operand has 183 places, 100 transitions, 628 flow. Second operand 12 states and 114 transitions. [2024-06-20 16:26:41,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 117 transitions, 894 flow [2024-06-20 16:26:41,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 117 transitions, 822 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:41,444 INFO L231 Difference]: Finished difference. Result has 179 places, 96 transitions, 604 flow [2024-06-20 16:26:41,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=179, PETRI_TRANSITIONS=96} [2024-06-20 16:26:41,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-20 16:26:41,444 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 96 transitions, 604 flow [2024-06-20 16:26:41,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:41,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:41,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-20 16:26:41,445 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:41,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash -275027432, now seen corresponding path program 12 times [2024-06-20 16:26:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:41,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869361196] [2024-06-20 16:26:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:41,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:42,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869361196] [2024-06-20 16:26:42,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869361196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:42,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:42,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:42,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126149890] [2024-06-20 16:26:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:42,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:42,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:42,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 96 transitions, 604 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:42,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:42,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:42,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:42,994 INFO L124 PetriNetUnfolderBase]: 315/654 cut-off events. [2024-06-20 16:26:42,994 INFO L125 PetriNetUnfolderBase]: For 85450/85450 co-relation queries the response was YES. [2024-06-20 16:26:42,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 654 events. 315/654 cut-off events. For 85450/85450 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3311 event pairs, 95 based on Foata normal form. 6/660 useless extension candidates. Maximal degree in co-relation 3802. Up to 448 conditions per place. [2024-06-20 16:26:42,998 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 66 selfloop transitions, 34 changer transitions 11/113 dead transitions. [2024-06-20 16:26:42,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 113 transitions, 862 flow [2024-06-20 16:26:42,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-20 16:26:42,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-20 16:26:42,999 INFO L175 Difference]: Start difference. First operand has 179 places, 96 transitions, 604 flow. Second operand 12 states and 113 transitions. [2024-06-20 16:26:43,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 113 transitions, 862 flow [2024-06-20 16:26:43,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 113 transitions, 790 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 16:26:43,130 INFO L231 Difference]: Finished difference. Result has 173 places, 93 transitions, 588 flow [2024-06-20 16:26:43,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=588, PETRI_PLACES=173, PETRI_TRANSITIONS=93} [2024-06-20 16:26:43,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-20 16:26:43,130 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 93 transitions, 588 flow [2024-06-20 16:26:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:43,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:43,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:43,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-20 16:26:43,131 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:43,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:43,131 INFO L85 PathProgramCache]: Analyzing trace with hash -275200412, now seen corresponding path program 13 times [2024-06-20 16:26:43,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:43,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863953531] [2024-06-20 16:26:43,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:43,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:44,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863953531] [2024-06-20 16:26:44,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863953531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:44,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:44,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:44,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186321294] [2024-06-20 16:26:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:44,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:44,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 93 transitions, 588 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:44,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:44,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:44,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:44,616 INFO L124 PetriNetUnfolderBase]: 305/636 cut-off events. [2024-06-20 16:26:44,616 INFO L125 PetriNetUnfolderBase]: For 78302/78302 co-relation queries the response was YES. [2024-06-20 16:26:44,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 636 events. 305/636 cut-off events. For 78302/78302 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3175 event pairs, 89 based on Foata normal form. 6/642 useless extension candidates. Maximal degree in co-relation 3666. Up to 418 conditions per place. [2024-06-20 16:26:44,620 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 64 selfloop transitions, 34 changer transitions 10/110 dead transitions. [2024-06-20 16:26:44,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 110 transitions, 840 flow [2024-06-20 16:26:44,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-20 16:26:44,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-20 16:26:44,621 INFO L175 Difference]: Start difference. First operand has 173 places, 93 transitions, 588 flow. Second operand 12 states and 113 transitions. [2024-06-20 16:26:44,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 110 transitions, 840 flow [2024-06-20 16:26:44,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 110 transitions, 766 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:44,739 INFO L231 Difference]: Finished difference. Result has 169 places, 89 transitions, 566 flow [2024-06-20 16:26:44,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=566, PETRI_PLACES=169, PETRI_TRANSITIONS=89} [2024-06-20 16:26:44,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-20 16:26:44,744 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 89 transitions, 566 flow [2024-06-20 16:26:44,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:44,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:44,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:44,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-20 16:26:44,745 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:44,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash 707002110, now seen corresponding path program 14 times [2024-06-20 16:26:44,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:44,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89570411] [2024-06-20 16:26:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:44,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:45,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:45,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89570411] [2024-06-20 16:26:45,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89570411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:45,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:45,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:45,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270870304] [2024-06-20 16:26:45,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:45,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:45,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:45,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:45,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:45,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:45,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 89 transitions, 566 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:45,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:45,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:45,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:46,208 INFO L124 PetriNetUnfolderBase]: 278/579 cut-off events. [2024-06-20 16:26:46,209 INFO L125 PetriNetUnfolderBase]: For 61270/61270 co-relation queries the response was YES. [2024-06-20 16:26:46,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 579 events. 278/579 cut-off events. For 61270/61270 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2793 event pairs, 84 based on Foata normal form. 6/585 useless extension candidates. Maximal degree in co-relation 3090. Up to 367 conditions per place. [2024-06-20 16:26:46,212 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 24 changer transitions 19/104 dead transitions. [2024-06-20 16:26:46,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 104 transitions, 802 flow [2024-06-20 16:26:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-20 16:26:46,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-20 16:26:46,213 INFO L175 Difference]: Start difference. First operand has 169 places, 89 transitions, 566 flow. Second operand 11 states and 105 transitions. [2024-06-20 16:26:46,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 104 transitions, 802 flow [2024-06-20 16:26:46,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 104 transitions, 726 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-20 16:26:46,289 INFO L231 Difference]: Finished difference. Result has 162 places, 78 transitions, 489 flow [2024-06-20 16:26:46,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=489, PETRI_PLACES=162, PETRI_TRANSITIONS=78} [2024-06-20 16:26:46,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-20 16:26:46,289 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 78 transitions, 489 flow [2024-06-20 16:26:46,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:46,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:46,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-20 16:26:46,290 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:46,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1543107112, now seen corresponding path program 15 times [2024-06-20 16:26:46,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:46,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124455637] [2024-06-20 16:26:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124455637] [2024-06-20 16:26:47,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124455637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:47,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621052585] [2024-06-20 16:26:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:47,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:47,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:47,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:47,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 78 transitions, 489 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:47,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:47,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:47,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:47,986 INFO L124 PetriNetUnfolderBase]: 248/521 cut-off events. [2024-06-20 16:26:47,986 INFO L125 PetriNetUnfolderBase]: For 55638/55638 co-relation queries the response was YES. [2024-06-20 16:26:47,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2899 conditions, 521 events. 248/521 cut-off events. For 55638/55638 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2456 event pairs, 82 based on Foata normal form. 6/527 useless extension candidates. Maximal degree in co-relation 2830. Up to 349 conditions per place. [2024-06-20 16:26:47,989 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 22 changer transitions 14/95 dead transitions. [2024-06-20 16:26:47,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 95 transitions, 711 flow [2024-06-20 16:26:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-20 16:26:47,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-20 16:26:47,990 INFO L175 Difference]: Start difference. First operand has 162 places, 78 transitions, 489 flow. Second operand 12 states and 112 transitions. [2024-06-20 16:26:47,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 95 transitions, 711 flow [2024-06-20 16:26:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 95 transitions, 645 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-20 16:26:48,042 INFO L231 Difference]: Finished difference. Result has 146 places, 74 transitions, 452 flow [2024-06-20 16:26:48,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=452, PETRI_PLACES=146, PETRI_TRANSITIONS=74} [2024-06-20 16:26:48,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-20 16:26:48,043 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 74 transitions, 452 flow [2024-06-20 16:26:48,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:48,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:48,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:48,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-20 16:26:48,043 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:48,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash -47126282, now seen corresponding path program 16 times [2024-06-20 16:26:48,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:48,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882123378] [2024-06-20 16:26:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:48,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:49,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:49,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882123378] [2024-06-20 16:26:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882123378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:49,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:49,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328030997] [2024-06-20 16:26:49,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:49,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:49,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:49,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:49,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 74 transitions, 452 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:49,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:49,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:49,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:49,374 INFO L124 PetriNetUnfolderBase]: 219/462 cut-off events. [2024-06-20 16:26:49,375 INFO L125 PetriNetUnfolderBase]: For 33616/33616 co-relation queries the response was YES. [2024-06-20 16:26:49,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 462 events. 219/462 cut-off events. For 33616/33616 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2082 event pairs, 65 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 2172. Up to 306 conditions per place. [2024-06-20 16:26:49,377 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 22 changer transitions 13/90 dead transitions. [2024-06-20 16:26:49,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 90 transitions, 662 flow [2024-06-20 16:26:49,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:49,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-20 16:26:49,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-20 16:26:49,378 INFO L175 Difference]: Start difference. First operand has 146 places, 74 transitions, 452 flow. Second operand 11 states and 107 transitions. [2024-06-20 16:26:49,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 90 transitions, 662 flow [2024-06-20 16:26:49,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 90 transitions, 610 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:49,422 INFO L231 Difference]: Finished difference. Result has 139 places, 69 transitions, 422 flow [2024-06-20 16:26:49,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=422, PETRI_PLACES=139, PETRI_TRANSITIONS=69} [2024-06-20 16:26:49,422 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-20 16:26:49,423 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 69 transitions, 422 flow [2024-06-20 16:26:49,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:49,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:49,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-20 16:26:49,423 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:49,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:49,423 INFO L85 PathProgramCache]: Analyzing trace with hash -280349084, now seen corresponding path program 17 times [2024-06-20 16:26:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627832399] [2024-06-20 16:26:49,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:49,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627832399] [2024-06-20 16:26:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627832399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:50,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:50,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259664285] [2024-06-20 16:26:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:50,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:50,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:50,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:50,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:50,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 69 transitions, 422 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:50,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:50,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:50,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:50,811 INFO L124 PetriNetUnfolderBase]: 209/440 cut-off events. [2024-06-20 16:26:50,811 INFO L125 PetriNetUnfolderBase]: For 29906/29906 co-relation queries the response was YES. [2024-06-20 16:26:50,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 440 events. 209/440 cut-off events. For 29906/29906 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1945 event pairs, 67 based on Foata normal form. 6/446 useless extension candidates. Maximal degree in co-relation 2060. Up to 288 conditions per place. [2024-06-20 16:26:50,813 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 50 selfloop transitions, 18 changer transitions 14/84 dead transitions. [2024-06-20 16:26:50,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 84 transitions, 618 flow [2024-06-20 16:26:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-20 16:26:50,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-20 16:26:50,814 INFO L175 Difference]: Start difference. First operand has 139 places, 69 transitions, 422 flow. Second operand 11 states and 103 transitions. [2024-06-20 16:26:50,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 84 transitions, 618 flow [2024-06-20 16:26:50,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 84 transitions, 564 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:50,850 INFO L231 Difference]: Finished difference. Result has 130 places, 65 transitions, 389 flow [2024-06-20 16:26:50,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=389, PETRI_PLACES=130, PETRI_TRANSITIONS=65} [2024-06-20 16:26:50,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-20 16:26:50,852 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 65 transitions, 389 flow [2024-06-20 16:26:50,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:50,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:50,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:50,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-20 16:26:50,853 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:50,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:50,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1538638462, now seen corresponding path program 18 times [2024-06-20 16:26:50,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:50,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014110766] [2024-06-20 16:26:50,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:50,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:51,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014110766] [2024-06-20 16:26:51,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014110766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:51,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:51,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689140191] [2024-06-20 16:26:51,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:51,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:52,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:52,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 65 transitions, 389 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:52,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:52,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:52,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:52,295 INFO L124 PetriNetUnfolderBase]: 195/414 cut-off events. [2024-06-20 16:26:52,295 INFO L125 PetriNetUnfolderBase]: For 25308/25308 co-relation queries the response was YES. [2024-06-20 16:26:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 414 events. 195/414 cut-off events. For 25308/25308 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1804 event pairs, 63 based on Foata normal form. 6/420 useless extension candidates. Maximal degree in co-relation 1908. Up to 262 conditions per place. [2024-06-20 16:26:52,297 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 46 selfloop transitions, 16 changer transitions 18/82 dead transitions. [2024-06-20 16:26:52,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 82 transitions, 585 flow [2024-06-20 16:26:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-20 16:26:52,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-20 16:26:52,298 INFO L175 Difference]: Start difference. First operand has 130 places, 65 transitions, 389 flow. Second operand 12 states and 110 transitions. [2024-06-20 16:26:52,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 82 transitions, 585 flow [2024-06-20 16:26:52,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 82 transitions, 541 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-20 16:26:52,333 INFO L231 Difference]: Finished difference. Result has 125 places, 59 transitions, 353 flow [2024-06-20 16:26:52,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=353, PETRI_PLACES=125, PETRI_TRANSITIONS=59} [2024-06-20 16:26:52,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-20 16:26:52,333 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 59 transitions, 353 flow [2024-06-20 16:26:52,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:52,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:52,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:52,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-20 16:26:52,334 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:52,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1964974444, now seen corresponding path program 19 times [2024-06-20 16:26:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:52,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078843190] [2024-06-20 16:26:52,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:53,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078843190] [2024-06-20 16:26:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078843190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:53,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:53,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:53,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967956405] [2024-06-20 16:26:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:53,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:53,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:53,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:53,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:53,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:53,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 59 transitions, 353 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:53,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:53,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:53,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:53,762 INFO L124 PetriNetUnfolderBase]: 163/346 cut-off events. [2024-06-20 16:26:53,763 INFO L125 PetriNetUnfolderBase]: For 16604/16604 co-relation queries the response was YES. [2024-06-20 16:26:53,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 346 events. 163/346 cut-off events. For 16604/16604 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1409 event pairs, 52 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 1428. Up to 287 conditions per place. [2024-06-20 16:26:53,764 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 48 selfloop transitions, 6 changer transitions 16/72 dead transitions. [2024-06-20 16:26:53,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 72 transitions, 521 flow [2024-06-20 16:26:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 97 transitions. [2024-06-20 16:26:53,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2844574780058651 [2024-06-20 16:26:53,765 INFO L175 Difference]: Start difference. First operand has 125 places, 59 transitions, 353 flow. Second operand 11 states and 97 transitions. [2024-06-20 16:26:53,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 72 transitions, 521 flow [2024-06-20 16:26:53,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 72 transitions, 477 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-20 16:26:53,779 INFO L231 Difference]: Finished difference. Result has 114 places, 53 transitions, 296 flow [2024-06-20 16:26:53,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=296, PETRI_PLACES=114, PETRI_TRANSITIONS=53} [2024-06-20 16:26:53,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-20 16:26:53,780 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 53 transitions, 296 flow [2024-06-20 16:26:53,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:53,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:53,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:53,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-20 16:26:53,780 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:53,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:53,781 INFO L85 PathProgramCache]: Analyzing trace with hash 561596356, now seen corresponding path program 20 times [2024-06-20 16:26:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:53,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907840889] [2024-06-20 16:26:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:54,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:54,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:54,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907840889] [2024-06-20 16:26:54,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907840889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:54,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:54,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:54,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999245704] [2024-06-20 16:26:54,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:54,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:54,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:54,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:54,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:54,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 53 transitions, 296 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:54,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:54,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:54,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:54,935 INFO L124 PetriNetUnfolderBase]: 137/288 cut-off events. [2024-06-20 16:26:54,936 INFO L125 PetriNetUnfolderBase]: For 8630/8630 co-relation queries the response was YES. [2024-06-20 16:26:54,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 288 events. 137/288 cut-off events. For 8630/8630 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1090 event pairs, 31 based on Foata normal form. 6/294 useless extension candidates. Maximal degree in co-relation 976. Up to 156 conditions per place. [2024-06-20 16:26:54,937 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 36 selfloop transitions, 13 changer transitions 18/69 dead transitions. [2024-06-20 16:26:54,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 69 transitions, 464 flow [2024-06-20 16:26:54,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-20 16:26:54,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-20 16:26:54,938 INFO L175 Difference]: Start difference. First operand has 114 places, 53 transitions, 296 flow. Second operand 11 states and 104 transitions. [2024-06-20 16:26:54,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 69 transitions, 464 flow [2024-06-20 16:26:54,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 69 transitions, 442 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 16:26:54,945 INFO L231 Difference]: Finished difference. Result has 103 places, 43 transitions, 255 flow [2024-06-20 16:26:54,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=255, PETRI_PLACES=103, PETRI_TRANSITIONS=43} [2024-06-20 16:26:54,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-20 16:26:54,945 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 43 transitions, 255 flow [2024-06-20 16:26:54,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:54,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:54,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:54,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-20 16:26:54,946 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:54,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1553038712, now seen corresponding path program 21 times [2024-06-20 16:26:54,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:54,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724409156] [2024-06-20 16:26:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:54,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724409156] [2024-06-20 16:26:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724409156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:55,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:55,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:55,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803677213] [2024-06-20 16:26:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:55,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:55,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:55,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:55,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 43 transitions, 255 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:55,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:55,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:55,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:56,085 INFO L124 PetriNetUnfolderBase]: 108/233 cut-off events. [2024-06-20 16:26:56,086 INFO L125 PetriNetUnfolderBase]: For 6926/6926 co-relation queries the response was YES. [2024-06-20 16:26:56,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 858 conditions, 233 events. 108/233 cut-off events. For 6926/6926 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 796 event pairs, 29 based on Foata normal form. 6/239 useless extension candidates. Maximal degree in co-relation 816. Up to 130 conditions per place. [2024-06-20 16:26:56,087 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 30 selfloop transitions, 9 changer transitions 17/58 dead transitions. [2024-06-20 16:26:56,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 58 transitions, 399 flow [2024-06-20 16:26:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-20 16:26:56,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-20 16:26:56,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2024-06-20 16:26:56,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873900293255132 [2024-06-20 16:26:56,088 INFO L175 Difference]: Start difference. First operand has 103 places, 43 transitions, 255 flow. Second operand 11 states and 98 transitions. [2024-06-20 16:26:56,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 58 transitions, 399 flow [2024-06-20 16:26:56,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 58 transitions, 357 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-20 16:26:56,093 INFO L231 Difference]: Finished difference. Result has 88 places, 38 transitions, 212 flow [2024-06-20 16:26:56,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=212, PETRI_PLACES=88, PETRI_TRANSITIONS=38} [2024-06-20 16:26:56,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-20 16:26:56,093 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 38 transitions, 212 flow [2024-06-20 16:26:56,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:56,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:56,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:56,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-20 16:26:56,094 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:56,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:56,094 INFO L85 PathProgramCache]: Analyzing trace with hash -395640254, now seen corresponding path program 22 times [2024-06-20 16:26:56,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:56,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785015759] [2024-06-20 16:26:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:57,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:57,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785015759] [2024-06-20 16:26:57,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785015759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:57,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:57,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-20 16:26:57,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078341673] [2024-06-20 16:26:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:57,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-20 16:26:57,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-20 16:26:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-20 16:26:57,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:57,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 38 transitions, 212 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:57,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:57,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:57,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:57,164 INFO L124 PetriNetUnfolderBase]: 90/199 cut-off events. [2024-06-20 16:26:57,164 INFO L125 PetriNetUnfolderBase]: For 4368/4368 co-relation queries the response was YES. [2024-06-20 16:26:57,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 199 events. 90/199 cut-off events. For 4368/4368 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 636 event pairs, 14 based on Foata normal form. 6/205 useless extension candidates. Maximal degree in co-relation 674. Up to 56 conditions per place. [2024-06-20 16:26:57,165 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 23 selfloop transitions, 12 changer transitions 17/54 dead transitions. [2024-06-20 16:26:57,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 54 transitions, 350 flow [2024-06-20 16:26:57,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:57,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 103 transitions. [2024-06-20 16:26:57,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2768817204301075 [2024-06-20 16:26:57,166 INFO L175 Difference]: Start difference. First operand has 88 places, 38 transitions, 212 flow. Second operand 12 states and 103 transitions. [2024-06-20 16:26:57,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 54 transitions, 350 flow [2024-06-20 16:26:57,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 54 transitions, 322 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-20 16:26:57,170 INFO L231 Difference]: Finished difference. Result has 81 places, 31 transitions, 179 flow [2024-06-20 16:26:57,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=179, PETRI_PLACES=81, PETRI_TRANSITIONS=31} [2024-06-20 16:26:57,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-20 16:26:57,170 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 31 transitions, 179 flow [2024-06-20 16:26:57,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 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) [2024-06-20 16:26:57,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:57,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:57,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-20 16:26:57,171 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:57,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1476504864, now seen corresponding path program 23 times [2024-06-20 16:26:57,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:57,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833377562] [2024-06-20 16:26:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:57,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:58,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:58,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833377562] [2024-06-20 16:26:58,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833377562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:58,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:58,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:58,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336025395] [2024-06-20 16:26:58,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:58,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:58,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:58,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:58,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 31 transitions, 179 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:58,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:58,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:58,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:58,488 INFO L124 PetriNetUnfolderBase]: 69/156 cut-off events. [2024-06-20 16:26:58,488 INFO L125 PetriNetUnfolderBase]: For 3170/3170 co-relation queries the response was YES. [2024-06-20 16:26:58,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 156 events. 69/156 cut-off events. For 3170/3170 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 441 event pairs, 19 based on Foata normal form. 6/162 useless extension candidates. Maximal degree in co-relation 550. Up to 78 conditions per place. [2024-06-20 16:26:58,489 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 21 selfloop transitions, 9 changer transitions 14/46 dead transitions. [2024-06-20 16:26:58,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 46 transitions, 299 flow [2024-06-20 16:26:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-06-20 16:26:58,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.271505376344086 [2024-06-20 16:26:58,490 INFO L175 Difference]: Start difference. First operand has 81 places, 31 transitions, 179 flow. Second operand 12 states and 101 transitions. [2024-06-20 16:26:58,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 46 transitions, 299 flow [2024-06-20 16:26:58,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 46 transitions, 261 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-20 16:26:58,492 INFO L231 Difference]: Finished difference. Result has 69 places, 27 transitions, 144 flow [2024-06-20 16:26:58,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=27} [2024-06-20 16:26:58,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-20 16:26:58,492 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 27 transitions, 144 flow [2024-06-20 16:26:58,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:58,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:58,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:58,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-20 16:26:58,493 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:58,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1472036214, now seen corresponding path program 24 times [2024-06-20 16:26:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755093591] [2024-06-20 16:26:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:26:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:26:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:26:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755093591] [2024-06-20 16:26:59,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755093591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:26:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:26:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:26:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337580465] [2024-06-20 16:26:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:26:59,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:26:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:26:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:26:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:26:59,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:26:59,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 27 transitions, 144 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:59,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:26:59,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:26:59,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:26:59,719 INFO L124 PetriNetUnfolderBase]: 55/130 cut-off events. [2024-06-20 16:26:59,720 INFO L125 PetriNetUnfolderBase]: For 1726/1726 co-relation queries the response was YES. [2024-06-20 16:26:59,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 130 events. 55/130 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 331 event pairs, 6 based on Foata normal form. 6/136 useless extension candidates. Maximal degree in co-relation 434. Up to 38 conditions per place. [2024-06-20 16:26:59,720 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 19 selfloop transitions, 8 changer transitions 13/42 dead transitions. [2024-06-20 16:26:59,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 42 transitions, 256 flow [2024-06-20 16:26:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:26:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:26:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 99 transitions. [2024-06-20 16:26:59,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2661290322580645 [2024-06-20 16:26:59,721 INFO L175 Difference]: Start difference. First operand has 69 places, 27 transitions, 144 flow. Second operand 12 states and 99 transitions. [2024-06-20 16:26:59,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 42 transitions, 256 flow [2024-06-20 16:26:59,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 42 transitions, 230 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-20 16:26:59,723 INFO L231 Difference]: Finished difference. Result has 63 places, 22 transitions, 114 flow [2024-06-20 16:26:59,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=114, PETRI_PLACES=63, PETRI_TRANSITIONS=22} [2024-06-20 16:26:59,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-20 16:26:59,723 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 22 transitions, 114 flow [2024-06-20 16:26:59,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:26:59,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 16:26:59,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:26:59,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-20 16:26:59,724 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-20 16:26:59,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 16:26:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash -935074238, now seen corresponding path program 25 times [2024-06-20 16:26:59,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 16:26:59,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900265364] [2024-06-20 16:26:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 16:26:59,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 16:26:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 16:27:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 16:27:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 16:27:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900265364] [2024-06-20 16:27:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900265364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 16:27:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 16:27:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-20 16:27:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661610915] [2024-06-20 16:27:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 16:27:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-20 16:27:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 16:27:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-20 16:27:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-20 16:27:00,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-20 16:27:00,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 22 transitions, 114 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:27:00,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 16:27:00,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-20 16:27:00,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 16:27:01,098 INFO L124 PetriNetUnfolderBase]: 24/65 cut-off events. [2024-06-20 16:27:01,098 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2024-06-20 16:27:01,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 65 events. 24/65 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 176. Up to 24 conditions per place. [2024-06-20 16:27:01,099 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-20 16:27:01,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 31 transitions, 162 flow [2024-06-20 16:27:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-20 16:27:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-20 16:27:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 90 transitions. [2024-06-20 16:27:01,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24193548387096775 [2024-06-20 16:27:01,100 INFO L175 Difference]: Start difference. First operand has 63 places, 22 transitions, 114 flow. Second operand 12 states and 90 transitions. [2024-06-20 16:27:01,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 31 transitions, 162 flow [2024-06-20 16:27:01,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-20 16:27:01,100 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2024-06-20 16:27:01,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2024-06-20 16:27:01,101 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-06-20 16:27:01,101 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2024-06-20 16:27:01,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 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) [2024-06-20 16:27:01,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-20 16:27:01,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-20 16:27:01,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-20 16:27:01,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-20 16:27:01,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-20 16:27:01,108 INFO L445 BasicCegarLoop]: Path program histogram: [35, 25, 20, 15, 10, 10, 7, 7, 6, 6, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 16:27:01,112 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 16:27:01,112 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 16:27:01,117 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-20 16:27:01,117 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-20 16:27:01,118 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 04:27:01 BasicIcfg [2024-06-20 16:27:01,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 16:27:01,120 INFO L158 Benchmark]: Toolchain (without parser) took 262115.88ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 115.9MB in the beginning and 643.9MB in the end (delta: -528.1MB). Peak memory consumption was 638.7MB. Max. memory is 16.1GB. [2024-06-20 16:27:01,120 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:27:01,120 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 16:27:01,120 INFO L158 Benchmark]: CACSL2BoogieTranslator took 555.83ms. Allocated memory is still 153.1MB. Free memory was 115.6MB in the beginning and 82.3MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-20 16:27:01,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.10ms. Allocated memory is still 153.1MB. Free memory was 82.3MB in the beginning and 79.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 16:27:01,120 INFO L158 Benchmark]: Boogie Preprocessor took 61.01ms. Allocated memory is still 153.1MB. Free memory was 79.0MB in the beginning and 76.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 16:27:01,121 INFO L158 Benchmark]: RCFGBuilder took 615.54ms. Allocated memory is still 153.1MB. Free memory was 76.0MB in the beginning and 99.2MB in the end (delta: -23.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-20 16:27:01,121 INFO L158 Benchmark]: TraceAbstraction took 260829.58ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 98.1MB in the beginning and 643.9MB in the end (delta: -545.8MB). Peak memory consumption was 620.1MB. Max. memory is 16.1GB. [2024-06-20 16:27:01,122 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 125.8MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 153.1MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 555.83ms. Allocated memory is still 153.1MB. Free memory was 115.6MB in the beginning and 82.3MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.10ms. Allocated memory is still 153.1MB. Free memory was 82.3MB in the beginning and 79.0MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.01ms. Allocated memory is still 153.1MB. Free memory was 79.0MB in the beginning and 76.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 615.54ms. Allocated memory is still 153.1MB. Free memory was 76.0MB in the beginning and 99.2MB in the end (delta: -23.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 260829.58ms. Allocated memory was 153.1MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 98.1MB in the beginning and 643.9MB in the end (delta: -545.8MB). Peak memory consumption was 620.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: 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, 50 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: 260.7s, OverallIterations: 176, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 117.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11319 SdHoareTripleChecker+Valid, 35.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9581 mSDsluCounter, 10581 SdHoareTripleChecker+Invalid, 30.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9605 mSDsCounter, 2697 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60475 IncrementalHoareTripleChecker+Invalid, 63172 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2697 mSolverCounterUnsat, 976 mSDtfsCounter, 60475 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1965 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1950 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4746 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2408occurred in iteration=68, InterpolantAutomatonStates: 1731, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 140.8s InterpolantComputationTime, 2881 NumberOfCodeBlocks, 2881 NumberOfCodeBlocksAsserted, 176 NumberOfCheckSat, 2705 ConstructedInterpolants, 0 QuantifiedInterpolants, 126075 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 176 InterpolantComputations, 176 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! [2024-06-20 16:27:01,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE