./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:08:11,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:08:11,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:08:11,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:08:11,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:08:11,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:08:11,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:08:11,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:08:11,611 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:08:11,614 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:08:11,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:08:11,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:08:11,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:08:11,616 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:08:11,617 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:08:11,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:08:11,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:08:11,617 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:08:11,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:08:11,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:08:11,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:08:11,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:08:11,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:08:11,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:08:11,619 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:08:11,619 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:08:11,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:08:11,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:08:11,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:08:11,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:08:11,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:08:11,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:08:11,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:08:11,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:08:11,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:08:11,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:08:11,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:08:11,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:08:11,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:08:11,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:08:11,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:08:11,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:08:11,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:08:11,624 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:08:11,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:08:11,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:08:11,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:08:11,890 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:08:11,891 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:08:11,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:08:13,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:08:13,227 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:08:13,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:08:13,241 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c040b4603/02d5110dbf804e58a780067d04fc0ffe/FLAG1b60c6bb1 [2024-06-14 12:08:13,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c040b4603/02d5110dbf804e58a780067d04fc0ffe [2024-06-14 12:08:13,255 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:08:13,262 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:08:13,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 12:08:13,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:08:13,414 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:08:13,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:08:13,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:08:13,419 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:08:13,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:08:13" (1/2) ... [2024-06-14 12:08:13,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313a4459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:13, skipping insertion in model container [2024-06-14 12:08:13,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:08:13" (1/2) ... [2024-06-14 12:08:13,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@82182fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:08:13, skipping insertion in model container [2024-06-14 12:08:13,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:08:13" (2/2) ... [2024-06-14 12:08:13,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313a4459 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13, skipping insertion in model container [2024-06-14 12:08:13,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:08:13" (2/2) ... [2024-06-14 12:08:13,423 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:08:13,475 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:08:13,477 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-14 12:08:13,477 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-14 12:08:13,477 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:08:13,478 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-14 12:08:13,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:08:13,822 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:08:13,833 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:08:13,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:08:13,967 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:08:13,969 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13 WrapperNode [2024-06-14 12:08:13,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:08:13,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:08:13,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:08:13,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:08:13,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,025 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-14 12:08:14,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:08:14,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:08:14,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:08:14,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:08:14,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,046 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 12:08:14,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:08:14,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:08:14,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:08:14,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:08:14,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (1/1) ... [2024-06-14 12:08:14,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:08:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:08:14,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 12:08:14,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 12:08:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:08:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:08:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:08:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:08:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:08:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:08:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:08:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:08:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:08:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:08:14,166 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:08:14,268 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:08:14,270 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:08:14,514 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:08:14,515 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:08:14,670 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:08:14,671 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:08:14,673 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:08:14 BoogieIcfgContainer [2024-06-14 12:08:14,674 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:08:14,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:08:14,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:08:14,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:08:14,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:08:13" (1/4) ... [2024-06-14 12:08:14,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442b0cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:08:14, skipping insertion in model container [2024-06-14 12:08:14,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:08:13" (2/4) ... [2024-06-14 12:08:14,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442b0cbe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:08:14, skipping insertion in model container [2024-06-14 12:08:14,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:08:13" (3/4) ... [2024-06-14 12:08:14,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442b0cbe and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:08:14, skipping insertion in model container [2024-06-14 12:08:14,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:08:14" (4/4) ... [2024-06-14 12:08:14,682 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:08:14,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:08:14,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:08:14,695 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:08:14,730 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:08:14,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:08:14,779 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 12:08:14,779 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:08:14,781 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 40 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. [2024-06-14 12:08:14,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 12:08:14,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 12:08:14,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:08:14,800 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;@61645572, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:08:14,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:08:14,804 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:08:14,804 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:08:14,804 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:08:14,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:14,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:08:14,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:14,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:14,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1505849308, now seen corresponding path program 1 times [2024-06-14 12:08:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:14,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608941058] [2024-06-14 12:08:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:14,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:15,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608941058] [2024-06-14 12:08:15,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608941058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:15,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:15,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:08:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108635430] [2024-06-14 12:08:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:15,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:08:15,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:08:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:08:15,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 12:08:15,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:15,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:15,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 12:08:15,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:16,016 INFO L124 PetriNetUnfolderBase]: 162/307 cut-off events. [2024-06-14 12:08:16,016 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 12:08:16,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 307 events. 162/307 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1113 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-14 12:08:16,020 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 23 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 12:08:16,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 119 flow [2024-06-14 12:08:16,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:08:16,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:08:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-06-14 12:08:16,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-06-14 12:08:16,030 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 52 transitions. [2024-06-14 12:08:16,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 119 flow [2024-06-14 12:08:16,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:08:16,033 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 12:08:16,034 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} [2024-06-14 12:08:16,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 12:08:16,037 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 12:08:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:16,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:16,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:08:16,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:16,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash -282759621, now seen corresponding path program 1 times [2024-06-14 12:08:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768502865] [2024-06-14 12:08:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:16,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:16,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768502865] [2024-06-14 12:08:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768502865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:16,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:16,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:08:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817383457] [2024-06-14 12:08:16,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:16,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:08:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:08:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:08:16,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-14 12:08:16,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:16,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:16,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-14 12:08:16,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:16,611 INFO L124 PetriNetUnfolderBase]: 159/304 cut-off events. [2024-06-14 12:08:16,612 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 12:08:16,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 304 events. 159/304 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1089 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-14 12:08:16,617 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-14 12:08:16,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 161 flow [2024-06-14 12:08:16,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:08:16,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:08:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-06-14 12:08:16,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-14 12:08:16,620 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 66 transitions. [2024-06-14 12:08:16,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 161 flow [2024-06-14 12:08:16,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:08:16,623 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 12:08:16,624 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} [2024-06-14 12:08:16,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 12:08:16,624 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 12:08:16,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:16,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:16,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:16,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:08:16,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:16,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:16,628 INFO L85 PathProgramCache]: Analyzing trace with hash -175612531, now seen corresponding path program 1 times [2024-06-14 12:08:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691223156] [2024-06-14 12:08:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:16,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:17,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:17,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691223156] [2024-06-14 12:08:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691223156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:17,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:17,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 12:08:17,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103916505] [2024-06-14 12:08:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:17,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 12:08:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:17,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 12:08:17,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 12:08:17,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:08:17,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:17,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:17,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:08:17,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:17,254 INFO L124 PetriNetUnfolderBase]: 187/339 cut-off events. [2024-06-14 12:08:17,254 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-14 12:08:17,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 339 events. 187/339 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 67 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-14 12:08:17,257 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-14 12:08:17,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 255 flow [2024-06-14 12:08:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:08:17,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:08:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-14 12:08:17,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290322580645161 [2024-06-14 12:08:17,261 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 82 transitions. [2024-06-14 12:08:17,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 255 flow [2024-06-14 12:08:17,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 246 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:08:17,264 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 162 flow [2024-06-14 12:08:17,264 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2024-06-14 12:08:17,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-14 12:08:17,266 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 162 flow [2024-06-14 12:08:17,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:17,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:17,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:17,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:08:17,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:17,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:17,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1149020006, now seen corresponding path program 1 times [2024-06-14 12:08:17,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:17,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439119955] [2024-06-14 12:08:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:17,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:17,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439119955] [2024-06-14 12:08:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439119955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:08:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273767819] [2024-06-14 12:08:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:08:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:08:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:08:17,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:08:17,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:17,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:17,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:08:17,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:18,087 INFO L124 PetriNetUnfolderBase]: 188/341 cut-off events. [2024-06-14 12:08:18,088 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-14 12:08:18,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 341 events. 188/341 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1198 event pairs, 46 based on Foata normal form. 3/344 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-14 12:08:18,090 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 14 changer transitions 0/56 dead transitions. [2024-06-14 12:08:18,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 340 flow [2024-06-14 12:08:18,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:08:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:08:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 12:08:18,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-14 12:08:18,093 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 162 flow. Second operand 6 states and 96 transitions. [2024-06-14 12:08:18,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 340 flow [2024-06-14 12:08:18,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 336 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 12:08:18,099 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 214 flow [2024-06-14 12:08:18,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-14 12:08:18,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-14 12:08:18,100 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 214 flow [2024-06-14 12:08:18,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:18,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:18,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:18,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:08:18,101 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:18,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1260475274, now seen corresponding path program 1 times [2024-06-14 12:08:18,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:18,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042619696] [2024-06-14 12:08:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:18,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:18,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:18,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:18,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042619696] [2024-06-14 12:08:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042619696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:18,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:08:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311324316] [2024-06-14 12:08:18,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:18,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:08:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:18,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:08:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:08:18,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-14 12:08:18,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:18,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:18,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-14 12:08:18,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:19,065 INFO L124 PetriNetUnfolderBase]: 189/344 cut-off events. [2024-06-14 12:08:19,065 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-14 12:08:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 344 events. 189/344 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1218 event pairs, 24 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-14 12:08:19,067 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/58 dead transitions. [2024-06-14 12:08:19,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 386 flow [2024-06-14 12:08:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-14 12:08:19,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2024-06-14 12:08:19,068 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 214 flow. Second operand 7 states and 105 transitions. [2024-06-14 12:08:19,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 386 flow [2024-06-14 12:08:19,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 354 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:08:19,070 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 217 flow [2024-06-14 12:08:19,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-14 12:08:19,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 12:08:19,071 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 217 flow [2024-06-14 12:08:19,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:19,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:19,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:08:19,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:19,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:19,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1934851801, now seen corresponding path program 1 times [2024-06-14 12:08:19,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:19,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688403390] [2024-06-14 12:08:19,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:19,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:19,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:19,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688403390] [2024-06-14 12:08:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688403390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:19,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:08:19,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706794162] [2024-06-14 12:08:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:19,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:08:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:19,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:08:19,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:08:19,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:19,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2024-06-14 12:08:19,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:19,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:19,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:19,660 INFO L124 PetriNetUnfolderBase]: 187/341 cut-off events. [2024-06-14 12:08:19,660 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-14 12:08:19,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 341 events. 187/341 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1194 event pairs, 47 based on Foata normal form. 1/342 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-14 12:08:19,662 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 35 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2024-06-14 12:08:19,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 311 flow [2024-06-14 12:08:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:08:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:08:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-14 12:08:19,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:08:19,664 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 217 flow. Second operand 5 states and 60 transitions. [2024-06-14 12:08:19,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 311 flow [2024-06-14 12:08:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 270 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:19,666 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 193 flow [2024-06-14 12:08:19,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=193, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-14 12:08:19,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 12:08:19,667 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 193 flow [2024-06-14 12:08:19,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 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) [2024-06-14 12:08:19,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:19,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:19,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:08:19,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:19,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:19,668 INFO L85 PathProgramCache]: Analyzing trace with hash 137115187, now seen corresponding path program 1 times [2024-06-14 12:08:19,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511536693] [2024-06-14 12:08:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511536693] [2024-06-14 12:08:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511536693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:08:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975213744] [2024-06-14 12:08:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:08:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:08:20,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:08:20,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:20,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:20,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:20,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:20,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:20,393 INFO L124 PetriNetUnfolderBase]: 181/332 cut-off events. [2024-06-14 12:08:20,393 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2024-06-14 12:08:20,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 332 events. 181/332 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1134 event pairs, 44 based on Foata normal form. 3/335 useless extension candidates. Maximal degree in co-relation 1128. Up to 311 conditions per place. [2024-06-14 12:08:20,395 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 12:08:20,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 311 flow [2024-06-14 12:08:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:08:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:08:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-14 12:08:20,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-14 12:08:20,396 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 193 flow. Second operand 6 states and 71 transitions. [2024-06-14 12:08:20,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 311 flow [2024-06-14 12:08:20,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 48 transitions, 296 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 12:08:20,398 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 211 flow [2024-06-14 12:08:20,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-14 12:08:20,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-14 12:08:20,399 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 211 flow [2024-06-14 12:08:20,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:20,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:20,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:08:20,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:20,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -514451052, now seen corresponding path program 1 times [2024-06-14 12:08:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44362598] [2024-06-14 12:08:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:20,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44362598] [2024-06-14 12:08:20,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44362598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:20,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:20,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:08:20,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194273579] [2024-06-14 12:08:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:08:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:08:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:08:20,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:20,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:20,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:20,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:20,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:20,996 INFO L124 PetriNetUnfolderBase]: 182/334 cut-off events. [2024-06-14 12:08:20,996 INFO L125 PetriNetUnfolderBase]: For 1009/1009 co-relation queries the response was YES. [2024-06-14 12:08:20,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 334 events. 182/334 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1159 event pairs, 43 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 1200. Up to 288 conditions per place. [2024-06-14 12:08:20,998 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 13 changer transitions 0/52 dead transitions. [2024-06-14 12:08:20,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 362 flow [2024-06-14 12:08:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:08:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:08:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 12:08:20,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-14 12:08:21,000 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 211 flow. Second operand 6 states and 77 transitions. [2024-06-14 12:08:21,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 52 transitions, 362 flow [2024-06-14 12:08:21,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:08:21,002 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 242 flow [2024-06-14 12:08:21,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-14 12:08:21,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-14 12:08:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 242 flow [2024-06-14 12:08:21,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:21,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:21,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:21,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:08:21,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:21,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash 328281990, now seen corresponding path program 2 times [2024-06-14 12:08:21,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:21,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565364287] [2024-06-14 12:08:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:21,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:21,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:21,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565364287] [2024-06-14 12:08:21,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565364287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:21,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:21,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:08:21,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418577201] [2024-06-14 12:08:21,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:21,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:08:21,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:21,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:08:21,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:08:21,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:21,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:21,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:21,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:21,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:21,619 INFO L124 PetriNetUnfolderBase]: 177/324 cut-off events. [2024-06-14 12:08:21,620 INFO L125 PetriNetUnfolderBase]: For 1164/1164 co-relation queries the response was YES. [2024-06-14 12:08:21,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 324 events. 177/324 cut-off events. For 1164/1164 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 42 based on Foata normal form. 1/325 useless extension candidates. Maximal degree in co-relation 1201. Up to 309 conditions per place. [2024-06-14 12:08:21,622 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 8 changer transitions 0/48 dead transitions. [2024-06-14 12:08:21,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 348 flow [2024-06-14 12:08:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:08:21,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:08:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-14 12:08:21,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:08:21,623 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 242 flow. Second operand 6 states and 69 transitions. [2024-06-14 12:08:21,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 348 flow [2024-06-14 12:08:21,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 333 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:08:21,625 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 248 flow [2024-06-14 12:08:21,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=248, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-14 12:08:21,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-14 12:08:21,626 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 248 flow [2024-06-14 12:08:21,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:21,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:21,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:08:21,627 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:21,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:21,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1553636556, now seen corresponding path program 1 times [2024-06-14 12:08:21,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:21,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089794867] [2024-06-14 12:08:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:21,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:22,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:22,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089794867] [2024-06-14 12:08:22,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089794867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:22,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:22,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:08:22,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641564837] [2024-06-14 12:08:22,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:22,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:08:22,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:08:22,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:08:22,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:22,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 248 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:22,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:22,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:22,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:22,394 INFO L124 PetriNetUnfolderBase]: 215/386 cut-off events. [2024-06-14 12:08:22,394 INFO L125 PetriNetUnfolderBase]: For 1838/1838 co-relation queries the response was YES. [2024-06-14 12:08:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 386 events. 215/386 cut-off events. For 1838/1838 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1391 event pairs, 50 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1435. Up to 276 conditions per place. [2024-06-14 12:08:22,397 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 46 selfloop transitions, 17 changer transitions 0/65 dead transitions. [2024-06-14 12:08:22,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 460 flow [2024-06-14 12:08:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:22,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 12:08:22,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:08:22,399 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 248 flow. Second operand 7 states and 93 transitions. [2024-06-14 12:08:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 460 flow [2024-06-14 12:08:22,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 426 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:22,402 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 297 flow [2024-06-14 12:08:22,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-14 12:08:22,404 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-14 12:08:22,406 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 297 flow [2024-06-14 12:08:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:22,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:22,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:22,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:08:22,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:22,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1587045232, now seen corresponding path program 2 times [2024-06-14 12:08:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:22,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200068867] [2024-06-14 12:08:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200068867] [2024-06-14 12:08:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200068867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:22,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:08:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773279776] [2024-06-14 12:08:22,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:22,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:08:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:22,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:08:22,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:08:22,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:22,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:22,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:22,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:22,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:23,134 INFO L124 PetriNetUnfolderBase]: 224/401 cut-off events. [2024-06-14 12:08:23,134 INFO L125 PetriNetUnfolderBase]: For 2087/2087 co-relation queries the response was YES. [2024-06-14 12:08:23,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 401 events. 224/401 cut-off events. For 2087/2087 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1441 event pairs, 52 based on Foata normal form. 3/404 useless extension candidates. Maximal degree in co-relation 1647. Up to 377 conditions per place. [2024-06-14 12:08:23,137 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 10 changer transitions 0/60 dead transitions. [2024-06-14 12:08:23,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 449 flow [2024-06-14 12:08:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:23,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:23,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-14 12:08:23,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-14 12:08:23,138 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 297 flow. Second operand 7 states and 80 transitions. [2024-06-14 12:08:23,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 449 flow [2024-06-14 12:08:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 434 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-14 12:08:23,142 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 325 flow [2024-06-14 12:08:23,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-14 12:08:23,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 12:08:23,142 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 325 flow [2024-06-14 12:08:23,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:23,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:23,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:23,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:08:23,143 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:23,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:23,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1198929262, now seen corresponding path program 3 times [2024-06-14 12:08:23,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:23,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587955427] [2024-06-14 12:08:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:23,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587955427] [2024-06-14 12:08:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587955427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:23,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:23,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:08:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672513317] [2024-06-14 12:08:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:08:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:08:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:08:23,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:23,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 325 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:23,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:23,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:23,861 INFO L124 PetriNetUnfolderBase]: 218/392 cut-off events. [2024-06-14 12:08:23,861 INFO L125 PetriNetUnfolderBase]: For 2404/2404 co-relation queries the response was YES. [2024-06-14 12:08:23,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1679 conditions, 392 events. 218/392 cut-off events. For 2404/2404 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1409 event pairs, 46 based on Foata normal form. 3/395 useless extension candidates. Maximal degree in co-relation 1646. Up to 356 conditions per place. [2024-06-14 12:08:23,864 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 49 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-06-14 12:08:23,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 495 flow [2024-06-14 12:08:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-14 12:08:23,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:08:23,865 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 325 flow. Second operand 7 states and 84 transitions. [2024-06-14 12:08:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 495 flow [2024-06-14 12:08:23,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 468 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:23,870 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 351 flow [2024-06-14 12:08:23,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=351, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-14 12:08:23,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 12:08:23,872 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 351 flow [2024-06-14 12:08:23,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:23,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:23,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:23,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:08:23,873 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:23,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:23,873 INFO L85 PathProgramCache]: Analyzing trace with hash -470005645, now seen corresponding path program 1 times [2024-06-14 12:08:23,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846783397] [2024-06-14 12:08:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:24,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:24,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846783397] [2024-06-14 12:08:24,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846783397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:24,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:24,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:08:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520493884] [2024-06-14 12:08:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:24,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:08:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:08:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:08:24,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:24,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:24,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:24,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:24,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:24,685 INFO L124 PetriNetUnfolderBase]: 221/397 cut-off events. [2024-06-14 12:08:24,685 INFO L125 PetriNetUnfolderBase]: For 2632/2632 co-relation queries the response was YES. [2024-06-14 12:08:24,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1745 conditions, 397 events. 221/397 cut-off events. For 2632/2632 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1432 event pairs, 46 based on Foata normal form. 1/398 useless extension candidates. Maximal degree in co-relation 1712. Up to 334 conditions per place. [2024-06-14 12:08:24,687 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 52 selfloop transitions, 17 changer transitions 0/71 dead transitions. [2024-06-14 12:08:24,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 571 flow [2024-06-14 12:08:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-14 12:08:24,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41013824884792627 [2024-06-14 12:08:24,688 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 351 flow. Second operand 7 states and 89 transitions. [2024-06-14 12:08:24,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 571 flow [2024-06-14 12:08:24,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 71 transitions, 536 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:24,693 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 383 flow [2024-06-14 12:08:24,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-06-14 12:08:24,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:08:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 383 flow [2024-06-14 12:08:24,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:24,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:24,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:08:24,695 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:24,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash -469915435, now seen corresponding path program 2 times [2024-06-14 12:08:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164416656] [2024-06-14 12:08:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:25,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164416656] [2024-06-14 12:08:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164416656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:25,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:25,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:08:25,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793027432] [2024-06-14 12:08:25,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:25,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:08:25,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:25,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:08:25,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:08:25,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:25,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 383 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:25,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:25,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:25,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:25,564 INFO L124 PetriNetUnfolderBase]: 219/394 cut-off events. [2024-06-14 12:08:25,564 INFO L125 PetriNetUnfolderBase]: For 2895/2895 co-relation queries the response was YES. [2024-06-14 12:08:25,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1765 conditions, 394 events. 219/394 cut-off events. For 2895/2895 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1416 event pairs, 46 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1731. Up to 347 conditions per place. [2024-06-14 12:08:25,566 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 50 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-14 12:08:25,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 537 flow [2024-06-14 12:08:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:25,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 12:08:25,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-14 12:08:25,568 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 383 flow. Second operand 7 states and 85 transitions. [2024-06-14 12:08:25,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 537 flow [2024-06-14 12:08:25,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 512 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-14 12:08:25,572 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 393 flow [2024-06-14 12:08:25,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-14 12:08:25,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-14 12:08:25,573 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 393 flow [2024-06-14 12:08:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:25,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:25,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:25,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:08:25,573 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:25,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash -466196210, now seen corresponding path program 1 times [2024-06-14 12:08:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535128361] [2024-06-14 12:08:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:26,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:26,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535128361] [2024-06-14 12:08:26,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535128361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:26,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:26,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:08:26,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384442061] [2024-06-14 12:08:26,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:26,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:08:26,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:26,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:08:26,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:08:26,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:26,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 393 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:26,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:26,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:26,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:26,336 INFO L124 PetriNetUnfolderBase]: 228/409 cut-off events. [2024-06-14 12:08:26,336 INFO L125 PetriNetUnfolderBase]: For 3517/3517 co-relation queries the response was YES. [2024-06-14 12:08:26,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 409 events. 228/409 cut-off events. For 3517/3517 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1504 event pairs, 45 based on Foata normal form. 3/412 useless extension candidates. Maximal degree in co-relation 1834. Up to 287 conditions per place. [2024-06-14 12:08:26,338 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 24 changer transitions 0/79 dead transitions. [2024-06-14 12:08:26,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 643 flow [2024-06-14 12:08:26,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:08:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:08:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 12:08:26,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2024-06-14 12:08:26,339 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 393 flow. Second operand 7 states and 98 transitions. [2024-06-14 12:08:26,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 643 flow [2024-06-14 12:08:26,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 605 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:26,344 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 424 flow [2024-06-14 12:08:26,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-14 12:08:26,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-14 12:08:26,344 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 424 flow [2024-06-14 12:08:26,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:26,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:26,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:26,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:08:26,345 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:26,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:26,345 INFO L85 PathProgramCache]: Analyzing trace with hash -466190630, now seen corresponding path program 2 times [2024-06-14 12:08:26,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:26,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592833741] [2024-06-14 12:08:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:26,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:26,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592833741] [2024-06-14 12:08:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592833741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:26,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516056663] [2024-06-14 12:08:26,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:26,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:26,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:26,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:26,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:26,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:26,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:27,196 INFO L124 PetriNetUnfolderBase]: 237/424 cut-off events. [2024-06-14 12:08:27,196 INFO L125 PetriNetUnfolderBase]: For 4077/4077 co-relation queries the response was YES. [2024-06-14 12:08:27,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 424 events. 237/424 cut-off events. For 4077/4077 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1566 event pairs, 51 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 1970. Up to 295 conditions per place. [2024-06-14 12:08:27,199 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 54 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2024-06-14 12:08:27,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 79 transitions, 674 flow [2024-06-14 12:08:27,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:27,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:08:27,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:08:27,201 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 424 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:08:27,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 79 transitions, 674 flow [2024-06-14 12:08:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 79 transitions, 614 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:27,208 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 435 flow [2024-06-14 12:08:27,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2024-06-14 12:08:27,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-14 12:08:27,209 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 435 flow [2024-06-14 12:08:27,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:27,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:27,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:27,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:08:27,210 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:27,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:27,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1953770391, now seen corresponding path program 1 times [2024-06-14 12:08:27,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:27,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913486753] [2024-06-14 12:08:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:27,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:27,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:27,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913486753] [2024-06-14 12:08:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913486753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:27,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387613785] [2024-06-14 12:08:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:27,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:27,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 435 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:27,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:27,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:27,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:28,201 INFO L124 PetriNetUnfolderBase]: 233/418 cut-off events. [2024-06-14 12:08:28,201 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-14 12:08:28,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 418 events. 233/418 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1535 event pairs, 45 based on Foata normal form. 2/420 useless extension candidates. Maximal degree in co-relation 1937. Up to 389 conditions per place. [2024-06-14 12:08:28,203 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 59 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-14 12:08:28,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 617 flow [2024-06-14 12:08:28,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 12:08:28,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-14 12:08:28,205 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 435 flow. Second operand 8 states and 89 transitions. [2024-06-14 12:08:28,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 617 flow [2024-06-14 12:08:28,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 579 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:28,210 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 448 flow [2024-06-14 12:08:28,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2024-06-14 12:08:28,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 12:08:28,211 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 448 flow [2024-06-14 12:08:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:28,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:28,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:08:28,213 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 278017642, now seen corresponding path program 3 times [2024-06-14 12:08:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:28,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596352128] [2024-06-14 12:08:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:28,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596352128] [2024-06-14 12:08:28,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596352128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:28,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:28,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507925315] [2024-06-14 12:08:28,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:28,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:28,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:28,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:28,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:28,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:28,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:28,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:29,089 INFO L124 PetriNetUnfolderBase]: 242/433 cut-off events. [2024-06-14 12:08:29,089 INFO L125 PetriNetUnfolderBase]: For 4765/4765 co-relation queries the response was YES. [2024-06-14 12:08:29,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 433 events. 242/433 cut-off events. For 4765/4765 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1612 event pairs, 46 based on Foata normal form. 3/436 useless extension candidates. Maximal degree in co-relation 1995. Up to 384 conditions per place. [2024-06-14 12:08:29,092 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 62 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-14 12:08:29,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 79 transitions, 656 flow [2024-06-14 12:08:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:29,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:29,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 12:08:29,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-14 12:08:29,093 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 448 flow. Second operand 8 states and 95 transitions. [2024-06-14 12:08:29,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 79 transitions, 656 flow [2024-06-14 12:08:29,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 618 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:29,099 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 467 flow [2024-06-14 12:08:29,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=467, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-14 12:08:29,100 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-14 12:08:29,100 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 467 flow [2024-06-14 12:08:29,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:29,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:29,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:29,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:08:29,101 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:29,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:29,101 INFO L85 PathProgramCache]: Analyzing trace with hash 285369292, now seen corresponding path program 4 times [2024-06-14 12:08:29,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:29,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460318722] [2024-06-14 12:08:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:29,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:29,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:29,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460318722] [2024-06-14 12:08:29,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460318722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:29,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:29,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:29,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358157307] [2024-06-14 12:08:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:29,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:29,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:29,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:29,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 467 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:29,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:29,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:29,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:29,832 INFO L124 PetriNetUnfolderBase]: 236/424 cut-off events. [2024-06-14 12:08:29,833 INFO L125 PetriNetUnfolderBase]: For 4872/4872 co-relation queries the response was YES. [2024-06-14 12:08:29,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 424 events. 236/424 cut-off events. For 4872/4872 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1580 event pairs, 48 based on Foata normal form. 3/427 useless extension candidates. Maximal degree in co-relation 1946. Up to 387 conditions per place. [2024-06-14 12:08:29,835 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 63 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-14 12:08:29,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 77 transitions, 647 flow [2024-06-14 12:08:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:29,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-14 12:08:29,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-14 12:08:29,836 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 467 flow. Second operand 8 states and 91 transitions. [2024-06-14 12:08:29,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 77 transitions, 647 flow [2024-06-14 12:08:29,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 606 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:29,843 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 455 flow [2024-06-14 12:08:29,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=455, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-14 12:08:29,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 12:08:29,844 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 455 flow [2024-06-14 12:08:29,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:29,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:29,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:29,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:08:29,845 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash 285646339, now seen corresponding path program 1 times [2024-06-14 12:08:29,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:29,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303550469] [2024-06-14 12:08:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:30,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:30,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303550469] [2024-06-14 12:08:30,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303550469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:30,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478366369] [2024-06-14 12:08:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:30,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:30,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:30,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:30,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:30,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 455 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:30,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:30,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:30,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:30,959 INFO L124 PetriNetUnfolderBase]: 233/419 cut-off events. [2024-06-14 12:08:30,960 INFO L125 PetriNetUnfolderBase]: For 4904/4904 co-relation queries the response was YES. [2024-06-14 12:08:30,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1944 conditions, 419 events. 233/419 cut-off events. For 4904/4904 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1541 event pairs, 46 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 1903. Up to 392 conditions per place. [2024-06-14 12:08:30,962 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 62 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-14 12:08:30,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 75 transitions, 623 flow [2024-06-14 12:08:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 12:08:30,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-14 12:08:30,963 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 455 flow. Second operand 8 states and 87 transitions. [2024-06-14 12:08:30,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 75 transitions, 623 flow [2024-06-14 12:08:30,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 566 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:08:30,969 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 424 flow [2024-06-14 12:08:30,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=424, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-14 12:08:30,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-14 12:08:30,970 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 424 flow [2024-06-14 12:08:30,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:30,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:30,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:08:30,971 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:30,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1485588375, now seen corresponding path program 1 times [2024-06-14 12:08:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976221223] [2024-06-14 12:08:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:31,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976221223] [2024-06-14 12:08:31,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976221223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:31,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:31,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459857963] [2024-06-14 12:08:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:31,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:31,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 424 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:31,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:31,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:31,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:31,906 INFO L124 PetriNetUnfolderBase]: 237/427 cut-off events. [2024-06-14 12:08:31,906 INFO L125 PetriNetUnfolderBase]: For 5312/5312 co-relation queries the response was YES. [2024-06-14 12:08:31,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 427 events. 237/427 cut-off events. For 5312/5312 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1601 event pairs, 33 based on Foata normal form. 2/429 useless extension candidates. Maximal degree in co-relation 1910. Up to 322 conditions per place. [2024-06-14 12:08:31,908 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 61 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-14 12:08:31,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 676 flow [2024-06-14 12:08:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:08:31,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-14 12:08:31,909 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 424 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:08:31,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 676 flow [2024-06-14 12:08:31,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 646 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:31,921 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 448 flow [2024-06-14 12:08:31,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=448, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-06-14 12:08:31,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2024-06-14 12:08:31,922 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 448 flow [2024-06-14 12:08:31,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:31,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:31,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:31,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:08:31,922 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:31,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1485648949, now seen corresponding path program 1 times [2024-06-14 12:08:31,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:31,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333815223] [2024-06-14 12:08:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:31,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:32,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:32,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333815223] [2024-06-14 12:08:32,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333815223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:32,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280861721] [2024-06-14 12:08:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:32,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:32,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:32,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:32,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:32,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:32,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:32,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:32,881 INFO L124 PetriNetUnfolderBase]: 240/432 cut-off events. [2024-06-14 12:08:32,882 INFO L125 PetriNetUnfolderBase]: For 5606/5606 co-relation queries the response was YES. [2024-06-14 12:08:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 432 events. 240/432 cut-off events. For 5606/5606 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1631 event pairs, 38 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 1970. Up to 324 conditions per place. [2024-06-14 12:08:32,885 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 23 changer transitions 0/94 dead transitions. [2024-06-14 12:08:32,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 777 flow [2024-06-14 12:08:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-14 12:08:32,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-14 12:08:32,886 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 448 flow. Second operand 8 states and 101 transitions. [2024-06-14 12:08:32,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 94 transitions, 777 flow [2024-06-14 12:08:32,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 733 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:32,895 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 529 flow [2024-06-14 12:08:32,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=529, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-14 12:08:32,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-14 12:08:32,896 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 529 flow [2024-06-14 12:08:32,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:32,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:32,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:32,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:08:32,896 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:32,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1685272247, now seen corresponding path program 2 times [2024-06-14 12:08:32,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:32,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947075856] [2024-06-14 12:08:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:32,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947075856] [2024-06-14 12:08:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947075856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:33,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:33,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:33,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844655782] [2024-06-14 12:08:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:33,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:33,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:33,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:33,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 529 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:33,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:33,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:33,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:33,705 INFO L124 PetriNetUnfolderBase]: 244/440 cut-off events. [2024-06-14 12:08:33,705 INFO L125 PetriNetUnfolderBase]: For 6494/6494 co-relation queries the response was YES. [2024-06-14 12:08:33,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 440 events. 244/440 cut-off events. For 6494/6494 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1675 event pairs, 49 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2091. Up to 372 conditions per place. [2024-06-14 12:08:33,708 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 72 selfloop transitions, 18 changer transitions 0/92 dead transitions. [2024-06-14 12:08:33,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 92 transitions, 752 flow [2024-06-14 12:08:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:33,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 12:08:33,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-14 12:08:33,710 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 529 flow. Second operand 8 states and 97 transitions. [2024-06-14 12:08:33,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 92 transitions, 752 flow [2024-06-14 12:08:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 714 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:33,719 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 540 flow [2024-06-14 12:08:33,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=540, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-06-14 12:08:33,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-14 12:08:33,720 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 540 flow [2024-06-14 12:08:33,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:33,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:33,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:08:33,721 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:33,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1488450109, now seen corresponding path program 2 times [2024-06-14 12:08:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312305364] [2024-06-14 12:08:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:34,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:34,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312305364] [2024-06-14 12:08:34,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312305364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:34,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:34,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723135542] [2024-06-14 12:08:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:34,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:34,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 540 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:34,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:34,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:34,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:34,703 INFO L124 PetriNetUnfolderBase]: 253/455 cut-off events. [2024-06-14 12:08:34,703 INFO L125 PetriNetUnfolderBase]: For 7271/7271 co-relation queries the response was YES. [2024-06-14 12:08:34,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 455 events. 253/455 cut-off events. For 7271/7271 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1752 event pairs, 46 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 2138. Up to 313 conditions per place. [2024-06-14 12:08:34,706 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 60 selfloop transitions, 34 changer transitions 0/96 dead transitions. [2024-06-14 12:08:34,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 96 transitions, 791 flow [2024-06-14 12:08:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:34,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:34,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 12:08:34,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-14 12:08:34,707 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 540 flow. Second operand 8 states and 103 transitions. [2024-06-14 12:08:34,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 96 transitions, 791 flow [2024-06-14 12:08:34,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 753 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:34,717 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 612 flow [2024-06-14 12:08:34,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=612, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2024-06-14 12:08:34,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2024-06-14 12:08:34,718 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 612 flow [2024-06-14 12:08:34,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:34,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:34,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:34,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:08:34,718 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:34,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1488445335, now seen corresponding path program 3 times [2024-06-14 12:08:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:34,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2689083] [2024-06-14 12:08:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2689083] [2024-06-14 12:08:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2689083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:35,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:35,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658318567] [2024-06-14 12:08:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:35,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:35,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:35,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 612 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:35,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:35,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:35,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:35,582 INFO L124 PetriNetUnfolderBase]: 250/450 cut-off events. [2024-06-14 12:08:35,583 INFO L125 PetriNetUnfolderBase]: For 7086/7086 co-relation queries the response was YES. [2024-06-14 12:08:35,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 450 events. 250/450 cut-off events. For 7086/7086 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1721 event pairs, 50 based on Foata normal form. 2/452 useless extension candidates. Maximal degree in co-relation 2174. Up to 397 conditions per place. [2024-06-14 12:08:35,585 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-06-14 12:08:35,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 822 flow [2024-06-14 12:08:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:35,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-14 12:08:35,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 12:08:35,587 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 612 flow. Second operand 8 states and 94 transitions. [2024-06-14 12:08:35,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 822 flow [2024-06-14 12:08:35,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 746 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:35,597 INFO L231 Difference]: Finished difference. Result has 92 places, 81 transitions, 572 flow [2024-06-14 12:08:35,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=572, PETRI_PLACES=92, PETRI_TRANSITIONS=81} [2024-06-14 12:08:35,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-06-14 12:08:35,598 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 81 transitions, 572 flow [2024-06-14 12:08:35,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:35,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:35,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:35,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:08:35,600 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:35,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:35,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1599267979, now seen corresponding path program 3 times [2024-06-14 12:08:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:35,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290956859] [2024-06-14 12:08:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:35,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:36,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:36,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290956859] [2024-06-14 12:08:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290956859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:36,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854306236] [2024-06-14 12:08:36,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:36,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:36,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:36,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 81 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:36,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:36,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:36,485 INFO L124 PetriNetUnfolderBase]: 253/455 cut-off events. [2024-06-14 12:08:36,485 INFO L125 PetriNetUnfolderBase]: For 7244/7244 co-relation queries the response was YES. [2024-06-14 12:08:36,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 455 events. 253/455 cut-off events. For 7244/7244 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1758 event pairs, 39 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2157. Up to 375 conditions per place. [2024-06-14 12:08:36,488 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 25 changer transitions 0/98 dead transitions. [2024-06-14 12:08:36,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 98 transitions, 829 flow [2024-06-14 12:08:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 12:08:36,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-14 12:08:36,490 INFO L175 Difference]: Start difference. First operand has 92 places, 81 transitions, 572 flow. Second operand 8 states and 98 transitions. [2024-06-14 12:08:36,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 98 transitions, 829 flow [2024-06-14 12:08:36,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 788 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:36,500 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 626 flow [2024-06-14 12:08:36,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=626, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2024-06-14 12:08:36,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-14 12:08:36,501 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 626 flow [2024-06-14 12:08:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:36,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:36,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:36,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:08:36,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:36,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:36,502 INFO L85 PathProgramCache]: Analyzing trace with hash -763754803, now seen corresponding path program 4 times [2024-06-14 12:08:36,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:36,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932942037] [2024-06-14 12:08:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:36,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:37,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:37,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:37,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932942037] [2024-06-14 12:08:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932942037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:37,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:37,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:37,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443934952] [2024-06-14 12:08:37,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:37,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:37,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:37,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 626 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:37,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:37,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:37,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:37,344 INFO L124 PetriNetUnfolderBase]: 256/460 cut-off events. [2024-06-14 12:08:37,344 INFO L125 PetriNetUnfolderBase]: For 7834/7834 co-relation queries the response was YES. [2024-06-14 12:08:37,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2287 conditions, 460 events. 256/460 cut-off events. For 7834/7834 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1785 event pairs, 41 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 2239. Up to 364 conditions per place. [2024-06-14 12:08:37,347 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 30 changer transitions 0/108 dead transitions. [2024-06-14 12:08:37,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 973 flow [2024-06-14 12:08:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:37,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 12:08:37,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274193548387097 [2024-06-14 12:08:37,348 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 626 flow. Second operand 8 states and 106 transitions. [2024-06-14 12:08:37,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 973 flow [2024-06-14 12:08:37,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 930 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:08:37,359 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 705 flow [2024-06-14 12:08:37,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=705, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-06-14 12:08:37,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-14 12:08:37,360 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 705 flow [2024-06-14 12:08:37,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:37,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:37,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:37,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:08:37,361 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:37,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:37,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1567006813, now seen corresponding path program 5 times [2024-06-14 12:08:37,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:37,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367497725] [2024-06-14 12:08:37,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367497725] [2024-06-14 12:08:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367497725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685720733] [2024-06-14 12:08:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:38,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:38,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 705 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:38,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:38,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:38,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:38,347 INFO L124 PetriNetUnfolderBase]: 259/465 cut-off events. [2024-06-14 12:08:38,347 INFO L125 PetriNetUnfolderBase]: For 8452/8452 co-relation queries the response was YES. [2024-06-14 12:08:38,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 465 events. 259/465 cut-off events. For 8452/8452 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1806 event pairs, 45 based on Foata normal form. 1/466 useless extension candidates. Maximal degree in co-relation 2353. Up to 391 conditions per place. [2024-06-14 12:08:38,350 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-06-14 12:08:38,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 970 flow [2024-06-14 12:08:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:38,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:08:38,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:08:38,364 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 705 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:08:38,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 970 flow [2024-06-14 12:08:38,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 915 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:08:38,381 INFO L231 Difference]: Finished difference. Result has 104 places, 93 transitions, 738 flow [2024-06-14 12:08:38,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=738, PETRI_PLACES=104, PETRI_TRANSITIONS=93} [2024-06-14 12:08:38,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-14 12:08:38,382 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 93 transitions, 738 flow [2024-06-14 12:08:38,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:38,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:38,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:38,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:08:38,382 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:38,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:38,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1567179793, now seen corresponding path program 6 times [2024-06-14 12:08:38,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:38,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055585764] [2024-06-14 12:08:38,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:38,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:38,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055585764] [2024-06-14 12:08:38,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055585764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:38,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:38,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:08:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102427886] [2024-06-14 12:08:38,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:38,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:08:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:38,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:08:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:08:39,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:39,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 93 transitions, 738 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:39,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:39,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:39,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:39,199 INFO L124 PetriNetUnfolderBase]: 262/470 cut-off events. [2024-06-14 12:08:39,199 INFO L125 PetriNetUnfolderBase]: For 9131/9131 co-relation queries the response was YES. [2024-06-14 12:08:39,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 470 events. 262/470 cut-off events. For 9131/9131 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1840 event pairs, 41 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 2400. Up to 396 conditions per place. [2024-06-14 12:08:39,205 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 28 changer transitions 0/110 dead transitions. [2024-06-14 12:08:39,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 1020 flow [2024-06-14 12:08:39,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:08:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:08:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 12:08:39,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 12:08:39,206 INFO L175 Difference]: Start difference. First operand has 104 places, 93 transitions, 738 flow. Second operand 8 states and 100 transitions. [2024-06-14 12:08:39,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 1020 flow [2024-06-14 12:08:39,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 958 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:39,220 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 773 flow [2024-06-14 12:08:39,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=773, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-06-14 12:08:39,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-14 12:08:39,221 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 773 flow [2024-06-14 12:08:39,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:39,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:39,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:08:39,222 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:39,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash 273519209, now seen corresponding path program 1 times [2024-06-14 12:08:39,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648252421] [2024-06-14 12:08:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:39,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:39,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648252421] [2024-06-14 12:08:39,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648252421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:39,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:39,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:39,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510678174] [2024-06-14 12:08:39,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:39,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:39,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:39,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:39,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:39,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:39,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:39,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:39,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:39,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:40,220 INFO L124 PetriNetUnfolderBase]: 258/464 cut-off events. [2024-06-14 12:08:40,221 INFO L125 PetriNetUnfolderBase]: For 9311/9311 co-relation queries the response was YES. [2024-06-14 12:08:40,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 464 events. 258/464 cut-off events. For 9311/9311 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1803 event pairs, 34 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2352. Up to 427 conditions per place. [2024-06-14 12:08:40,226 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-14 12:08:40,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 1029 flow [2024-06-14 12:08:40,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:40,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-14 12:08:40,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:08:40,227 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 773 flow. Second operand 9 states and 99 transitions. [2024-06-14 12:08:40,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 1029 flow [2024-06-14 12:08:40,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 110 transitions, 962 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:40,246 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 757 flow [2024-06-14 12:08:40,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=757, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2024-06-14 12:08:40,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 12:08:40,247 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 757 flow [2024-06-14 12:08:40,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:40,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:40,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:40,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:08:40,247 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:40,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:40,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1347712171, now seen corresponding path program 7 times [2024-06-14 12:08:40,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:40,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200214939] [2024-06-14 12:08:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:40,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:40,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200214939] [2024-06-14 12:08:40,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200214939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:40,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:40,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546576501] [2024-06-14 12:08:40,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:40,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:40,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:40,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 757 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:40,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:40,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:40,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:41,107 INFO L124 PetriNetUnfolderBase]: 261/469 cut-off events. [2024-06-14 12:08:41,107 INFO L125 PetriNetUnfolderBase]: For 9428/9428 co-relation queries the response was YES. [2024-06-14 12:08:41,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2431 conditions, 469 events. 261/469 cut-off events. For 9428/9428 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1839 event pairs, 38 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 2378. Up to 445 conditions per place. [2024-06-14 12:08:41,110 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-14 12:08:41,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 111 transitions, 1036 flow [2024-06-14 12:08:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:08:41,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:08:41,111 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 757 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:08:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 111 transitions, 1036 flow [2024-06-14 12:08:41,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 111 transitions, 1001 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:41,130 INFO L231 Difference]: Finished difference. Result has 114 places, 102 transitions, 810 flow [2024-06-14 12:08:41,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=810, PETRI_PLACES=114, PETRI_TRANSITIONS=102} [2024-06-14 12:08:41,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-14 12:08:41,130 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 102 transitions, 810 flow [2024-06-14 12:08:41,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:41,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:41,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:41,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:08:41,131 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:41,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1119811021, now seen corresponding path program 8 times [2024-06-14 12:08:41,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:41,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104280220] [2024-06-14 12:08:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:41,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104280220] [2024-06-14 12:08:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104280220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:41,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:41,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804201594] [2024-06-14 12:08:41,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:41,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:41,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:41,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 102 transitions, 810 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:41,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:41,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:41,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:42,125 INFO L124 PetriNetUnfolderBase]: 259/466 cut-off events. [2024-06-14 12:08:42,125 INFO L125 PetriNetUnfolderBase]: For 9558/9558 co-relation queries the response was YES. [2024-06-14 12:08:42,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 466 events. 259/466 cut-off events. For 9558/9558 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1830 event pairs, 40 based on Foata normal form. 1/467 useless extension candidates. Maximal degree in co-relation 2354. Up to 436 conditions per place. [2024-06-14 12:08:42,128 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 92 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2024-06-14 12:08:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 111 transitions, 1048 flow [2024-06-14 12:08:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:08:42,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:08:42,130 INFO L175 Difference]: Start difference. First operand has 114 places, 102 transitions, 810 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:08:42,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 111 transitions, 1048 flow [2024-06-14 12:08:42,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 111 transitions, 1001 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:42,150 INFO L231 Difference]: Finished difference. Result has 118 places, 102 transitions, 802 flow [2024-06-14 12:08:42,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=802, PETRI_PLACES=118, PETRI_TRANSITIONS=102} [2024-06-14 12:08:42,151 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 12:08:42,152 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 802 flow [2024-06-14 12:08:42,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:42,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:42,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:42,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:08:42,152 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:42,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:42,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1951212463, now seen corresponding path program 1 times [2024-06-14 12:08:42,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:42,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730419418] [2024-06-14 12:08:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:42,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:42,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:42,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730419418] [2024-06-14 12:08:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730419418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678117592] [2024-06-14 12:08:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:42,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:42,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:42,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:42,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:42,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 802 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:42,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:42,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:42,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:43,064 INFO L124 PetriNetUnfolderBase]: 263/474 cut-off events. [2024-06-14 12:08:43,065 INFO L125 PetriNetUnfolderBase]: For 10622/10622 co-relation queries the response was YES. [2024-06-14 12:08:43,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2437 conditions, 474 events. 263/474 cut-off events. For 10622/10622 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1884 event pairs, 22 based on Foata normal form. 2/476 useless extension candidates. Maximal degree in co-relation 2380. Up to 274 conditions per place. [2024-06-14 12:08:43,068 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 77 selfloop transitions, 43 changer transitions 0/122 dead transitions. [2024-06-14 12:08:43,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 1154 flow [2024-06-14 12:08:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:43,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:08:43,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:08:43,069 INFO L175 Difference]: Start difference. First operand has 118 places, 102 transitions, 802 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:08:43,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 122 transitions, 1154 flow [2024-06-14 12:08:43,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 122 transitions, 1031 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-14 12:08:43,092 INFO L231 Difference]: Finished difference. Result has 115 places, 103 transitions, 773 flow [2024-06-14 12:08:43,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=773, PETRI_PLACES=115, PETRI_TRANSITIONS=103} [2024-06-14 12:08:43,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-14 12:08:43,092 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 103 transitions, 773 flow [2024-06-14 12:08:43,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:43,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:43,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:08:43,093 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:43,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1425714433, now seen corresponding path program 2 times [2024-06-14 12:08:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:43,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760328382] [2024-06-14 12:08:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:43,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:43,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760328382] [2024-06-14 12:08:43,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760328382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:43,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:43,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:43,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122142342] [2024-06-14 12:08:43,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:43,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:43,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:43,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 103 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:43,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:43,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:43,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:43,989 INFO L124 PetriNetUnfolderBase]: 267/482 cut-off events. [2024-06-14 12:08:43,989 INFO L125 PetriNetUnfolderBase]: For 11155/11155 co-relation queries the response was YES. [2024-06-14 12:08:43,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 482 events. 267/482 cut-off events. For 11155/11155 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1930 event pairs, 42 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2399. Up to 363 conditions per place. [2024-06-14 12:08:43,992 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 42 changer transitions 0/120 dead transitions. [2024-06-14 12:08:43,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 120 transitions, 1053 flow [2024-06-14 12:08:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:08:43,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:08:43,993 INFO L175 Difference]: Start difference. First operand has 115 places, 103 transitions, 773 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:08:43,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 120 transitions, 1053 flow [2024-06-14 12:08:44,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 975 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:44,011 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 791 flow [2024-06-14 12:08:44,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=791, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-06-14 12:08:44,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 12:08:44,011 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 791 flow [2024-06-14 12:08:44,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:44,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:44,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:44,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:08:44,012 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:44,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:44,012 INFO L85 PathProgramCache]: Analyzing trace with hash -703827246, now seen corresponding path program 1 times [2024-06-14 12:08:44,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:44,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721741055] [2024-06-14 12:08:44,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:44,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:44,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:44,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721741055] [2024-06-14 12:08:44,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721741055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:44,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429926017] [2024-06-14 12:08:44,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:44,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:44,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:44,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 791 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:44,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:44,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:44,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:45,078 INFO L124 PetriNetUnfolderBase]: 273/492 cut-off events. [2024-06-14 12:08:45,078 INFO L125 PetriNetUnfolderBase]: For 11852/11852 co-relation queries the response was YES. [2024-06-14 12:08:45,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 492 events. 273/492 cut-off events. For 11852/11852 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1969 event pairs, 37 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2472. Up to 242 conditions per place. [2024-06-14 12:08:45,081 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 49 changer transitions 0/128 dead transitions. [2024-06-14 12:08:45,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 128 transitions, 1197 flow [2024-06-14 12:08:45,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:08:45,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:08:45,082 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 791 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:08:45,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 128 transitions, 1197 flow [2024-06-14 12:08:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 128 transitions, 1115 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:45,102 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 856 flow [2024-06-14 12:08:45,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=856, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2024-06-14 12:08:45,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-14 12:08:45,102 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 856 flow [2024-06-14 12:08:45,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:45,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:45,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:45,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:08:45,103 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:45,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:45,103 INFO L85 PathProgramCache]: Analyzing trace with hash -703831121, now seen corresponding path program 3 times [2024-06-14 12:08:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264775148] [2024-06-14 12:08:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264775148] [2024-06-14 12:08:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264775148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:45,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:45,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896322967] [2024-06-14 12:08:45,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:45,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:45,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:45,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:45,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:45,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 856 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:45,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:45,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:45,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:46,050 INFO L124 PetriNetUnfolderBase]: 277/500 cut-off events. [2024-06-14 12:08:46,050 INFO L125 PetriNetUnfolderBase]: For 12635/12635 co-relation queries the response was YES. [2024-06-14 12:08:46,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 500 events. 277/500 cut-off events. For 12635/12635 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2040 event pairs, 41 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 2565. Up to 367 conditions per place. [2024-06-14 12:08:46,052 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 81 selfloop transitions, 43 changer transitions 0/126 dead transitions. [2024-06-14 12:08:46,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 1149 flow [2024-06-14 12:08:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 12:08:46,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-14 12:08:46,054 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 856 flow. Second operand 9 states and 111 transitions. [2024-06-14 12:08:46,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 1149 flow [2024-06-14 12:08:46,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 1089 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:46,077 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 893 flow [2024-06-14 12:08:46,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=893, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-14 12:08:46,078 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-14 12:08:46,078 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 893 flow [2024-06-14 12:08:46,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:46,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:46,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:46,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:08:46,096 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:46,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash -616991286, now seen corresponding path program 2 times [2024-06-14 12:08:46,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:46,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918343717] [2024-06-14 12:08:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:46,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:46,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:46,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918343717] [2024-06-14 12:08:46,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918343717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:46,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:46,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:46,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548320833] [2024-06-14 12:08:46,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:46,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:46,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:46,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:46,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 893 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:46,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:46,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:46,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:47,138 INFO L124 PetriNetUnfolderBase]: 283/510 cut-off events. [2024-06-14 12:08:47,138 INFO L125 PetriNetUnfolderBase]: For 13464/13464 co-relation queries the response was YES. [2024-06-14 12:08:47,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 510 events. 283/510 cut-off events. For 13464/13464 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2077 event pairs, 35 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2694. Up to 340 conditions per place. [2024-06-14 12:08:47,141 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 41 changer transitions 0/128 dead transitions. [2024-06-14 12:08:47,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1205 flow [2024-06-14 12:08:47,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:08:47,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-14 12:08:47,142 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 893 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:08:47,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1205 flow [2024-06-14 12:08:47,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 128 transitions, 1119 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:47,165 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 920 flow [2024-06-14 12:08:47,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=920, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-14 12:08:47,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-14 12:08:47,165 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 920 flow [2024-06-14 12:08:47,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:47,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:47,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:08:47,166 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:47,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash -616991441, now seen corresponding path program 4 times [2024-06-14 12:08:47,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:47,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666883671] [2024-06-14 12:08:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666883671] [2024-06-14 12:08:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666883671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:47,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598326631] [2024-06-14 12:08:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:47,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:47,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:47,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:47,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:47,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:47,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:48,079 INFO L124 PetriNetUnfolderBase]: 287/518 cut-off events. [2024-06-14 12:08:48,080 INFO L125 PetriNetUnfolderBase]: For 14276/14276 co-relation queries the response was YES. [2024-06-14 12:08:48,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 518 events. 287/518 cut-off events. For 14276/14276 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2139 event pairs, 43 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 2758. Up to 438 conditions per place. [2024-06-14 12:08:48,083 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 28 changer transitions 0/125 dead transitions. [2024-06-14 12:08:48,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 125 transitions, 1203 flow [2024-06-14 12:08:48,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-14 12:08:48,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-14 12:08:48,084 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 920 flow. Second operand 9 states and 106 transitions. [2024-06-14 12:08:48,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 125 transitions, 1203 flow [2024-06-14 12:08:48,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 1110 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:48,109 INFO L231 Difference]: Finished difference. Result has 128 places, 112 transitions, 896 flow [2024-06-14 12:08:48,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=896, PETRI_PLACES=128, PETRI_TRANSITIONS=112} [2024-06-14 12:08:48,110 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-14 12:08:48,110 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 112 transitions, 896 flow [2024-06-14 12:08:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:48,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:48,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:08:48,111 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:48,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1102830167, now seen corresponding path program 5 times [2024-06-14 12:08:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897248571] [2024-06-14 12:08:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:48,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:48,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:48,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:48,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897248571] [2024-06-14 12:08:48,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897248571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:48,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:48,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:48,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610030004] [2024-06-14 12:08:48,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:48,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:48,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:48,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:48,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:48,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 112 transitions, 896 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:48,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:48,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:48,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:49,093 INFO L124 PetriNetUnfolderBase]: 291/526 cut-off events. [2024-06-14 12:08:49,094 INFO L125 PetriNetUnfolderBase]: For 14900/14900 co-relation queries the response was YES. [2024-06-14 12:08:49,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 526 events. 291/526 cut-off events. For 14900/14900 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2191 event pairs, 45 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 2752. Up to 440 conditions per place. [2024-06-14 12:08:49,097 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 93 selfloop transitions, 31 changer transitions 0/126 dead transitions. [2024-06-14 12:08:49,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 1183 flow [2024-06-14 12:08:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:49,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:49,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 12:08:49,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-14 12:08:49,098 INFO L175 Difference]: Start difference. First operand has 128 places, 112 transitions, 896 flow. Second operand 9 states and 107 transitions. [2024-06-14 12:08:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 1183 flow [2024-06-14 12:08:49,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 1122 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:49,124 INFO L231 Difference]: Finished difference. Result has 130 places, 113 transitions, 912 flow [2024-06-14 12:08:49,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=130, PETRI_TRANSITIONS=113} [2024-06-14 12:08:49,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 12:08:49,125 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 113 transitions, 912 flow [2024-06-14 12:08:49,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:49,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:49,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:49,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:08:49,126 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:49,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1102830012, now seen corresponding path program 3 times [2024-06-14 12:08:49,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:49,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797848174] [2024-06-14 12:08:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:49,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797848174] [2024-06-14 12:08:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797848174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:50,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053328479] [2024-06-14 12:08:50,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:50,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:50,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 113 transitions, 912 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:50,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:50,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:50,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:50,326 INFO L124 PetriNetUnfolderBase]: 297/536 cut-off events. [2024-06-14 12:08:50,326 INFO L125 PetriNetUnfolderBase]: For 15767/15767 co-relation queries the response was YES. [2024-06-14 12:08:50,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 536 events. 297/536 cut-off events. For 15767/15767 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2240 event pairs, 41 based on Foata normal form. 2/538 useless extension candidates. Maximal degree in co-relation 2828. Up to 376 conditions per place. [2024-06-14 12:08:50,329 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 41 changer transitions 0/131 dead transitions. [2024-06-14 12:08:50,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 131 transitions, 1232 flow [2024-06-14 12:08:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:08:50,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 12:08:50,330 INFO L175 Difference]: Start difference. First operand has 130 places, 113 transitions, 912 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:08:50,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 131 transitions, 1232 flow [2024-06-14 12:08:50,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 131 transitions, 1166 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:50,361 INFO L231 Difference]: Finished difference. Result has 132 places, 115 transitions, 963 flow [2024-06-14 12:08:50,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=963, PETRI_PLACES=132, PETRI_TRANSITIONS=115} [2024-06-14 12:08:50,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2024-06-14 12:08:50,362 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 115 transitions, 963 flow [2024-06-14 12:08:50,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:50,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:50,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:50,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:08:50,363 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:50,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1102833887, now seen corresponding path program 6 times [2024-06-14 12:08:50,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:50,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109300436] [2024-06-14 12:08:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:50,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109300436] [2024-06-14 12:08:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109300436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:50,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111282495] [2024-06-14 12:08:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:51,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:51,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 963 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:51,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:51,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:51,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:51,334 INFO L124 PetriNetUnfolderBase]: 301/544 cut-off events. [2024-06-14 12:08:51,334 INFO L125 PetriNetUnfolderBase]: For 16636/16636 co-relation queries the response was YES. [2024-06-14 12:08:51,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2982 conditions, 544 events. 301/544 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2295 event pairs, 45 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 2919. Up to 438 conditions per place. [2024-06-14 12:08:51,339 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 95 selfloop transitions, 33 changer transitions 0/130 dead transitions. [2024-06-14 12:08:51,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1262 flow [2024-06-14 12:08:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:51,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 12:08:51,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:08:51,340 INFO L175 Difference]: Start difference. First operand has 132 places, 115 transitions, 963 flow. Second operand 9 states and 108 transitions. [2024-06-14 12:08:51,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1262 flow [2024-06-14 12:08:51,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1165 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:51,398 INFO L231 Difference]: Finished difference. Result has 134 places, 116 transitions, 949 flow [2024-06-14 12:08:51,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=949, PETRI_PLACES=134, PETRI_TRANSITIONS=116} [2024-06-14 12:08:51,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-14 12:08:51,399 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 116 transitions, 949 flow [2024-06-14 12:08:51,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:51,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:51,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:51,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:08:51,400 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:51,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:51,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1823774913, now seen corresponding path program 7 times [2024-06-14 12:08:51,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345168884] [2024-06-14 12:08:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:51,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:52,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:52,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345168884] [2024-06-14 12:08:52,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345168884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:52,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:52,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:52,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782643269] [2024-06-14 12:08:52,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:52,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:52,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:52,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:52,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:52,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:52,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 116 transitions, 949 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:52,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:52,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:52,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:52,537 INFO L124 PetriNetUnfolderBase]: 305/552 cut-off events. [2024-06-14 12:08:52,538 INFO L125 PetriNetUnfolderBase]: For 17447/17447 co-relation queries the response was YES. [2024-06-14 12:08:52,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 552 events. 305/552 cut-off events. For 17447/17447 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2350 event pairs, 27 based on Foata normal form. 2/554 useless extension candidates. Maximal degree in co-relation 2933. Up to 405 conditions per place. [2024-06-14 12:08:52,541 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 93 selfloop transitions, 43 changer transitions 0/138 dead transitions. [2024-06-14 12:08:52,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 138 transitions, 1366 flow [2024-06-14 12:08:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:52,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:08:52,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4157706093189964 [2024-06-14 12:08:52,542 INFO L175 Difference]: Start difference. First operand has 134 places, 116 transitions, 949 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:08:52,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 138 transitions, 1366 flow [2024-06-14 12:08:52,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 138 transitions, 1294 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:52,588 INFO L231 Difference]: Finished difference. Result has 136 places, 117 transitions, 980 flow [2024-06-14 12:08:52,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=980, PETRI_PLACES=136, PETRI_TRANSITIONS=117} [2024-06-14 12:08:52,588 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2024-06-14 12:08:52,589 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 117 transitions, 980 flow [2024-06-14 12:08:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:52,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:52,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:08:52,591 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:52,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1283611363, now seen corresponding path program 8 times [2024-06-14 12:08:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251775918] [2024-06-14 12:08:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:52,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:53,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251775918] [2024-06-14 12:08:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251775918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:53,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361524853] [2024-06-14 12:08:53,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:53,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:53,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:53,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:53,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:53,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:53,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 117 transitions, 980 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:53,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:53,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:53,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:53,565 INFO L124 PetriNetUnfolderBase]: 309/560 cut-off events. [2024-06-14 12:08:53,565 INFO L125 PetriNetUnfolderBase]: For 18379/18379 co-relation queries the response was YES. [2024-06-14 12:08:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078 conditions, 560 events. 309/560 cut-off events. For 18379/18379 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2408 event pairs, 41 based on Foata normal form. 2/562 useless extension candidates. Maximal degree in co-relation 3013. Up to 456 conditions per place. [2024-06-14 12:08:53,568 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 41 changer transitions 0/137 dead transitions. [2024-06-14 12:08:53,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 1311 flow [2024-06-14 12:08:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:08:53,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-14 12:08:53,570 INFO L175 Difference]: Start difference. First operand has 136 places, 117 transitions, 980 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:08:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 1311 flow [2024-06-14 12:08:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 1205 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:53,612 INFO L231 Difference]: Finished difference. Result has 138 places, 118 transitions, 977 flow [2024-06-14 12:08:53,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=138, PETRI_TRANSITIONS=118} [2024-06-14 12:08:53,612 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-14 12:08:53,613 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 118 transitions, 977 flow [2024-06-14 12:08:53,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:53,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:53,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:53,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:08:53,613 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:53,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1283611208, now seen corresponding path program 4 times [2024-06-14 12:08:53,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297656736] [2024-06-14 12:08:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:53,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:54,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297656736] [2024-06-14 12:08:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297656736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:54,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:54,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:54,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976410151] [2024-06-14 12:08:54,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:54,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:54,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:54,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:54,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:54,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 118 transitions, 977 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:54,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:54,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:54,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:54,770 INFO L124 PetriNetUnfolderBase]: 325/586 cut-off events. [2024-06-14 12:08:54,770 INFO L125 PetriNetUnfolderBase]: For 21087/21087 co-relation queries the response was YES. [2024-06-14 12:08:54,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 586 events. 325/586 cut-off events. For 21087/21087 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2523 event pairs, 41 based on Foata normal form. 2/588 useless extension candidates. Maximal degree in co-relation 3232. Up to 391 conditions per place. [2024-06-14 12:08:54,773 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 95 selfloop transitions, 48 changer transitions 0/145 dead transitions. [2024-06-14 12:08:54,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 145 transitions, 1463 flow [2024-06-14 12:08:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:08:54,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43727598566308246 [2024-06-14 12:08:54,793 INFO L175 Difference]: Start difference. First operand has 138 places, 118 transitions, 977 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:08:54,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 145 transitions, 1463 flow [2024-06-14 12:08:54,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 145 transitions, 1373 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:54,839 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1052 flow [2024-06-14 12:08:54,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-14 12:08:54,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-14 12:08:54,840 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1052 flow [2024-06-14 12:08:54,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:54,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:54,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:54,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:08:54,841 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:08:54,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1278099098, now seen corresponding path program 5 times [2024-06-14 12:08:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:54,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469566941] [2024-06-14 12:08:54,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:54,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:55,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469566941] [2024-06-14 12:08:55,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469566941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:55,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:55,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:08:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215498289] [2024-06-14 12:08:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:55,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:08:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:08:55,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:08:55,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:55,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1052 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:55,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:55,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:55,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:56,051 INFO L124 PetriNetUnfolderBase]: 337/606 cut-off events. [2024-06-14 12:08:56,051 INFO L125 PetriNetUnfolderBase]: For 22272/22272 co-relation queries the response was YES. [2024-06-14 12:08:56,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3463 conditions, 606 events. 337/606 cut-off events. For 22272/22272 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2637 event pairs, 46 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 3396. Up to 463 conditions per place. [2024-06-14 12:08:56,054 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 36 changer transitions 0/144 dead transitions. [2024-06-14 12:08:56,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 144 transitions, 1428 flow [2024-06-14 12:08:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:08:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:08:56,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 12:08:56,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-14 12:08:56,079 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1052 flow. Second operand 10 states and 123 transitions. [2024-06-14 12:08:56,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 144 transitions, 1428 flow [2024-06-14 12:08:56,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 1352 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 12:08:56,128 INFO L231 Difference]: Finished difference. Result has 145 places, 126 transitions, 1109 flow [2024-06-14 12:08:56,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=145, PETRI_TRANSITIONS=126} [2024-06-14 12:08:56,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-14 12:08:56,129 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 126 transitions, 1109 flow [2024-06-14 12:08:56,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:56,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:56,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:56,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:08:56,130 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)] === [2024-06-14 12:08:56,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1278104678, now seen corresponding path program 6 times [2024-06-14 12:08:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:56,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907041361] [2024-06-14 12:08:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:56,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:56,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:56,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907041361] [2024-06-14 12:08:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907041361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:56,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:56,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:08:56,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256013739] [2024-06-14 12:08:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:56,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:08:56,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:56,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:08:56,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:08:56,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:56,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 126 transitions, 1109 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:56,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:56,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:56,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:57,384 INFO L124 PetriNetUnfolderBase]: 353/632 cut-off events. [2024-06-14 12:08:57,384 INFO L125 PetriNetUnfolderBase]: For 25347/25347 co-relation queries the response was YES. [2024-06-14 12:08:57,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3791 conditions, 632 events. 353/632 cut-off events. For 25347/25347 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2773 event pairs, 40 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3722. Up to 447 conditions per place. [2024-06-14 12:08:57,414 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 103 selfloop transitions, 45 changer transitions 0/150 dead transitions. [2024-06-14 12:08:57,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 1615 flow [2024-06-14 12:08:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:08:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:08:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:08:57,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 12:08:57,415 INFO L175 Difference]: Start difference. First operand has 145 places, 126 transitions, 1109 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:08:57,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 1615 flow [2024-06-14 12:08:57,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1524 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:57,513 INFO L231 Difference]: Finished difference. Result has 148 places, 130 transitions, 1193 flow [2024-06-14 12:08:57,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1193, PETRI_PLACES=148, PETRI_TRANSITIONS=130} [2024-06-14 12:08:57,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-14 12:08:57,514 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 130 transitions, 1193 flow [2024-06-14 12:08:57,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:57,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:57,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:57,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:08:57,515 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)] === [2024-06-14 12:08:57,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:57,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1337926732, now seen corresponding path program 7 times [2024-06-14 12:08:57,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:57,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995373056] [2024-06-14 12:08:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:57,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:58,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:58,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:58,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995373056] [2024-06-14 12:08:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995373056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:58,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:58,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:08:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706749608] [2024-06-14 12:08:58,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:08:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:58,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:08:58,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:08:58,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:58,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 130 transitions, 1193 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:58,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:58,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:58,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:58,613 INFO L124 PetriNetUnfolderBase]: 359/642 cut-off events. [2024-06-14 12:08:58,613 INFO L125 PetriNetUnfolderBase]: For 26862/26862 co-relation queries the response was YES. [2024-06-14 12:08:58,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 642 events. 359/642 cut-off events. For 26862/26862 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2850 event pairs, 43 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 3834. Up to 499 conditions per place. [2024-06-14 12:08:58,617 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 108 selfloop transitions, 41 changer transitions 0/151 dead transitions. [2024-06-14 12:08:58,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 1577 flow [2024-06-14 12:08:58,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:08:58,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:08:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:08:58,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-14 12:08:58,641 INFO L175 Difference]: Start difference. First operand has 148 places, 130 transitions, 1193 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:08:58,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 1577 flow [2024-06-14 12:08:58,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 1503 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 12:08:58,690 INFO L231 Difference]: Finished difference. Result has 151 places, 132 transitions, 1252 flow [2024-06-14 12:08:58,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1252, PETRI_PLACES=151, PETRI_TRANSITIONS=132} [2024-06-14 12:08:58,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-14 12:08:58,690 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 132 transitions, 1252 flow [2024-06-14 12:08:58,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:08:58,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:58,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:58,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:08:58,691 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)] === [2024-06-14 12:08:58,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1818264663, now seen corresponding path program 9 times [2024-06-14 12:08:58,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:58,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624770572] [2024-06-14 12:08:58,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:58,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:08:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:08:59,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:08:59,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624770572] [2024-06-14 12:08:59,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624770572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:08:59,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:08:59,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:08:59,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375654290] [2024-06-14 12:08:59,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:08:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:08:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:08:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:08:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:08:59,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:08:59,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 132 transitions, 1252 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:59,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:08:59,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:08:59,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:08:59,836 INFO L124 PetriNetUnfolderBase]: 363/650 cut-off events. [2024-06-14 12:08:59,836 INFO L125 PetriNetUnfolderBase]: For 27771/27771 co-relation queries the response was YES. [2024-06-14 12:08:59,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4027 conditions, 650 events. 363/650 cut-off events. For 27771/27771 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2866 event pairs, 57 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3955. Up to 570 conditions per place. [2024-06-14 12:08:59,841 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 117 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-14 12:08:59,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 147 transitions, 1589 flow [2024-06-14 12:08:59,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:08:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:08:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:08:59,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:08:59,849 INFO L175 Difference]: Start difference. First operand has 151 places, 132 transitions, 1252 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:08:59,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 147 transitions, 1589 flow [2024-06-14 12:08:59,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 147 transitions, 1477 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 12:08:59,906 INFO L231 Difference]: Finished difference. Result has 154 places, 133 transitions, 1217 flow [2024-06-14 12:08:59,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1217, PETRI_PLACES=154, PETRI_TRANSITIONS=133} [2024-06-14 12:08:59,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-14 12:08:59,907 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 133 transitions, 1217 flow [2024-06-14 12:08:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:08:59,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:08:59,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:08:59,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:08:59,907 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)] === [2024-06-14 12:08:59,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:08:59,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1818049182, now seen corresponding path program 1 times [2024-06-14 12:08:59,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:08:59,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685397143] [2024-06-14 12:08:59,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:08:59,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:08:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685397143] [2024-06-14 12:09:00,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685397143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:00,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370926968] [2024-06-14 12:09:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:00,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:00,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 133 transitions, 1217 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:00,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:00,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:00,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:01,145 INFO L124 PetriNetUnfolderBase]: 387/702 cut-off events. [2024-06-14 12:09:01,145 INFO L125 PetriNetUnfolderBase]: For 42640/42640 co-relation queries the response was YES. [2024-06-14 12:09:01,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 702 events. 387/702 cut-off events. For 42640/42640 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3217 event pairs, 51 based on Foata normal form. 14/716 useless extension candidates. Maximal degree in co-relation 4070. Up to 501 conditions per place. [2024-06-14 12:09:01,171 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 34 changer transitions 10/156 dead transitions. [2024-06-14 12:09:01,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 156 transitions, 1609 flow [2024-06-14 12:09:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 12:09:01,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-14 12:09:01,181 INFO L175 Difference]: Start difference. First operand has 154 places, 133 transitions, 1217 flow. Second operand 10 states and 125 transitions. [2024-06-14 12:09:01,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 156 transitions, 1609 flow [2024-06-14 12:09:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 156 transitions, 1543 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:01,232 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1213 flow [2024-06-14 12:09:01,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1213, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-06-14 12:09:01,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-14 12:09:01,233 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1213 flow [2024-06-14 12:09:01,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:09:01,233 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)] === [2024-06-14 12:09:01,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1337932467, now seen corresponding path program 10 times [2024-06-14 12:09:01,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:01,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856593878] [2024-06-14 12:09:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:01,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856593878] [2024-06-14 12:09:01,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856593878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:01,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:01,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:01,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383429711] [2024-06-14 12:09:01,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:01,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:01,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:01,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:01,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:02,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1213 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:09:02,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:02,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:02,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:02,221 INFO L124 PetriNetUnfolderBase]: 373/680 cut-off events. [2024-06-14 12:09:02,221 INFO L125 PetriNetUnfolderBase]: For 30090/30090 co-relation queries the response was YES. [2024-06-14 12:09:02,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 680 events. 373/680 cut-off events. For 30090/30090 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3085 event pairs, 61 based on Foata normal form. 2/682 useless extension candidates. Maximal degree in co-relation 4022. Up to 600 conditions per place. [2024-06-14 12:09:02,225 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 31 changer transitions 0/148 dead transitions. [2024-06-14 12:09:02,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 148 transitions, 1560 flow [2024-06-14 12:09:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 12:09:02,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-14 12:09:02,233 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1213 flow. Second operand 9 states and 109 transitions. [2024-06-14 12:09:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 148 transitions, 1560 flow [2024-06-14 12:09:02,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 148 transitions, 1468 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:02,294 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 1206 flow [2024-06-14 12:09:02,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1121, 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=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1206, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2024-06-14 12:09:02,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-14 12:09:02,294 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 1206 flow [2024-06-14 12:09:02,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:09:02,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:02,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:02,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:09:02,295 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)] === [2024-06-14 12:09:02,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1818057118, now seen corresponding path program 8 times [2024-06-14 12:09:02,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:02,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552716344] [2024-06-14 12:09:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:02,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:03,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:03,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:03,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552716344] [2024-06-14 12:09:03,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552716344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:03,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:03,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:03,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071957224] [2024-06-14 12:09:03,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:03,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:03,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:03,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:03,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 1206 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:03,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:03,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:03,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:03,594 INFO L124 PetriNetUnfolderBase]: 369/674 cut-off events. [2024-06-14 12:09:03,594 INFO L125 PetriNetUnfolderBase]: For 28699/28699 co-relation queries the response was YES. [2024-06-14 12:09:03,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3931 conditions, 674 events. 369/674 cut-off events. For 28699/28699 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3052 event pairs, 50 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 3857. Up to 531 conditions per place. [2024-06-14 12:09:03,597 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 36 changer transitions 0/152 dead transitions. [2024-06-14 12:09:03,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 152 transitions, 1550 flow [2024-06-14 12:09:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:09:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:09:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:09:03,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-14 12:09:03,598 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 1206 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:09:03,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 152 transitions, 1550 flow [2024-06-14 12:09:03,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 152 transitions, 1456 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:03,659 INFO L231 Difference]: Finished difference. Result has 160 places, 132 transitions, 1189 flow [2024-06-14 12:09:03,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1189, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2024-06-14 12:09:03,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-14 12:09:03,659 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 1189 flow [2024-06-14 12:09:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:03,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:03,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:03,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:09:03,660 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)] === [2024-06-14 12:09:03,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2093550048, now seen corresponding path program 9 times [2024-06-14 12:09:03,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:03,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918808776] [2024-06-14 12:09:03,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:03,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:04,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:04,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:04,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918808776] [2024-06-14 12:09:04,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918808776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:04,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:04,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:09:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290419225] [2024-06-14 12:09:04,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:04,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:09:04,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:09:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:09:04,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:04,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 1189 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:09:04,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:04,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:04,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:04,684 INFO L124 PetriNetUnfolderBase]: 375/684 cut-off events. [2024-06-14 12:09:04,684 INFO L125 PetriNetUnfolderBase]: For 29699/29699 co-relation queries the response was YES. [2024-06-14 12:09:04,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 684 events. 375/684 cut-off events. For 29699/29699 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3115 event pairs, 42 based on Foata normal form. 2/686 useless extension candidates. Maximal degree in co-relation 3934. Up to 510 conditions per place. [2024-06-14 12:09:04,688 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 105 selfloop transitions, 48 changer transitions 0/155 dead transitions. [2024-06-14 12:09:04,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 155 transitions, 1589 flow [2024-06-14 12:09:04,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:04,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:09:04,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-14 12:09:04,689 INFO L175 Difference]: Start difference. First operand has 160 places, 132 transitions, 1189 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:09:04,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 155 transitions, 1589 flow [2024-06-14 12:09:04,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 155 transitions, 1500 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:09:04,752 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 1251 flow [2024-06-14 12:09:04,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1251, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2024-06-14 12:09:04,753 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-14 12:09:04,753 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 1251 flow [2024-06-14 12:09:04,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 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) [2024-06-14 12:09:04,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:04,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:09:04,754 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)] === [2024-06-14 12:09:04,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash -412268010, now seen corresponding path program 2 times [2024-06-14 12:09:04,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646025281] [2024-06-14 12:09:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:05,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:05,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646025281] [2024-06-14 12:09:05,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646025281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:05,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:05,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:05,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446987929] [2024-06-14 12:09:05,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:05,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:05,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:05,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:05,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:05,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 1251 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:05,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:05,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:05,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:06,145 INFO L124 PetriNetUnfolderBase]: 379/692 cut-off events. [2024-06-14 12:09:06,146 INFO L125 PetriNetUnfolderBase]: For 31074/31074 co-relation queries the response was YES. [2024-06-14 12:09:06,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4102 conditions, 692 events. 379/692 cut-off events. For 31074/31074 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3180 event pairs, 56 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 4026. Up to 650 conditions per place. [2024-06-14 12:09:06,151 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 128 selfloop transitions, 17 changer transitions 0/147 dead transitions. [2024-06-14 12:09:06,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 147 transitions, 1583 flow [2024-06-14 12:09:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:06,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-14 12:09:06,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-14 12:09:06,153 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 1251 flow. Second operand 9 states and 101 transitions. [2024-06-14 12:09:06,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 147 transitions, 1583 flow [2024-06-14 12:09:06,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 147 transitions, 1456 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:06,224 INFO L231 Difference]: Finished difference. Result has 160 places, 135 transitions, 1180 flow [2024-06-14 12:09:06,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1180, PETRI_PLACES=160, PETRI_TRANSITIONS=135} [2024-06-14 12:09:06,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-14 12:09:06,225 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 135 transitions, 1180 flow [2024-06-14 12:09:06,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:06,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:06,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:06,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:09:06,225 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)] === [2024-06-14 12:09:06,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash -637775292, now seen corresponding path program 3 times [2024-06-14 12:09:06,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:06,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946330275] [2024-06-14 12:09:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:06,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:07,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946330275] [2024-06-14 12:09:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946330275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:07,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866254143] [2024-06-14 12:09:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:07,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:07,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 135 transitions, 1180 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:07,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:07,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:07,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:07,473 INFO L124 PetriNetUnfolderBase]: 386/705 cut-off events. [2024-06-14 12:09:07,474 INFO L125 PetriNetUnfolderBase]: For 31963/31963 co-relation queries the response was YES. [2024-06-14 12:09:07,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 705 events. 386/705 cut-off events. For 31963/31963 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3251 event pairs, 53 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 3984. Up to 666 conditions per place. [2024-06-14 12:09:07,477 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 134 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2024-06-14 12:09:07,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 152 transitions, 1544 flow [2024-06-14 12:09:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:07,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 12:09:07,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-14 12:09:07,478 INFO L175 Difference]: Start difference. First operand has 160 places, 135 transitions, 1180 flow. Second operand 9 states and 100 transitions. [2024-06-14 12:09:07,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 152 transitions, 1544 flow [2024-06-14 12:09:07,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 152 transitions, 1495 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:07,548 INFO L231 Difference]: Finished difference. Result has 164 places, 140 transitions, 1225 flow [2024-06-14 12:09:07,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=164, PETRI_TRANSITIONS=140} [2024-06-14 12:09:07,549 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-14 12:09:07,549 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 140 transitions, 1225 flow [2024-06-14 12:09:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:07,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:09:07,550 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)] === [2024-06-14 12:09:07,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash -371751582, now seen corresponding path program 4 times [2024-06-14 12:09:07,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:07,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912933908] [2024-06-14 12:09:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:07,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:08,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:08,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912933908] [2024-06-14 12:09:08,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912933908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:08,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:08,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:08,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915719982] [2024-06-14 12:09:08,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:08,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:08,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:08,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:08,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:08,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 140 transitions, 1225 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:08,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:08,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:08,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:08,630 INFO L124 PetriNetUnfolderBase]: 390/713 cut-off events. [2024-06-14 12:09:08,630 INFO L125 PetriNetUnfolderBase]: For 33184/33184 co-relation queries the response was YES. [2024-06-14 12:09:08,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 713 events. 390/713 cut-off events. For 33184/33184 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3287 event pairs, 56 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4108. Up to 678 conditions per place. [2024-06-14 12:09:08,634 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 137 selfloop transitions, 13 changer transitions 0/152 dead transitions. [2024-06-14 12:09:08,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 152 transitions, 1569 flow [2024-06-14 12:09:08,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:08,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:08,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-14 12:09:08,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:09:08,635 INFO L175 Difference]: Start difference. First operand has 164 places, 140 transitions, 1225 flow. Second operand 9 states and 96 transitions. [2024-06-14 12:09:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 152 transitions, 1569 flow [2024-06-14 12:09:08,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 152 transitions, 1515 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:09:08,707 INFO L231 Difference]: Finished difference. Result has 167 places, 141 transitions, 1223 flow [2024-06-14 12:09:08,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1223, PETRI_PLACES=167, PETRI_TRANSITIONS=141} [2024-06-14 12:09:08,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-14 12:09:08,708 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 141 transitions, 1223 flow [2024-06-14 12:09:08,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:08,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:08,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:09:08,709 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)] === [2024-06-14 12:09:08,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash -978211260, now seen corresponding path program 10 times [2024-06-14 12:09:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321339869] [2024-06-14 12:09:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:09,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:09,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321339869] [2024-06-14 12:09:09,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321339869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:09,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:09,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:09,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742121909] [2024-06-14 12:09:09,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:09,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:09,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:09,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:09,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:09,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:09,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 141 transitions, 1223 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:09,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:09,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:09,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:10,081 INFO L124 PetriNetUnfolderBase]: 402/733 cut-off events. [2024-06-14 12:09:10,081 INFO L125 PetriNetUnfolderBase]: For 34645/34645 co-relation queries the response was YES. [2024-06-14 12:09:10,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 733 events. 402/733 cut-off events. For 34645/34645 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3434 event pairs, 54 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 4221. Up to 672 conditions per place. [2024-06-14 12:09:10,086 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 136 selfloop transitions, 24 changer transitions 0/162 dead transitions. [2024-06-14 12:09:10,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 162 transitions, 1657 flow [2024-06-14 12:09:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:09:10,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:09:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 12:09:10,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-14 12:09:10,087 INFO L175 Difference]: Start difference. First operand has 167 places, 141 transitions, 1223 flow. Second operand 12 states and 131 transitions. [2024-06-14 12:09:10,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 162 transitions, 1657 flow [2024-06-14 12:09:10,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 1615 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:10,163 INFO L231 Difference]: Finished difference. Result has 172 places, 145 transitions, 1306 flow [2024-06-14 12:09:10,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1306, PETRI_PLACES=172, PETRI_TRANSITIONS=145} [2024-06-14 12:09:10,163 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-14 12:09:10,163 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 145 transitions, 1306 flow [2024-06-14 12:09:10,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:10,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:10,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:09:10,164 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)] === [2024-06-14 12:09:10,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash -978413070, now seen corresponding path program 11 times [2024-06-14 12:09:10,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:10,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363224842] [2024-06-14 12:09:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:10,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:10,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:10,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:10,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363224842] [2024-06-14 12:09:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363224842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:10,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247461429] [2024-06-14 12:09:10,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:10,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:10,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:10,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:11,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:11,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 145 transitions, 1306 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:11,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:11,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:11,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:11,361 INFO L124 PetriNetUnfolderBase]: 408/743 cut-off events. [2024-06-14 12:09:11,362 INFO L125 PetriNetUnfolderBase]: For 36248/36248 co-relation queries the response was YES. [2024-06-14 12:09:11,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4429 conditions, 743 events. 408/743 cut-off events. For 36248/36248 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3503 event pairs, 54 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4348. Up to 682 conditions per place. [2024-06-14 12:09:11,366 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 137 selfloop transitions, 23 changer transitions 0/162 dead transitions. [2024-06-14 12:09:11,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 162 transitions, 1722 flow [2024-06-14 12:09:11,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:09:11,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:09:11,367 INFO L175 Difference]: Start difference. First operand has 172 places, 145 transitions, 1306 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:09:11,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 162 transitions, 1722 flow [2024-06-14 12:09:11,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 162 transitions, 1634 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:11,436 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 1327 flow [2024-06-14 12:09:11,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1327, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2024-06-14 12:09:11,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-14 12:09:11,437 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 1327 flow [2024-06-14 12:09:11,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:11,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:11,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:11,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:09:11,437 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)] === [2024-06-14 12:09:11,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash 887008324, now seen corresponding path program 12 times [2024-06-14 12:09:11,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:11,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680901986] [2024-06-14 12:09:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:11,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:12,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680901986] [2024-06-14 12:09:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680901986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:12,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:12,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975837261] [2024-06-14 12:09:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:12,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:12,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:12,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 1327 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:12,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:12,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:12,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:12,733 INFO L124 PetriNetUnfolderBase]: 414/753 cut-off events. [2024-06-14 12:09:12,733 INFO L125 PetriNetUnfolderBase]: For 37507/37507 co-relation queries the response was YES. [2024-06-14 12:09:12,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4505 conditions, 753 events. 414/753 cut-off events. For 37507/37507 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3549 event pairs, 54 based on Foata normal form. 2/755 useless extension candidates. Maximal degree in co-relation 4423. Up to 660 conditions per place. [2024-06-14 12:09:12,736 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 34 changer transitions 0/164 dead transitions. [2024-06-14 12:09:12,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 164 transitions, 1751 flow [2024-06-14 12:09:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:09:12,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:09:12,738 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 1327 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:09:12,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 164 transitions, 1751 flow [2024-06-14 12:09:12,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 1666 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:12,811 INFO L231 Difference]: Finished difference. Result has 175 places, 149 transitions, 1377 flow [2024-06-14 12:09:12,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1377, PETRI_PLACES=175, PETRI_TRANSITIONS=149} [2024-06-14 12:09:12,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-14 12:09:12,811 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 149 transitions, 1377 flow [2024-06-14 12:09:12,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:12,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:12,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:09:12,812 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)] === [2024-06-14 12:09:12,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:12,813 INFO L85 PathProgramCache]: Analyzing trace with hash 887008169, now seen corresponding path program 11 times [2024-06-14 12:09:12,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:12,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166298934] [2024-06-14 12:09:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:13,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:13,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:13,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166298934] [2024-06-14 12:09:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166298934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:13,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834996711] [2024-06-14 12:09:13,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:13,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:13,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:13,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:13,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:13,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 149 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:13,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:13,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:13,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:13,858 INFO L124 PetriNetUnfolderBase]: 418/761 cut-off events. [2024-06-14 12:09:13,858 INFO L125 PetriNetUnfolderBase]: For 38826/38826 co-relation queries the response was YES. [2024-06-14 12:09:13,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4559 conditions, 761 events. 418/761 cut-off events. For 38826/38826 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3605 event pairs, 62 based on Foata normal form. 2/763 useless extension candidates. Maximal degree in co-relation 4476. Up to 725 conditions per place. [2024-06-14 12:09:13,862 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 141 selfloop transitions, 18 changer transitions 0/161 dead transitions. [2024-06-14 12:09:13,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 161 transitions, 1738 flow [2024-06-14 12:09:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 12:09:13,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-14 12:09:13,863 INFO L175 Difference]: Start difference. First operand has 175 places, 149 transitions, 1377 flow. Second operand 10 states and 107 transitions. [2024-06-14 12:09:13,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 161 transitions, 1738 flow [2024-06-14 12:09:13,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 161 transitions, 1627 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:13,944 INFO L231 Difference]: Finished difference. Result has 177 places, 150 transitions, 1327 flow [2024-06-14 12:09:13,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1327, PETRI_PLACES=177, PETRI_TRANSITIONS=150} [2024-06-14 12:09:13,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-14 12:09:13,945 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 150 transitions, 1327 flow [2024-06-14 12:09:13,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:13,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:13,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:13,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:09:13,946 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)] === [2024-06-14 12:09:13,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -637985038, now seen corresponding path program 13 times [2024-06-14 12:09:13,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:13,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539436009] [2024-06-14 12:09:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:14,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:14,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539436009] [2024-06-14 12:09:14,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539436009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:14,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:14,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:14,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848744979] [2024-06-14 12:09:14,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:14,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:14,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:14,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 150 transitions, 1327 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:14,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:14,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:14,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:15,069 INFO L124 PetriNetUnfolderBase]: 430/781 cut-off events. [2024-06-14 12:09:15,070 INFO L125 PetriNetUnfolderBase]: For 40075/40075 co-relation queries the response was YES. [2024-06-14 12:09:15,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4642 conditions, 781 events. 430/781 cut-off events. For 40075/40075 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3726 event pairs, 60 based on Foata normal form. 2/783 useless extension candidates. Maximal degree in co-relation 4558. Up to 732 conditions per place. [2024-06-14 12:09:15,074 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 147 selfloop transitions, 19 changer transitions 0/168 dead transitions. [2024-06-14 12:09:15,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 168 transitions, 1777 flow [2024-06-14 12:09:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:15,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-14 12:09:15,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-14 12:09:15,075 INFO L175 Difference]: Start difference. First operand has 177 places, 150 transitions, 1327 flow. Second operand 10 states and 111 transitions. [2024-06-14 12:09:15,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 168 transitions, 1777 flow [2024-06-14 12:09:15,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 168 transitions, 1727 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:15,175 INFO L231 Difference]: Finished difference. Result has 179 places, 154 transitions, 1404 flow [2024-06-14 12:09:15,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=179, PETRI_TRANSITIONS=154} [2024-06-14 12:09:15,175 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 12:09:15,176 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 154 transitions, 1404 flow [2024-06-14 12:09:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:15,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:15,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:09:15,176 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)] === [2024-06-14 12:09:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash -381274782, now seen corresponding path program 5 times [2024-06-14 12:09:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601466774] [2024-06-14 12:09:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:15,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:15,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601466774] [2024-06-14 12:09:15,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601466774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:15,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:15,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165943973] [2024-06-14 12:09:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:15,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:15,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:15,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:16,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:16,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 154 transitions, 1404 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:16,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:16,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:16,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:16,310 INFO L124 PetriNetUnfolderBase]: 427/776 cut-off events. [2024-06-14 12:09:16,311 INFO L125 PetriNetUnfolderBase]: For 37844/37844 co-relation queries the response was YES. [2024-06-14 12:09:16,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 776 events. 427/776 cut-off events. For 37844/37844 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3694 event pairs, 61 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 4421. Up to 738 conditions per place. [2024-06-14 12:09:16,315 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 147 selfloop transitions, 16 changer transitions 0/165 dead transitions. [2024-06-14 12:09:16,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 165 transitions, 1756 flow [2024-06-14 12:09:16,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:09:16,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:09:16,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 12:09:16,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-14 12:09:16,316 INFO L175 Difference]: Start difference. First operand has 179 places, 154 transitions, 1404 flow. Second operand 9 states and 98 transitions. [2024-06-14 12:09:16,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 165 transitions, 1756 flow [2024-06-14 12:09:16,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 165 transitions, 1671 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-14 12:09:16,402 INFO L231 Difference]: Finished difference. Result has 181 places, 154 transitions, 1356 flow [2024-06-14 12:09:16,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1319, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1356, PETRI_PLACES=181, PETRI_TRANSITIONS=154} [2024-06-14 12:09:16,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-14 12:09:16,404 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 154 transitions, 1356 flow [2024-06-14 12:09:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:16,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:16,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:16,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:09:16,404 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)] === [2024-06-14 12:09:16,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:16,405 INFO L85 PathProgramCache]: Analyzing trace with hash -913886744, now seen corresponding path program 14 times [2024-06-14 12:09:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:16,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766849898] [2024-06-14 12:09:16,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:16,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:17,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:17,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766849898] [2024-06-14 12:09:17,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766849898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:17,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:17,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:17,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486195973] [2024-06-14 12:09:17,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:17,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:17,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:17,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:17,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:17,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:17,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 154 transitions, 1356 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:17,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:17,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:17,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:17,555 INFO L124 PetriNetUnfolderBase]: 423/770 cut-off events. [2024-06-14 12:09:17,556 INFO L125 PetriNetUnfolderBase]: For 34952/34952 co-relation queries the response was YES. [2024-06-14 12:09:17,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4290 conditions, 770 events. 423/770 cut-off events. For 34952/34952 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3670 event pairs, 58 based on Foata normal form. 2/772 useless extension candidates. Maximal degree in co-relation 4204. Up to 722 conditions per place. [2024-06-14 12:09:17,560 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 146 selfloop transitions, 19 changer transitions 0/167 dead transitions. [2024-06-14 12:09:17,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 167 transitions, 1720 flow [2024-06-14 12:09:17,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:09:17,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:09:17,562 INFO L175 Difference]: Start difference. First operand has 181 places, 154 transitions, 1356 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:09:17,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 167 transitions, 1720 flow [2024-06-14 12:09:17,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 167 transitions, 1662 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:17,648 INFO L231 Difference]: Finished difference. Result has 183 places, 154 transitions, 1341 flow [2024-06-14 12:09:17,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1341, PETRI_PLACES=183, PETRI_TRANSITIONS=154} [2024-06-14 12:09:17,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:09:17,649 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 154 transitions, 1341 flow [2024-06-14 12:09:17,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:17,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:17,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:09:17,650 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)] === [2024-06-14 12:09:17,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash -637990773, now seen corresponding path program 12 times [2024-06-14 12:09:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:17,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174855740] [2024-06-14 12:09:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:17,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:18,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174855740] [2024-06-14 12:09:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174855740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:18,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:18,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:18,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480261307] [2024-06-14 12:09:18,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:18,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:18,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:18,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:18,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 154 transitions, 1341 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:18,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:18,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:18,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:18,596 INFO L124 PetriNetUnfolderBase]: 420/765 cut-off events. [2024-06-14 12:09:18,596 INFO L125 PetriNetUnfolderBase]: For 32017/32017 co-relation queries the response was YES. [2024-06-14 12:09:18,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4115 conditions, 765 events. 420/765 cut-off events. For 32017/32017 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3640 event pairs, 57 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 4029. Up to 735 conditions per place. [2024-06-14 12:09:18,601 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 15 changer transitions 0/165 dead transitions. [2024-06-14 12:09:18,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 165 transitions, 1691 flow [2024-06-14 12:09:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:18,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:09:18,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:09:18,602 INFO L175 Difference]: Start difference. First operand has 183 places, 154 transitions, 1341 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:09:18,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 165 transitions, 1691 flow [2024-06-14 12:09:18,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 165 transitions, 1524 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:18,688 INFO L231 Difference]: Finished difference. Result has 183 places, 154 transitions, 1208 flow [2024-06-14 12:09:18,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1208, PETRI_PLACES=183, PETRI_TRANSITIONS=154} [2024-06-14 12:09:18,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:09:18,689 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 154 transitions, 1208 flow [2024-06-14 12:09:18,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:18,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:18,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:18,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:09:18,689 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)] === [2024-06-14 12:09:18,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash -784479240, now seen corresponding path program 15 times [2024-06-14 12:09:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:18,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847600794] [2024-06-14 12:09:18,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:18,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:19,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:19,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847600794] [2024-06-14 12:09:19,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847600794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:19,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:19,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434266040] [2024-06-14 12:09:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:19,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:19,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:19,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 154 transitions, 1208 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:19,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:19,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:19,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:19,857 INFO L124 PetriNetUnfolderBase]: 426/775 cut-off events. [2024-06-14 12:09:19,857 INFO L125 PetriNetUnfolderBase]: For 32959/32959 co-relation queries the response was YES. [2024-06-14 12:09:19,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 775 events. 426/775 cut-off events. For 32959/32959 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3709 event pairs, 52 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 3922. Up to 673 conditions per place. [2024-06-14 12:09:19,861 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 135 selfloop transitions, 34 changer transitions 0/171 dead transitions. [2024-06-14 12:09:19,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 171 transitions, 1774 flow [2024-06-14 12:09:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-14 12:09:19,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:09:19,862 INFO L175 Difference]: Start difference. First operand has 183 places, 154 transitions, 1208 flow. Second operand 10 states and 115 transitions. [2024-06-14 12:09:19,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 171 transitions, 1774 flow [2024-06-14 12:09:19,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1686 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:19,937 INFO L231 Difference]: Finished difference. Result has 183 places, 156 transitions, 1255 flow [2024-06-14 12:09:19,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=183, PETRI_TRANSITIONS=156} [2024-06-14 12:09:19,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:09:19,937 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 156 transitions, 1255 flow [2024-06-14 12:09:19,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:19,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:19,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:19,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:09:19,938 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)] === [2024-06-14 12:09:19,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash -637783228, now seen corresponding path program 16 times [2024-06-14 12:09:19,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:19,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236659890] [2024-06-14 12:09:19,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:19,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236659890] [2024-06-14 12:09:20,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236659890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:20,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:20,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212502588] [2024-06-14 12:09:20,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:20,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:20,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:20,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:20,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:20,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 156 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:20,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:20,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:20,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:21,051 INFO L124 PetriNetUnfolderBase]: 422/769 cut-off events. [2024-06-14 12:09:21,051 INFO L125 PetriNetUnfolderBase]: For 29880/29880 co-relation queries the response was YES. [2024-06-14 12:09:21,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 769 events. 422/769 cut-off events. For 29880/29880 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3699 event pairs, 56 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 3749. Up to 720 conditions per place. [2024-06-14 12:09:21,055 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 148 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-14 12:09:21,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 169 transitions, 1623 flow [2024-06-14 12:09:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:09:21,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:21,058 INFO L175 Difference]: Start difference. First operand has 183 places, 156 transitions, 1255 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:09:21,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 169 transitions, 1623 flow [2024-06-14 12:09:21,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 169 transitions, 1434 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:21,137 INFO L231 Difference]: Finished difference. Result has 185 places, 156 transitions, 1109 flow [2024-06-14 12:09:21,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=185, PETRI_TRANSITIONS=156} [2024-06-14 12:09:21,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-14 12:09:21,137 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 156 transitions, 1109 flow [2024-06-14 12:09:21,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:21,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:21,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:21,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:09:21,138 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)] === [2024-06-14 12:09:21,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1721317622, now seen corresponding path program 1 times [2024-06-14 12:09:21,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:21,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416559089] [2024-06-14 12:09:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:21,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:21,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416559089] [2024-06-14 12:09:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416559089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:21,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006398051] [2024-06-14 12:09:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:21,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:21,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:21,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 156 transitions, 1109 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:21,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:21,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:21,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:22,311 INFO L124 PetriNetUnfolderBase]: 449/830 cut-off events. [2024-06-14 12:09:22,312 INFO L125 PetriNetUnfolderBase]: For 54571/54571 co-relation queries the response was YES. [2024-06-14 12:09:22,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 830 events. 449/830 cut-off events. For 54571/54571 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4031 event pairs, 61 based on Foata normal form. 8/838 useless extension candidates. Maximal degree in co-relation 4060. Up to 307 conditions per place. [2024-06-14 12:09:22,316 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 88 selfloop transitions, 79 changer transitions 15/184 dead transitions. [2024-06-14 12:09:22,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 184 transitions, 1689 flow [2024-06-14 12:09:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 12:09:22,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-14 12:09:22,322 INFO L175 Difference]: Start difference. First operand has 185 places, 156 transitions, 1109 flow. Second operand 10 states and 128 transitions. [2024-06-14 12:09:22,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 184 transitions, 1689 flow [2024-06-14 12:09:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 184 transitions, 1545 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:09:22,418 INFO L231 Difference]: Finished difference. Result has 183 places, 153 transitions, 1111 flow [2024-06-14 12:09:22,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1111, PETRI_PLACES=183, PETRI_TRANSITIONS=153} [2024-06-14 12:09:22,418 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-14 12:09:22,419 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 153 transitions, 1111 flow [2024-06-14 12:09:22,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:22,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:22,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:22,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:09:22,419 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)] === [2024-06-14 12:09:22,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1779525392, now seen corresponding path program 2 times [2024-06-14 12:09:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832970241] [2024-06-14 12:09:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:23,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:23,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832970241] [2024-06-14 12:09:23,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832970241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:23,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:23,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674790874] [2024-06-14 12:09:23,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:23,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:23,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:23,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:23,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 153 transitions, 1111 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:23,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:23,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:23,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:23,587 INFO L124 PetriNetUnfolderBase]: 466/869 cut-off events. [2024-06-14 12:09:23,587 INFO L125 PetriNetUnfolderBase]: For 77886/77886 co-relation queries the response was YES. [2024-06-14 12:09:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 869 events. 466/869 cut-off events. For 77886/77886 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4318 event pairs, 74 based on Foata normal form. 8/877 useless extension candidates. Maximal degree in co-relation 4867. Up to 477 conditions per place. [2024-06-14 12:09:23,592 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 72 changer transitions 10/182 dead transitions. [2024-06-14 12:09:23,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 182 transitions, 1707 flow [2024-06-14 12:09:23,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:23,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:09:23,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-14 12:09:23,593 INFO L175 Difference]: Start difference. First operand has 183 places, 153 transitions, 1111 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:09:23,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 182 transitions, 1707 flow [2024-06-14 12:09:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 182 transitions, 1580 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:23,724 INFO L231 Difference]: Finished difference. Result has 180 places, 151 transitions, 1125 flow [2024-06-14 12:09:23,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1125, PETRI_PLACES=180, PETRI_TRANSITIONS=151} [2024-06-14 12:09:23,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-14 12:09:23,728 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 151 transitions, 1125 flow [2024-06-14 12:09:23,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:23,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:23,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:23,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:09:23,729 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)] === [2024-06-14 12:09:23,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:23,729 INFO L85 PathProgramCache]: Analyzing trace with hash -308297994, now seen corresponding path program 3 times [2024-06-14 12:09:23,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:23,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855400944] [2024-06-14 12:09:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:23,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:24,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:24,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855400944] [2024-06-14 12:09:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855400944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:24,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:24,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:24,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961703874] [2024-06-14 12:09:24,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:24,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:24,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:24,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:24,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:24,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 151 transitions, 1125 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:24,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:24,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:24,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:24,873 INFO L124 PetriNetUnfolderBase]: 435/808 cut-off events. [2024-06-14 12:09:24,874 INFO L125 PetriNetUnfolderBase]: For 57111/57111 co-relation queries the response was YES. [2024-06-14 12:09:24,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4178 conditions, 808 events. 435/808 cut-off events. For 57111/57111 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3937 event pairs, 65 based on Foata normal form. 10/818 useless extension candidates. Maximal degree in co-relation 4094. Up to 444 conditions per place. [2024-06-14 12:09:24,877 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 77 changer transitions 16/175 dead transitions. [2024-06-14 12:09:24,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 175 transitions, 1551 flow [2024-06-14 12:09:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:09:24,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-14 12:09:24,886 INFO L175 Difference]: Start difference. First operand has 180 places, 151 transitions, 1125 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:09:24,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 175 transitions, 1551 flow [2024-06-14 12:09:24,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 175 transitions, 1405 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:24,970 INFO L231 Difference]: Finished difference. Result has 179 places, 147 transitions, 1111 flow [2024-06-14 12:09:24,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1111, PETRI_PLACES=179, PETRI_TRANSITIONS=147} [2024-06-14 12:09:24,971 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-14 12:09:24,971 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 147 transitions, 1111 flow [2024-06-14 12:09:24,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:24,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:24,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:09:24,972 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)] === [2024-06-14 12:09:24,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:24,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1779410072, now seen corresponding path program 4 times [2024-06-14 12:09:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050596582] [2024-06-14 12:09:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:25,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:25,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050596582] [2024-06-14 12:09:25,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050596582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:25,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:25,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:25,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873624147] [2024-06-14 12:09:25,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:25,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:25,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:25,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:25,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:25,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:25,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 147 transitions, 1111 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:25,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:25,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:25,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:26,080 INFO L124 PetriNetUnfolderBase]: 422/785 cut-off events. [2024-06-14 12:09:26,080 INFO L125 PetriNetUnfolderBase]: For 51365/51365 co-relation queries the response was YES. [2024-06-14 12:09:26,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4087 conditions, 785 events. 422/785 cut-off events. For 51365/51365 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3779 event pairs, 59 based on Foata normal form. 8/793 useless extension candidates. Maximal degree in co-relation 4004. Up to 426 conditions per place. [2024-06-14 12:09:26,084 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 75 changer transitions 20/171 dead transitions. [2024-06-14 12:09:26,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 171 transitions, 1521 flow [2024-06-14 12:09:26,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:26,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:09:26,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:09:26,085 INFO L175 Difference]: Start difference. First operand has 179 places, 147 transitions, 1111 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:09:26,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 171 transitions, 1521 flow [2024-06-14 12:09:26,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 171 transitions, 1361 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:26,157 INFO L231 Difference]: Finished difference. Result has 174 places, 143 transitions, 1081 flow [2024-06-14 12:09:26,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1081, PETRI_PLACES=174, PETRI_TRANSITIONS=143} [2024-06-14 12:09:26,158 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-14 12:09:26,158 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 143 transitions, 1081 flow [2024-06-14 12:09:26,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:26,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:26,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:26,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:09:26,159 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)] === [2024-06-14 12:09:26,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash 176472856, now seen corresponding path program 5 times [2024-06-14 12:09:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15739631] [2024-06-14 12:09:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:26,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:26,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15739631] [2024-06-14 12:09:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15739631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:26,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:26,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:26,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368316265] [2024-06-14 12:09:26,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:26,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:27,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:27,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 143 transitions, 1081 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:27,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:27,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:27,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:27,365 INFO L124 PetriNetUnfolderBase]: 440/823 cut-off events. [2024-06-14 12:09:27,365 INFO L125 PetriNetUnfolderBase]: For 66584/66584 co-relation queries the response was YES. [2024-06-14 12:09:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 823 events. 440/823 cut-off events. For 66584/66584 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4021 event pairs, 68 based on Foata normal form. 8/831 useless extension candidates. Maximal degree in co-relation 4690. Up to 543 conditions per place. [2024-06-14 12:09:27,369 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 44 changer transitions 10/169 dead transitions. [2024-06-14 12:09:27,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 169 transitions, 1633 flow [2024-06-14 12:09:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 12:09:27,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-14 12:09:27,370 INFO L175 Difference]: Start difference. First operand has 174 places, 143 transitions, 1081 flow. Second operand 10 states and 129 transitions. [2024-06-14 12:09:27,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 169 transitions, 1633 flow [2024-06-14 12:09:27,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 169 transitions, 1467 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:27,496 INFO L231 Difference]: Finished difference. Result has 168 places, 141 transitions, 1002 flow [2024-06-14 12:09:27,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1002, PETRI_PLACES=168, PETRI_TRANSITIONS=141} [2024-06-14 12:09:27,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-14 12:09:27,497 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 1002 flow [2024-06-14 12:09:27,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:27,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:27,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:27,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:09:27,498 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)] === [2024-06-14 12:09:27,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:27,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1946859822, now seen corresponding path program 6 times [2024-06-14 12:09:27,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:27,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771752982] [2024-06-14 12:09:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:27,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:28,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771752982] [2024-06-14 12:09:28,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771752982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:28,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:28,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:28,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064565394] [2024-06-14 12:09:28,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:28,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:28,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:28,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:28,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:28,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:28,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 141 transitions, 1002 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:28,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:28,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:28,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:28,690 INFO L124 PetriNetUnfolderBase]: 409/762 cut-off events. [2024-06-14 12:09:28,690 INFO L125 PetriNetUnfolderBase]: For 46901/46901 co-relation queries the response was YES. [2024-06-14 12:09:28,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3831 conditions, 762 events. 409/762 cut-off events. For 46901/46901 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3640 event pairs, 57 based on Foata normal form. 10/772 useless extension candidates. Maximal degree in co-relation 3753. Up to 568 conditions per place. [2024-06-14 12:09:28,694 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 35 changer transitions 16/162 dead transitions. [2024-06-14 12:09:28,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1394 flow [2024-06-14 12:09:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 12:09:28,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-14 12:09:28,695 INFO L175 Difference]: Start difference. First operand has 168 places, 141 transitions, 1002 flow. Second operand 10 states and 121 transitions. [2024-06-14 12:09:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1394 flow [2024-06-14 12:09:28,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 162 transitions, 1304 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:28,800 INFO L231 Difference]: Finished difference. Result has 167 places, 137 transitions, 958 flow [2024-06-14 12:09:28,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=958, PETRI_PLACES=167, PETRI_TRANSITIONS=137} [2024-06-14 12:09:28,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-14 12:09:28,800 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 137 transitions, 958 flow [2024-06-14 12:09:28,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:28,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:28,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:28,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:09:28,801 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)] === [2024-06-14 12:09:28,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash -701851794, now seen corresponding path program 7 times [2024-06-14 12:09:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:28,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114422633] [2024-06-14 12:09:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:28,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:29,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114422633] [2024-06-14 12:09:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114422633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:29,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330156207] [2024-06-14 12:09:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:29,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:29,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:29,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:29,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:29,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 137 transitions, 958 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:29,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:29,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:29,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:30,093 INFO L124 PetriNetUnfolderBase]: 425/798 cut-off events. [2024-06-14 12:09:30,093 INFO L125 PetriNetUnfolderBase]: For 57989/57989 co-relation queries the response was YES. [2024-06-14 12:09:30,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4450 conditions, 798 events. 425/798 cut-off events. For 57989/57989 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3857 event pairs, 74 based on Foata normal form. 8/806 useless extension candidates. Maximal degree in co-relation 4373. Up to 497 conditions per place. [2024-06-14 12:09:30,097 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 106 selfloop transitions, 43 changer transitions 13/164 dead transitions. [2024-06-14 12:09:30,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 164 transitions, 1494 flow [2024-06-14 12:09:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:09:30,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-14 12:09:30,098 INFO L175 Difference]: Start difference. First operand has 167 places, 137 transitions, 958 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:09:30,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 164 transitions, 1494 flow [2024-06-14 12:09:30,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 164 transitions, 1416 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:30,244 INFO L231 Difference]: Finished difference. Result has 163 places, 134 transitions, 956 flow [2024-06-14 12:09:30,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=956, PETRI_PLACES=163, PETRI_TRANSITIONS=134} [2024-06-14 12:09:30,244 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-14 12:09:30,245 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 134 transitions, 956 flow [2024-06-14 12:09:30,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:30,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:30,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:30,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:09:30,245 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)] === [2024-06-14 12:09:30,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash -701736474, now seen corresponding path program 8 times [2024-06-14 12:09:30,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:30,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712699119] [2024-06-14 12:09:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:31,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:31,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712699119] [2024-06-14 12:09:31,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712699119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:31,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:31,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:31,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51024598] [2024-06-14 12:09:31,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:31,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:31,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:31,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 134 transitions, 956 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:31,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:31,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:31,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:31,664 INFO L124 PetriNetUnfolderBase]: 418/785 cut-off events. [2024-06-14 12:09:31,664 INFO L125 PetriNetUnfolderBase]: For 56034/56034 co-relation queries the response was YES. [2024-06-14 12:09:31,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 785 events. 418/785 cut-off events. For 56034/56034 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3790 event pairs, 67 based on Foata normal form. 8/793 useless extension candidates. Maximal degree in co-relation 4333. Up to 510 conditions per place. [2024-06-14 12:09:31,668 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 109 selfloop transitions, 41 changer transitions 10/162 dead transitions. [2024-06-14 12:09:31,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 162 transitions, 1499 flow [2024-06-14 12:09:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:31,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:09:31,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-14 12:09:31,681 INFO L175 Difference]: Start difference. First operand has 163 places, 134 transitions, 956 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:09:31,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 162 transitions, 1499 flow [2024-06-14 12:09:31,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 1400 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:31,799 INFO L231 Difference]: Finished difference. Result has 161 places, 134 transitions, 987 flow [2024-06-14 12:09:31,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=150, 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=987, PETRI_PLACES=161, PETRI_TRANSITIONS=134} [2024-06-14 12:09:31,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-14 12:09:31,800 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 134 transitions, 987 flow [2024-06-14 12:09:31,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:31,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:31,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:31,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:09:31,800 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)] === [2024-06-14 12:09:31,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash -701731824, now seen corresponding path program 9 times [2024-06-14 12:09:31,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:31,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578743027] [2024-06-14 12:09:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578743027] [2024-06-14 12:09:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578743027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:32,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:32,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:32,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543114599] [2024-06-14 12:09:32,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:32,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:32,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:32,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:32,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:32,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:32,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 134 transitions, 987 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:32,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:32,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:32,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:33,213 INFO L124 PetriNetUnfolderBase]: 387/724 cut-off events. [2024-06-14 12:09:33,213 INFO L125 PetriNetUnfolderBase]: For 40756/40756 co-relation queries the response was YES. [2024-06-14 12:09:33,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3705 conditions, 724 events. 387/724 cut-off events. For 40756/40756 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3415 event pairs, 55 based on Foata normal form. 10/734 useless extension candidates. Maximal degree in co-relation 3630. Up to 515 conditions per place. [2024-06-14 12:09:33,216 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 35 changer transitions 19/158 dead transitions. [2024-06-14 12:09:33,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 158 transitions, 1381 flow [2024-06-14 12:09:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:09:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:09:33,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:09:33,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-14 12:09:33,217 INFO L175 Difference]: Start difference. First operand has 161 places, 134 transitions, 987 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:09:33,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 158 transitions, 1381 flow [2024-06-14 12:09:33,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 158 transitions, 1330 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:33,301 INFO L231 Difference]: Finished difference. Result has 163 places, 127 transitions, 965 flow [2024-06-14 12:09:33,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=965, PETRI_PLACES=163, PETRI_TRANSITIONS=127} [2024-06-14 12:09:33,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-14 12:09:33,302 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 127 transitions, 965 flow [2024-06-14 12:09:33,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:33,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:33,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:09:33,303 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)] === [2024-06-14 12:09:33,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash -702446440, now seen corresponding path program 10 times [2024-06-14 12:09:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:33,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526387639] [2024-06-14 12:09:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:33,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:34,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526387639] [2024-06-14 12:09:34,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526387639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:34,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:34,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:34,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447865155] [2024-06-14 12:09:34,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:34,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:34,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:34,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:34,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:34,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:34,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 127 transitions, 965 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:34,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:34,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:34,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:34,582 INFO L124 PetriNetUnfolderBase]: 368/679 cut-off events. [2024-06-14 12:09:34,583 INFO L125 PetriNetUnfolderBase]: For 50241/50241 co-relation queries the response was YES. [2024-06-14 12:09:34,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4046 conditions, 679 events. 368/679 cut-off events. For 50241/50241 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3091 event pairs, 56 based on Foata normal form. 8/687 useless extension candidates. Maximal degree in co-relation 3972. Up to 226 conditions per place. [2024-06-14 12:09:34,587 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 65 changer transitions 10/151 dead transitions. [2024-06-14 12:09:34,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 151 transitions, 1459 flow [2024-06-14 12:09:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 12:09:34,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-14 12:09:34,588 INFO L175 Difference]: Start difference. First operand has 163 places, 127 transitions, 965 flow. Second operand 10 states and 122 transitions. [2024-06-14 12:09:34,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 151 transitions, 1459 flow [2024-06-14 12:09:34,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 1342 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-14 12:09:34,672 INFO L231 Difference]: Finished difference. Result has 151 places, 124 transitions, 973 flow [2024-06-14 12:09:34,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=973, PETRI_PLACES=151, PETRI_TRANSITIONS=124} [2024-06-14 12:09:34,673 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-14 12:09:34,673 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 124 transitions, 973 flow [2024-06-14 12:09:34,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:34,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:34,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:34,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:09:34,673 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)] === [2024-06-14 12:09:34,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1640178908, now seen corresponding path program 11 times [2024-06-14 12:09:34,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:34,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009439930] [2024-06-14 12:09:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:34,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:35,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:35,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:35,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009439930] [2024-06-14 12:09:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009439930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:35,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182561226] [2024-06-14 12:09:35,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:35,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:35,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:35,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:35,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:35,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:35,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 124 transitions, 973 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:35,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:35,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:35,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:36,032 INFO L124 PetriNetUnfolderBase]: 374/697 cut-off events. [2024-06-14 12:09:36,032 INFO L125 PetriNetUnfolderBase]: For 57151/57151 co-relation queries the response was YES. [2024-06-14 12:09:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 697 events. 374/697 cut-off events. For 57151/57151 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3263 event pairs, 76 based on Foata normal form. 18/715 useless extension candidates. Maximal degree in co-relation 4005. Up to 495 conditions per place. [2024-06-14 12:09:36,035 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 31 changer transitions 16/146 dead transitions. [2024-06-14 12:09:36,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 1343 flow [2024-06-14 12:09:36,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:09:36,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:09:36,041 INFO L175 Difference]: Start difference. First operand has 151 places, 124 transitions, 973 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:09:36,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 1343 flow [2024-06-14 12:09:36,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 1236 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:36,105 INFO L231 Difference]: Finished difference. Result has 149 places, 119 transitions, 896 flow [2024-06-14 12:09:36,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=896, PETRI_PLACES=149, PETRI_TRANSITIONS=119} [2024-06-14 12:09:36,106 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-14 12:09:36,106 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 119 transitions, 896 flow [2024-06-14 12:09:36,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:36,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:36,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:09:36,106 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)] === [2024-06-14 12:09:36,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash -702326470, now seen corresponding path program 12 times [2024-06-14 12:09:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622573753] [2024-06-14 12:09:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:37,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:37,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622573753] [2024-06-14 12:09:37,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622573753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:37,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:37,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:37,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276836428] [2024-06-14 12:09:37,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:37,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:37,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:37,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:37,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:37,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:37,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 119 transitions, 896 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:37,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:37,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:37,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:37,427 INFO L124 PetriNetUnfolderBase]: 352/655 cut-off events. [2024-06-14 12:09:37,428 INFO L125 PetriNetUnfolderBase]: For 45959/45959 co-relation queries the response was YES. [2024-06-14 12:09:37,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 655 events. 352/655 cut-off events. For 45959/45959 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3000 event pairs, 62 based on Foata normal form. 12/667 useless extension candidates. Maximal degree in co-relation 3783. Up to 389 conditions per place. [2024-06-14 12:09:37,431 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 68 selfloop transitions, 61 changer transitions 12/143 dead transitions. [2024-06-14 12:09:37,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 143 transitions, 1266 flow [2024-06-14 12:09:37,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:09:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:09:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:09:37,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-14 12:09:37,432 INFO L175 Difference]: Start difference. First operand has 149 places, 119 transitions, 896 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:09:37,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 143 transitions, 1266 flow [2024-06-14 12:09:37,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 1200 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:37,496 INFO L231 Difference]: Finished difference. Result has 147 places, 114 transitions, 928 flow [2024-06-14 12:09:37,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=928, PETRI_PLACES=147, PETRI_TRANSITIONS=114} [2024-06-14 12:09:37,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-14 12:09:37,496 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 114 transitions, 928 flow [2024-06-14 12:09:37,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:37,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:37,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:37,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:09:37,497 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)] === [2024-06-14 12:09:37,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:37,497 INFO L85 PathProgramCache]: Analyzing trace with hash -702331120, now seen corresponding path program 13 times [2024-06-14 12:09:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591148073] [2024-06-14 12:09:37,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:37,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:38,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:38,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591148073] [2024-06-14 12:09:38,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591148073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:38,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:38,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:38,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472019229] [2024-06-14 12:09:38,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:38,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:38,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:38,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:38,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:38,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:38,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 114 transitions, 928 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:38,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:38,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:38,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:38,571 INFO L124 PetriNetUnfolderBase]: 332/623 cut-off events. [2024-06-14 12:09:38,571 INFO L125 PetriNetUnfolderBase]: For 39440/39440 co-relation queries the response was YES. [2024-06-14 12:09:38,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3781 conditions, 623 events. 332/623 cut-off events. For 39440/39440 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2831 event pairs, 54 based on Foata normal form. 8/631 useless extension candidates. Maximal degree in co-relation 3713. Up to 349 conditions per place. [2024-06-14 12:09:38,574 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 51 selfloop transitions, 67 changer transitions 12/132 dead transitions. [2024-06-14 12:09:38,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 132 transitions, 1246 flow [2024-06-14 12:09:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:38,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 12:09:38,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-14 12:09:38,575 INFO L175 Difference]: Start difference. First operand has 147 places, 114 transitions, 928 flow. Second operand 10 states and 118 transitions. [2024-06-14 12:09:38,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 132 transitions, 1246 flow [2024-06-14 12:09:38,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 132 transitions, 1116 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:09:38,636 INFO L231 Difference]: Finished difference. Result has 143 places, 110 transitions, 909 flow [2024-06-14 12:09:38,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=909, PETRI_PLACES=143, PETRI_TRANSITIONS=110} [2024-06-14 12:09:38,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-14 12:09:38,637 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 110 transitions, 909 flow [2024-06-14 12:09:38,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:38,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:38,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:38,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:09:38,637 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)] === [2024-06-14 12:09:38,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:38,638 INFO L85 PathProgramCache]: Analyzing trace with hash 641772038, now seen corresponding path program 14 times [2024-06-14 12:09:38,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:38,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565439809] [2024-06-14 12:09:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:39,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:39,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565439809] [2024-06-14 12:09:39,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565439809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:39,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:39,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905892204] [2024-06-14 12:09:39,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:39,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:39,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:39,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:39,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:39,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:39,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 110 transitions, 909 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:39,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:39,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:39,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:39,844 INFO L124 PetriNetUnfolderBase]: 353/666 cut-off events. [2024-06-14 12:09:39,844 INFO L125 PetriNetUnfolderBase]: For 48257/48257 co-relation queries the response was YES. [2024-06-14 12:09:39,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 666 events. 353/666 cut-off events. For 48257/48257 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3101 event pairs, 73 based on Foata normal form. 8/674 useless extension candidates. Maximal degree in co-relation 4273. Up to 398 conditions per place. [2024-06-14 12:09:39,847 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 84 selfloop transitions, 42 changer transitions 7/135 dead transitions. [2024-06-14 12:09:39,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1361 flow [2024-06-14 12:09:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:09:39,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-14 12:09:39,848 INFO L175 Difference]: Start difference. First operand has 143 places, 110 transitions, 909 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:09:39,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1361 flow [2024-06-14 12:09:39,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 1207 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:39,909 INFO L231 Difference]: Finished difference. Result has 138 places, 108 transitions, 839 flow [2024-06-14 12:09:39,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=839, PETRI_PLACES=138, PETRI_TRANSITIONS=108} [2024-06-14 12:09:39,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-14 12:09:39,910 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 108 transitions, 839 flow [2024-06-14 12:09:39,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:39,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:39,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:39,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:09:39,911 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)] === [2024-06-14 12:09:39,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1640005928, now seen corresponding path program 15 times [2024-06-14 12:09:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618951914] [2024-06-14 12:09:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618951914] [2024-06-14 12:09:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618951914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:40,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:40,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414705536] [2024-06-14 12:09:40,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:40,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:40,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:40,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:40,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:40,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:40,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 108 transitions, 839 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:40,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:40,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:40,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:41,157 INFO L124 PetriNetUnfolderBase]: 351/664 cut-off events. [2024-06-14 12:09:41,157 INFO L125 PetriNetUnfolderBase]: For 44288/44288 co-relation queries the response was YES. [2024-06-14 12:09:41,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 664 events. 351/664 cut-off events. For 44288/44288 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3109 event pairs, 75 based on Foata normal form. 10/674 useless extension candidates. Maximal degree in co-relation 4053. Up to 463 conditions per place. [2024-06-14 12:09:41,161 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 38 changer transitions 13/129 dead transitions. [2024-06-14 12:09:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 129 transitions, 1165 flow [2024-06-14 12:09:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:41,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:41,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:09:41,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:09:41,162 INFO L175 Difference]: Start difference. First operand has 138 places, 108 transitions, 839 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:09:41,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 129 transitions, 1165 flow [2024-06-14 12:09:41,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 129 transitions, 1081 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:41,204 INFO L231 Difference]: Finished difference. Result has 137 places, 103 transitions, 796 flow [2024-06-14 12:09:41,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=796, PETRI_PLACES=137, PETRI_TRANSITIONS=103} [2024-06-14 12:09:41,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-14 12:09:41,205 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 103 transitions, 796 flow [2024-06-14 12:09:41,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:41,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:41,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:09:41,205 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)] === [2024-06-14 12:09:41,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1473767498, now seen corresponding path program 16 times [2024-06-14 12:09:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:41,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628309624] [2024-06-14 12:09:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:41,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:41,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628309624] [2024-06-14 12:09:41,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628309624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:41,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781815614] [2024-06-14 12:09:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:41,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:41,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:42,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:42,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 103 transitions, 796 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:42,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:42,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:42,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:42,320 INFO L124 PetriNetUnfolderBase]: 366/697 cut-off events. [2024-06-14 12:09:42,321 INFO L125 PetriNetUnfolderBase]: For 48944/48944 co-relation queries the response was YES. [2024-06-14 12:09:42,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 697 events. 366/697 cut-off events. For 48944/48944 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3332 event pairs, 80 based on Foata normal form. 8/705 useless extension candidates. Maximal degree in co-relation 4499. Up to 444 conditions per place. [2024-06-14 12:09:42,324 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 74 selfloop transitions, 43 changer transitions 8/127 dead transitions. [2024-06-14 12:09:42,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 1220 flow [2024-06-14 12:09:42,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:42,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:09:42,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:09:42,325 INFO L175 Difference]: Start difference. First operand has 137 places, 103 transitions, 796 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:09:42,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 1220 flow [2024-06-14 12:09:42,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 127 transitions, 1132 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:09:42,372 INFO L231 Difference]: Finished difference. Result has 131 places, 100 transitions, 781 flow [2024-06-14 12:09:42,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=781, PETRI_PLACES=131, PETRI_TRANSITIONS=100} [2024-06-14 12:09:42,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 12:09:42,373 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 100 transitions, 781 flow [2024-06-14 12:09:42,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:42,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:42,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:42,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:09:42,374 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)] === [2024-06-14 12:09:42,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:42,374 INFO L85 PathProgramCache]: Analyzing trace with hash 648443362, now seen corresponding path program 1 times [2024-06-14 12:09:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:42,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291647553] [2024-06-14 12:09:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:42,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:43,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291647553] [2024-06-14 12:09:43,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291647553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:43,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:43,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739983433] [2024-06-14 12:09:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:43,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:43,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 100 transitions, 781 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:43,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:43,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:43,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:43,857 INFO L124 PetriNetUnfolderBase]: 351/664 cut-off events. [2024-06-14 12:09:43,857 INFO L125 PetriNetUnfolderBase]: For 39894/39894 co-relation queries the response was YES. [2024-06-14 12:09:43,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 664 events. 351/664 cut-off events. For 39894/39894 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3111 event pairs, 79 based on Foata normal form. 2/666 useless extension candidates. Maximal degree in co-relation 4319. Up to 528 conditions per place. [2024-06-14 12:09:43,861 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 80 selfloop transitions, 33 changer transitions 0/115 dead transitions. [2024-06-14 12:09:43,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 115 transitions, 1053 flow [2024-06-14 12:09:43,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 12:09:43,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-14 12:09:43,862 INFO L175 Difference]: Start difference. First operand has 131 places, 100 transitions, 781 flow. Second operand 10 states and 112 transitions. [2024-06-14 12:09:43,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 115 transitions, 1053 flow [2024-06-14 12:09:43,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 115 transitions, 963 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:43,892 INFO L231 Difference]: Finished difference. Result has 128 places, 101 transitions, 773 flow [2024-06-14 12:09:43,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=773, PETRI_PLACES=128, PETRI_TRANSITIONS=101} [2024-06-14 12:09:43,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-14 12:09:43,892 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 101 transitions, 773 flow [2024-06-14 12:09:43,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:43,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:43,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:43,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:09:43,893 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)] === [2024-06-14 12:09:43,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash -697684840, now seen corresponding path program 17 times [2024-06-14 12:09:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105590794] [2024-06-14 12:09:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:43,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:44,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:44,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105590794] [2024-06-14 12:09:44,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105590794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:44,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:44,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:09:44,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389143837] [2024-06-14 12:09:44,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:44,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:09:44,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:44,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:09:44,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:09:44,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:44,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 101 transitions, 773 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:44,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:44,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:44,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:45,299 INFO L124 PetriNetUnfolderBase]: 338/641 cut-off events. [2024-06-14 12:09:45,299 INFO L125 PetriNetUnfolderBase]: For 34406/34406 co-relation queries the response was YES. [2024-06-14 12:09:45,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 641 events. 338/641 cut-off events. For 34406/34406 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2973 event pairs, 71 based on Foata normal form. 10/651 useless extension candidates. Maximal degree in co-relation 3769. Up to 478 conditions per place. [2024-06-14 12:09:45,302 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 76 selfloop transitions, 31 changer transitions 11/120 dead transitions. [2024-06-14 12:09:45,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 120 transitions, 1075 flow [2024-06-14 12:09:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:45,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 12:09:45,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-14 12:09:45,303 INFO L175 Difference]: Start difference. First operand has 128 places, 101 transitions, 773 flow. Second operand 10 states and 116 transitions. [2024-06-14 12:09:45,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 120 transitions, 1075 flow [2024-06-14 12:09:45,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1000 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:45,336 INFO L231 Difference]: Finished difference. Result has 130 places, 98 transitions, 737 flow [2024-06-14 12:09:45,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=737, PETRI_PLACES=130, PETRI_TRANSITIONS=98} [2024-06-14 12:09:45,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 12:09:45,336 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 98 transitions, 737 flow [2024-06-14 12:09:45,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:45,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:45,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:45,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:09:45,337 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)] === [2024-06-14 12:09:45,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash 648205778, now seen corresponding path program 18 times [2024-06-14 12:09:45,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:45,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93641585] [2024-06-14 12:09:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:45,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:46,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:46,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93641585] [2024-06-14 12:09:46,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93641585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:46,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:46,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202953228] [2024-06-14 12:09:46,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:46,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:46,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:46,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:46,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:46,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 98 transitions, 737 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:46,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:46,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:46,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:46,705 INFO L124 PetriNetUnfolderBase]: 299/568 cut-off events. [2024-06-14 12:09:46,705 INFO L125 PetriNetUnfolderBase]: For 28863/28863 co-relation queries the response was YES. [2024-06-14 12:09:46,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 568 events. 299/568 cut-off events. For 28863/28863 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2528 event pairs, 70 based on Foata normal form. 10/578 useless extension candidates. Maximal degree in co-relation 3145. Up to 405 conditions per place. [2024-06-14 12:09:46,708 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 26 changer transitions 11/118 dead transitions. [2024-06-14 12:09:46,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 118 transitions, 1037 flow [2024-06-14 12:09:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:09:46,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:09:46,721 INFO L175 Difference]: Start difference. First operand has 130 places, 98 transitions, 737 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:09:46,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 118 transitions, 1037 flow [2024-06-14 12:09:46,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 118 transitions, 971 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:46,762 INFO L231 Difference]: Finished difference. Result has 128 places, 95 transitions, 701 flow [2024-06-14 12:09:46,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=701, PETRI_PLACES=128, PETRI_TRANSITIONS=95} [2024-06-14 12:09:46,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-14 12:09:46,763 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 95 transitions, 701 flow [2024-06-14 12:09:46,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:46,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:46,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:46,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:09:46,764 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)] === [2024-06-14 12:09:46,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -524948996, now seen corresponding path program 2 times [2024-06-14 12:09:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685406001] [2024-06-14 12:09:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:47,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685406001] [2024-06-14 12:09:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685406001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:47,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:47,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531262848] [2024-06-14 12:09:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:47,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:47,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:47,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:47,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:47,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:47,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 95 transitions, 701 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:47,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:47,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:47,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:48,137 INFO L124 PetriNetUnfolderBase]: 277/526 cut-off events. [2024-06-14 12:09:48,138 INFO L125 PetriNetUnfolderBase]: For 21870/21870 co-relation queries the response was YES. [2024-06-14 12:09:48,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 526 events. 277/526 cut-off events. For 21870/21870 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2272 event pairs, 62 based on Foata normal form. 2/528 useless extension candidates. Maximal degree in co-relation 2953. Up to 393 conditions per place. [2024-06-14 12:09:48,141 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 81 selfloop transitions, 29 changer transitions 0/112 dead transitions. [2024-06-14 12:09:48,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 112 transitions, 973 flow [2024-06-14 12:09:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:09:48,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-14 12:09:48,142 INFO L175 Difference]: Start difference. First operand has 128 places, 95 transitions, 701 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:09:48,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 112 transitions, 973 flow [2024-06-14 12:09:48,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 112 transitions, 917 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:48,170 INFO L231 Difference]: Finished difference. Result has 125 places, 96 transitions, 721 flow [2024-06-14 12:09:48,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=721, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2024-06-14 12:09:48,171 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:09:48,171 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 721 flow [2024-06-14 12:09:48,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:48,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:48,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:48,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:09:48,172 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)] === [2024-06-14 12:09:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash -820030858, now seen corresponding path program 19 times [2024-06-14 12:09:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137103154] [2024-06-14 12:09:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137103154] [2024-06-14 12:09:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137103154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:49,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885172464] [2024-06-14 12:09:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:49,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:49,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:49,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:49,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 721 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:49,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:49,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:49,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:49,485 INFO L124 PetriNetUnfolderBase]: 293/562 cut-off events. [2024-06-14 12:09:49,485 INFO L125 PetriNetUnfolderBase]: For 26134/26134 co-relation queries the response was YES. [2024-06-14 12:09:49,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3113 conditions, 562 events. 293/562 cut-off events. For 26134/26134 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2514 event pairs, 68 based on Foata normal form. 10/572 useless extension candidates. Maximal degree in co-relation 3055. Up to 427 conditions per place. [2024-06-14 12:09:49,487 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 73 selfloop transitions, 31 changer transitions 11/117 dead transitions. [2024-06-14 12:09:49,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 117 transitions, 1023 flow [2024-06-14 12:09:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:49,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:49,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 12:09:49,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-14 12:09:49,489 INFO L175 Difference]: Start difference. First operand has 125 places, 96 transitions, 721 flow. Second operand 11 states and 130 transitions. [2024-06-14 12:09:49,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 117 transitions, 1023 flow [2024-06-14 12:09:49,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 117 transitions, 957 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:09:49,520 INFO L231 Difference]: Finished difference. Result has 127 places, 93 transitions, 700 flow [2024-06-14 12:09:49,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=700, PETRI_PLACES=127, PETRI_TRANSITIONS=93} [2024-06-14 12:09:49,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-14 12:09:49,521 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 93 transitions, 700 flow [2024-06-14 12:09:49,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:49,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:49,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:49,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:09:49,522 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)] === [2024-06-14 12:09:49,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1734289812, now seen corresponding path program 3 times [2024-06-14 12:09:49,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:49,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702753102] [2024-06-14 12:09:49,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:49,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:50,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:50,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702753102] [2024-06-14 12:09:50,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702753102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:50,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:50,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:50,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506787008] [2024-06-14 12:09:50,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:50,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:50,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:50,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:50,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:50,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 93 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:50,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:50,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:50,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:50,793 INFO L124 PetriNetUnfolderBase]: 273/522 cut-off events. [2024-06-14 12:09:50,794 INFO L125 PetriNetUnfolderBase]: For 21838/21838 co-relation queries the response was YES. [2024-06-14 12:09:50,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 522 events. 273/522 cut-off events. For 21838/21838 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2265 event pairs, 72 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 2947. Up to 473 conditions per place. [2024-06-14 12:09:50,799 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-14 12:09:50,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 107 transitions, 956 flow [2024-06-14 12:09:50,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:50,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:09:50,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:09:50,812 INFO L175 Difference]: Start difference. First operand has 127 places, 93 transitions, 700 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:09:50,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 107 transitions, 956 flow [2024-06-14 12:09:50,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 107 transitions, 890 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:50,841 INFO L231 Difference]: Finished difference. Result has 124 places, 94 transitions, 695 flow [2024-06-14 12:09:50,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=695, PETRI_PLACES=124, PETRI_TRANSITIONS=94} [2024-06-14 12:09:50,841 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-14 12:09:50,841 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 94 transitions, 695 flow [2024-06-14 12:09:50,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:50,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:50,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:09:50,842 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)] === [2024-06-14 12:09:50,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1734282868, now seen corresponding path program 20 times [2024-06-14 12:09:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:50,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413349220] [2024-06-14 12:09:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:51,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413349220] [2024-06-14 12:09:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413349220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:51,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:51,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38791539] [2024-06-14 12:09:51,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:51,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:51,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:51,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:51,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 94 transitions, 695 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:51,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:51,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:51,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:52,098 INFO L124 PetriNetUnfolderBase]: 260/499 cut-off events. [2024-06-14 12:09:52,099 INFO L125 PetriNetUnfolderBase]: For 19332/19332 co-relation queries the response was YES. [2024-06-14 12:09:52,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2523 conditions, 499 events. 260/499 cut-off events. For 19332/19332 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2135 event pairs, 57 based on Foata normal form. 10/509 useless extension candidates. Maximal degree in co-relation 2465. Up to 406 conditions per place. [2024-06-14 12:09:52,101 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 82 selfloop transitions, 17 changer transitions 12/113 dead transitions. [2024-06-14 12:09:52,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 113 transitions, 981 flow [2024-06-14 12:09:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 12:09:52,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:09:52,102 INFO L175 Difference]: Start difference. First operand has 124 places, 94 transitions, 695 flow. Second operand 11 states and 121 transitions. [2024-06-14 12:09:52,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 113 transitions, 981 flow [2024-06-14 12:09:52,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 113 transitions, 932 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:52,123 INFO L231 Difference]: Finished difference. Result has 127 places, 90 transitions, 654 flow [2024-06-14 12:09:52,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=654, PETRI_PLACES=127, PETRI_TRANSITIONS=90} [2024-06-14 12:09:52,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-14 12:09:52,123 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 90 transitions, 654 flow [2024-06-14 12:09:52,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:52,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:52,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:52,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:09:52,124 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)] === [2024-06-14 12:09:52,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:52,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1734528822, now seen corresponding path program 4 times [2024-06-14 12:09:52,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:52,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540815882] [2024-06-14 12:09:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:52,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:52,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:52,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540815882] [2024-06-14 12:09:52,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540815882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:52,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:52,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986160326] [2024-06-14 12:09:52,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:53,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:53,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 90 transitions, 654 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:53,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:53,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:53,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:53,297 INFO L124 PetriNetUnfolderBase]: 236/455 cut-off events. [2024-06-14 12:09:53,298 INFO L125 PetriNetUnfolderBase]: For 14736/14736 co-relation queries the response was YES. [2024-06-14 12:09:53,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 455 events. 236/455 cut-off events. For 14736/14736 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1906 event pairs, 53 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2319. Up to 390 conditions per place. [2024-06-14 12:09:53,300 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-14 12:09:53,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 104 transitions, 904 flow [2024-06-14 12:09:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:53,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:09:53,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:09:53,301 INFO L175 Difference]: Start difference. First operand has 127 places, 90 transitions, 654 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:09:53,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 104 transitions, 904 flow [2024-06-14 12:09:53,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 104 transitions, 866 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:53,323 INFO L231 Difference]: Finished difference. Result has 124 places, 91 transitions, 674 flow [2024-06-14 12:09:53,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=674, PETRI_PLACES=124, PETRI_TRANSITIONS=91} [2024-06-14 12:09:53,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-14 12:09:53,324 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 91 transitions, 674 flow [2024-06-14 12:09:53,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:53,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:53,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:53,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:09:53,325 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)] === [2024-06-14 12:09:53,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1922028062, now seen corresponding path program 5 times [2024-06-14 12:09:53,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:53,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095355825] [2024-06-14 12:09:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:54,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:54,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095355825] [2024-06-14 12:09:54,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095355825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:54,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:54,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284202957] [2024-06-14 12:09:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:54,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:54,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:54,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:54,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 91 transitions, 674 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:54,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:54,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:54,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:54,583 INFO L124 PetriNetUnfolderBase]: 240/463 cut-off events. [2024-06-14 12:09:54,583 INFO L125 PetriNetUnfolderBase]: For 14238/14238 co-relation queries the response was YES. [2024-06-14 12:09:54,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 463 events. 240/463 cut-off events. For 14238/14238 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1969 event pairs, 49 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2365. Up to 416 conditions per place. [2024-06-14 12:09:54,585 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-14 12:09:54,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 105 transitions, 930 flow [2024-06-14 12:09:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-14 12:09:54,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-14 12:09:54,586 INFO L175 Difference]: Start difference. First operand has 124 places, 91 transitions, 674 flow. Second operand 10 states and 109 transitions. [2024-06-14 12:09:54,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 105 transitions, 930 flow [2024-06-14 12:09:54,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 105 transitions, 882 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:54,607 INFO L231 Difference]: Finished difference. Result has 126 places, 92 transitions, 686 flow [2024-06-14 12:09:54,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=126, PETRI_TRANSITIONS=92} [2024-06-14 12:09:54,607 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-14 12:09:54,607 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 92 transitions, 686 flow [2024-06-14 12:09:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:54,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:54,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:09:54,608 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)] === [2024-06-14 12:09:54,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:54,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1372999648, now seen corresponding path program 6 times [2024-06-14 12:09:54,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925441478] [2024-06-14 12:09:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:55,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:55,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925441478] [2024-06-14 12:09:55,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925441478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:55,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:55,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:55,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715325575] [2024-06-14 12:09:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:55,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:55,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:55,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:55,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:55,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:55,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 92 transitions, 686 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:55,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:55,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:55,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:55,869 INFO L124 PetriNetUnfolderBase]: 244/471 cut-off events. [2024-06-14 12:09:55,870 INFO L125 PetriNetUnfolderBase]: For 15128/15128 co-relation queries the response was YES. [2024-06-14 12:09:55,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 471 events. 244/471 cut-off events. For 15128/15128 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2008 event pairs, 47 based on Foata normal form. 2/473 useless extension candidates. Maximal degree in co-relation 2423. Up to 412 conditions per place. [2024-06-14 12:09:55,871 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 22 changer transitions 0/108 dead transitions. [2024-06-14 12:09:55,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 108 transitions, 958 flow [2024-06-14 12:09:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-14 12:09:55,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-14 12:09:55,873 INFO L175 Difference]: Start difference. First operand has 126 places, 92 transitions, 686 flow. Second operand 10 states and 114 transitions. [2024-06-14 12:09:55,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 108 transitions, 958 flow [2024-06-14 12:09:55,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 108 transitions, 908 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:55,894 INFO L231 Difference]: Finished difference. Result has 128 places, 93 transitions, 706 flow [2024-06-14 12:09:55,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=706, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2024-06-14 12:09:55,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-14 12:09:55,895 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 706 flow [2024-06-14 12:09:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:55,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:55,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:55,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:09:55,896 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)] === [2024-06-14 12:09:55,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1372815074, now seen corresponding path program 21 times [2024-06-14 12:09:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744655503] [2024-06-14 12:09:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744655503] [2024-06-14 12:09:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744655503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:56,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:56,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723246264] [2024-06-14 12:09:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:56,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:56,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 706 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:56,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:56,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:56,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:57,131 INFO L124 PetriNetUnfolderBase]: 285/558 cut-off events. [2024-06-14 12:09:57,132 INFO L125 PetriNetUnfolderBase]: For 27655/27655 co-relation queries the response was YES. [2024-06-14 12:09:57,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 558 events. 285/558 cut-off events. For 27655/27655 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2546 event pairs, 58 based on Foata normal form. 8/566 useless extension candidates. Maximal degree in co-relation 3077. Up to 362 conditions per place. [2024-06-14 12:09:57,134 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 29 changer transitions 8/118 dead transitions. [2024-06-14 12:09:57,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 118 transitions, 1108 flow [2024-06-14 12:09:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:57,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 12:09:57,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-14 12:09:57,136 INFO L175 Difference]: Start difference. First operand has 128 places, 93 transitions, 706 flow. Second operand 11 states and 132 transitions. [2024-06-14 12:09:57,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 118 transitions, 1108 flow [2024-06-14 12:09:57,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 118 transitions, 1048 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 12:09:57,172 INFO L231 Difference]: Finished difference. Result has 131 places, 90 transitions, 685 flow [2024-06-14 12:09:57,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=685, PETRI_PLACES=131, PETRI_TRANSITIONS=90} [2024-06-14 12:09:57,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-14 12:09:57,172 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 90 transitions, 685 flow [2024-06-14 12:09:57,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:57,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:57,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:57,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:09:57,173 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)] === [2024-06-14 12:09:57,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1898194810, now seen corresponding path program 22 times [2024-06-14 12:09:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399877290] [2024-06-14 12:09:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:57,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:58,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:58,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399877290] [2024-06-14 12:09:58,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399877290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:58,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:58,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:58,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047909929] [2024-06-14 12:09:58,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:58,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:58,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:58,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:58,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 90 transitions, 685 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:58,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:58,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:58,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:58,448 INFO L124 PetriNetUnfolderBase]: 282/553 cut-off events. [2024-06-14 12:09:58,448 INFO L125 PetriNetUnfolderBase]: For 30486/30486 co-relation queries the response was YES. [2024-06-14 12:09:58,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 553 events. 282/553 cut-off events. For 30486/30486 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2528 event pairs, 72 based on Foata normal form. 10/563 useless extension candidates. Maximal degree in co-relation 3065. Up to 450 conditions per place. [2024-06-14 12:09:58,451 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 79 selfloop transitions, 19 changer transitions 11/111 dead transitions. [2024-06-14 12:09:58,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 111 transitions, 975 flow [2024-06-14 12:09:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:09:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:09:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 12:09:58,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-14 12:09:58,452 INFO L175 Difference]: Start difference. First operand has 131 places, 90 transitions, 685 flow. Second operand 11 states and 127 transitions. [2024-06-14 12:09:58,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 111 transitions, 975 flow [2024-06-14 12:09:58,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 111 transitions, 915 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:09:58,480 INFO L231 Difference]: Finished difference. Result has 128 places, 87 transitions, 640 flow [2024-06-14 12:09:58,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=640, PETRI_PLACES=128, PETRI_TRANSITIONS=87} [2024-06-14 12:09:58,480 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2024-06-14 12:09:58,480 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 87 transitions, 640 flow [2024-06-14 12:09:58,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:58,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:58,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:09:58,481 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)] === [2024-06-14 12:09:58,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2029748022, now seen corresponding path program 7 times [2024-06-14 12:09:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:58,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441045178] [2024-06-14 12:09:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:09:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:09:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:09:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441045178] [2024-06-14 12:09:59,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441045178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:09:59,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:09:59,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:09:59,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323667190] [2024-06-14 12:09:59,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:09:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:09:59,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:09:59,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:09:59,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:09:59,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:09:59,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 87 transitions, 640 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:59,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:09:59,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:09:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:09:59,680 INFO L124 PetriNetUnfolderBase]: 260/511 cut-off events. [2024-06-14 12:09:59,680 INFO L125 PetriNetUnfolderBase]: For 22032/22032 co-relation queries the response was YES. [2024-06-14 12:09:59,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2924 conditions, 511 events. 260/511 cut-off events. For 22032/22032 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2262 event pairs, 70 based on Foata normal form. 2/513 useless extension candidates. Maximal degree in co-relation 2865. Up to 468 conditions per place. [2024-06-14 12:09:59,682 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 14 changer transitions 0/101 dead transitions. [2024-06-14 12:09:59,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 101 transitions, 888 flow [2024-06-14 12:09:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:09:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:09:59,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 12:09:59,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-14 12:09:59,683 INFO L175 Difference]: Start difference. First operand has 128 places, 87 transitions, 640 flow. Second operand 10 states and 105 transitions. [2024-06-14 12:09:59,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 101 transitions, 888 flow [2024-06-14 12:09:59,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 101 transitions, 846 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:09:59,712 INFO L231 Difference]: Finished difference. Result has 125 places, 88 transitions, 654 flow [2024-06-14 12:09:59,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=654, PETRI_PLACES=125, PETRI_TRANSITIONS=88} [2024-06-14 12:09:59,712 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-14 12:09:59,712 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 88 transitions, 654 flow [2024-06-14 12:09:59,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:09:59,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:09:59,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:09:59,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:09:59,713 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)] === [2024-06-14 12:09:59,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:09:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1891701116, now seen corresponding path program 8 times [2024-06-14 12:09:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:09:59,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647968864] [2024-06-14 12:09:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:09:59,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:09:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647968864] [2024-06-14 12:10:00,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647968864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:00,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072025285] [2024-06-14 12:10:00,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:00,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:00,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:00,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:00,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:00,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:00,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 88 transitions, 654 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:00,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:00,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:00,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:01,078 INFO L124 PetriNetUnfolderBase]: 259/516 cut-off events. [2024-06-14 12:10:01,079 INFO L125 PetriNetUnfolderBase]: For 24724/24724 co-relation queries the response was YES. [2024-06-14 12:10:01,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 516 events. 259/516 cut-off events. For 24724/24724 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2348 event pairs, 59 based on Foata normal form. 18/534 useless extension candidates. Maximal degree in co-relation 2511. Up to 383 conditions per place. [2024-06-14 12:10:01,081 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 17 changer transitions 16/112 dead transitions. [2024-06-14 12:10:01,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 112 transitions, 974 flow [2024-06-14 12:10:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:10:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:10:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 142 transitions. [2024-06-14 12:10:01,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523573200992556 [2024-06-14 12:10:01,082 INFO L175 Difference]: Start difference. First operand has 125 places, 88 transitions, 654 flow. Second operand 13 states and 142 transitions. [2024-06-14 12:10:01,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 112 transitions, 974 flow [2024-06-14 12:10:01,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 112 transitions, 928 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:10:01,104 INFO L231 Difference]: Finished difference. Result has 130 places, 83 transitions, 606 flow [2024-06-14 12:10:01,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=606, PETRI_PLACES=130, PETRI_TRANSITIONS=83} [2024-06-14 12:10:01,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-14 12:10:01,113 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 83 transitions, 606 flow [2024-06-14 12:10:01,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:01,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:01,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:01,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:10:01,114 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)] === [2024-06-14 12:10:01,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1928514812, now seen corresponding path program 9 times [2024-06-14 12:10:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:01,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317816909] [2024-06-14 12:10:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:02,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:02,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317816909] [2024-06-14 12:10:02,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317816909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:02,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:02,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:02,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514654377] [2024-06-14 12:10:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:02,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:02,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:02,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:02,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:02,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:02,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 83 transitions, 606 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:02,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:02,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:02,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:02,470 INFO L124 PetriNetUnfolderBase]: 243/492 cut-off events. [2024-06-14 12:10:02,471 INFO L125 PetriNetUnfolderBase]: For 25792/25792 co-relation queries the response was YES. [2024-06-14 12:10:02,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 492 events. 243/492 cut-off events. For 25792/25792 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2234 event pairs, 57 based on Foata normal form. 18/510 useless extension candidates. Maximal degree in co-relation 2381. Up to 371 conditions per place. [2024-06-14 12:10:02,473 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 14 changer transitions 16/104 dead transitions. [2024-06-14 12:10:02,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 104 transitions, 902 flow [2024-06-14 12:10:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-14 12:10:02,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-14 12:10:02,474 INFO L175 Difference]: Start difference. First operand has 130 places, 83 transitions, 606 flow. Second operand 11 states and 124 transitions. [2024-06-14 12:10:02,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 104 transitions, 902 flow [2024-06-14 12:10:02,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 104 transitions, 864 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:10:02,497 INFO L231 Difference]: Finished difference. Result has 124 places, 78 transitions, 564 flow [2024-06-14 12:10:02,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=564, PETRI_PLACES=124, PETRI_TRANSITIONS=78} [2024-06-14 12:10:02,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-14 12:10:02,497 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 78 transitions, 564 flow [2024-06-14 12:10:02,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:02,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:02,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:02,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:10:02,498 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)] === [2024-06-14 12:10:02,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:02,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1379494768, now seen corresponding path program 10 times [2024-06-14 12:10:02,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:02,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387839996] [2024-06-14 12:10:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:02,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387839996] [2024-06-14 12:10:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387839996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770922192] [2024-06-14 12:10:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 78 transitions, 564 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:04,035 INFO L124 PetriNetUnfolderBase]: 205/414 cut-off events. [2024-06-14 12:10:04,035 INFO L125 PetriNetUnfolderBase]: For 14179/14179 co-relation queries the response was YES. [2024-06-14 12:10:04,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 414 events. 205/414 cut-off events. For 14179/14179 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1754 event pairs, 47 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 2105. Up to 340 conditions per place. [2024-06-14 12:10:04,037 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 71 selfloop transitions, 23 changer transitions 0/96 dead transitions. [2024-06-14 12:10:04,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 96 transitions, 818 flow [2024-06-14 12:10:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:10:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:10:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 12:10:04,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-14 12:10:04,038 INFO L175 Difference]: Start difference. First operand has 124 places, 78 transitions, 564 flow. Second operand 12 states and 128 transitions. [2024-06-14 12:10:04,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 96 transitions, 818 flow [2024-06-14 12:10:04,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 96 transitions, 786 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:04,061 INFO L231 Difference]: Finished difference. Result has 122 places, 79 transitions, 608 flow [2024-06-14 12:10:04,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=608, PETRI_PLACES=122, PETRI_TRANSITIONS=79} [2024-06-14 12:10:04,062 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-14 12:10:04,062 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 79 transitions, 608 flow [2024-06-14 12:10:04,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:04,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:04,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:04,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:10:04,063 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)] === [2024-06-14 12:10:04,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1928694736, now seen corresponding path program 23 times [2024-06-14 12:10:04,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:04,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343502150] [2024-06-14 12:10:04,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:04,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:05,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:05,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:05,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343502150] [2024-06-14 12:10:05,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343502150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:05,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:05,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:05,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610065235] [2024-06-14 12:10:05,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:05,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:05,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:05,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:05,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:05,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:05,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 79 transitions, 608 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:05,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:05,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:05,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:05,407 INFO L124 PetriNetUnfolderBase]: 221/450 cut-off events. [2024-06-14 12:10:05,408 INFO L125 PetriNetUnfolderBase]: For 18670/18670 co-relation queries the response was YES. [2024-06-14 12:10:05,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 450 events. 221/450 cut-off events. For 18670/18670 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1993 event pairs, 51 based on Foata normal form. 10/460 useless extension candidates. Maximal degree in co-relation 2229. Up to 356 conditions per place. [2024-06-14 12:10:05,410 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 17 changer transitions 11/99 dead transitions. [2024-06-14 12:10:05,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 99 transitions, 870 flow [2024-06-14 12:10:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:05,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 12:10:05,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-14 12:10:05,436 INFO L175 Difference]: Start difference. First operand has 122 places, 79 transitions, 608 flow. Second operand 11 states and 123 transitions. [2024-06-14 12:10:05,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 99 transitions, 870 flow [2024-06-14 12:10:05,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 99 transitions, 804 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-14 12:10:05,458 INFO L231 Difference]: Finished difference. Result has 123 places, 76 transitions, 559 flow [2024-06-14 12:10:05,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=123, PETRI_TRANSITIONS=76} [2024-06-14 12:10:05,458 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-14 12:10:05,458 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 76 transitions, 559 flow [2024-06-14 12:10:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:05,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:05,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:10:05,459 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)] === [2024-06-14 12:10:05,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1922265646, now seen corresponding path program 24 times [2024-06-14 12:10:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606309277] [2024-06-14 12:10:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:05,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:06,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:06,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:06,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606309277] [2024-06-14 12:10:06,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606309277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:06,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:06,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:06,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800608657] [2024-06-14 12:10:06,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:06,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:06,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:06,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:06,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:06,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 76 transitions, 559 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:06,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:06,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:06,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:06,791 INFO L124 PetriNetUnfolderBase]: 206/425 cut-off events. [2024-06-14 12:10:06,792 INFO L125 PetriNetUnfolderBase]: For 18022/18022 co-relation queries the response was YES. [2024-06-14 12:10:06,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 425 events. 206/425 cut-off events. For 18022/18022 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1842 event pairs, 52 based on Foata normal form. 10/435 useless extension candidates. Maximal degree in co-relation 2025. Up to 340 conditions per place. [2024-06-14 12:10:06,794 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 69 selfloop transitions, 13 changer transitions 11/95 dead transitions. [2024-06-14 12:10:06,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 95 transitions, 809 flow [2024-06-14 12:10:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:06,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-14 12:10:06,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:10:06,795 INFO L175 Difference]: Start difference. First operand has 123 places, 76 transitions, 559 flow. Second operand 11 states and 121 transitions. [2024-06-14 12:10:06,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 95 transitions, 809 flow [2024-06-14 12:10:06,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 95 transitions, 771 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:10:06,814 INFO L231 Difference]: Finished difference. Result has 121 places, 73 transitions, 526 flow [2024-06-14 12:10:06,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=526, PETRI_PLACES=121, PETRI_TRANSITIONS=73} [2024-06-14 12:10:06,823 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-14 12:10:06,823 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 73 transitions, 526 flow [2024-06-14 12:10:06,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:06,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:06,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:06,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:10:06,824 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)] === [2024-06-14 12:10:06,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:06,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1922019692, now seen corresponding path program 11 times [2024-06-14 12:10:06,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:06,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104164626] [2024-06-14 12:10:06,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:07,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104164626] [2024-06-14 12:10:07,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104164626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:07,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:07,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131402975] [2024-06-14 12:10:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:07,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:07,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:07,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:07,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 73 transitions, 526 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:07,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:07,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:07,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:08,103 INFO L124 PetriNetUnfolderBase]: 177/370 cut-off events. [2024-06-14 12:10:08,104 INFO L125 PetriNetUnfolderBase]: For 10726/10726 co-relation queries the response was YES. [2024-06-14 12:10:08,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 370 events. 177/370 cut-off events. For 10726/10726 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1537 event pairs, 47 based on Foata normal form. 2/372 useless extension candidates. Maximal degree in co-relation 1713. Up to 315 conditions per place. [2024-06-14 12:10:08,106 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-14 12:10:08,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 86 transitions, 724 flow [2024-06-14 12:10:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:08,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 12:10:08,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-14 12:10:08,107 INFO L175 Difference]: Start difference. First operand has 121 places, 73 transitions, 526 flow. Second operand 10 states and 108 transitions. [2024-06-14 12:10:08,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 86 transitions, 724 flow [2024-06-14 12:10:08,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 86 transitions, 692 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:10:08,125 INFO L231 Difference]: Finished difference. Result has 118 places, 73 transitions, 528 flow [2024-06-14 12:10:08,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=528, PETRI_PLACES=118, PETRI_TRANSITIONS=73} [2024-06-14 12:10:08,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-14 12:10:08,126 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 73 transitions, 528 flow [2024-06-14 12:10:08,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:08,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:08,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:08,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:10:08,126 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)] === [2024-06-14 12:10:08,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:08,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1204997808, now seen corresponding path program 25 times [2024-06-14 12:10:08,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707461089] [2024-06-14 12:10:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:08,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:08,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707461089] [2024-06-14 12:10:08,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707461089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:08,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:08,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578531312] [2024-06-14 12:10:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:08,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:08,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:08,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 73 transitions, 528 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:08,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:08,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:08,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:09,172 INFO L124 PetriNetUnfolderBase]: 167/352 cut-off events. [2024-06-14 12:10:09,173 INFO L125 PetriNetUnfolderBase]: For 8880/8880 co-relation queries the response was YES. [2024-06-14 12:10:09,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1433 conditions, 352 events. 167/352 cut-off events. For 8880/8880 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1460 event pairs, 27 based on Foata normal form. 8/360 useless extension candidates. Maximal degree in co-relation 1377. Up to 250 conditions per place. [2024-06-14 12:10:09,174 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 57 selfloop transitions, 19 changer transitions 12/90 dead transitions. [2024-06-14 12:10:09,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 90 transitions, 746 flow [2024-06-14 12:10:09,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-14 12:10:09,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-14 12:10:09,175 INFO L175 Difference]: Start difference. First operand has 118 places, 73 transitions, 528 flow. Second operand 11 states and 120 transitions. [2024-06-14 12:10:09,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 90 transitions, 746 flow [2024-06-14 12:10:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 90 transitions, 670 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:09,185 INFO L231 Difference]: Finished difference. Result has 120 places, 68 transitions, 454 flow [2024-06-14 12:10:09,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=454, PETRI_PLACES=120, PETRI_TRANSITIONS=68} [2024-06-14 12:10:09,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2024-06-14 12:10:09,186 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 68 transitions, 454 flow [2024-06-14 12:10:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:09,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:09,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:09,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:10:09,187 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)] === [2024-06-14 12:10:09,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1862506733, now seen corresponding path program 1 times [2024-06-14 12:10:09,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081895081] [2024-06-14 12:10:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:10,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:10,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081895081] [2024-06-14 12:10:10,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081895081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:10,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:10,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:10:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539420807] [2024-06-14 12:10:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:10,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:10:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:10:10,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:10:10,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:10,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 68 transitions, 454 flow. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:10,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:10,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:10,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:10,366 INFO L124 PetriNetUnfolderBase]: 155/328 cut-off events. [2024-06-14 12:10:10,380 INFO L125 PetriNetUnfolderBase]: For 7994/7994 co-relation queries the response was YES. [2024-06-14 12:10:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 328 events. 155/328 cut-off events. For 7994/7994 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1343 event pairs, 29 based on Foata normal form. 6/334 useless extension candidates. Maximal degree in co-relation 1213. Up to 202 conditions per place. [2024-06-14 12:10:10,382 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 15 changer transitions 15/85 dead transitions. [2024-06-14 12:10:10,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 85 transitions, 666 flow [2024-06-14 12:10:10,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 12:10:10,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-14 12:10:10,383 INFO L175 Difference]: Start difference. First operand has 120 places, 68 transitions, 454 flow. Second operand 10 states and 110 transitions. [2024-06-14 12:10:10,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 85 transitions, 666 flow [2024-06-14 12:10:10,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 85 transitions, 596 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:10:10,392 INFO L231 Difference]: Finished difference. Result has 110 places, 62 transitions, 390 flow [2024-06-14 12:10:10,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=110, PETRI_TRANSITIONS=62} [2024-06-14 12:10:10,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-14 12:10:10,392 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 62 transitions, 390 flow [2024-06-14 12:10:10,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:10,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:10,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:10,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:10:10,393 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)] === [2024-06-14 12:10:10,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1373091429, now seen corresponding path program 2 times [2024-06-14 12:10:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060287285] [2024-06-14 12:10:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:10,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:11,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:11,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060287285] [2024-06-14 12:10:11,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060287285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:11,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:11,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:11,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518198101] [2024-06-14 12:10:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:11,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:11,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:11,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:11,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 62 transitions, 390 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:11,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:11,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:11,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:11,958 INFO L124 PetriNetUnfolderBase]: 143/304 cut-off events. [2024-06-14 12:10:11,959 INFO L125 PetriNetUnfolderBase]: For 7132/7132 co-relation queries the response was YES. [2024-06-14 12:10:11,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 304 events. 143/304 cut-off events. For 7132/7132 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1205 event pairs, 31 based on Foata normal form. 6/310 useless extension candidates. Maximal degree in co-relation 1073. Up to 192 conditions per place. [2024-06-14 12:10:11,960 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 53 selfloop transitions, 14 changer transitions 11/80 dead transitions. [2024-06-14 12:10:11,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 80 transitions, 592 flow [2024-06-14 12:10:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 12:10:11,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-14 12:10:11,961 INFO L175 Difference]: Start difference. First operand has 110 places, 62 transitions, 390 flow. Second operand 11 states and 117 transitions. [2024-06-14 12:10:11,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 80 transitions, 592 flow [2024-06-14 12:10:11,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 80 transitions, 554 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:11,969 INFO L231 Difference]: Finished difference. Result has 104 places, 59 transitions, 367 flow [2024-06-14 12:10:11,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=367, PETRI_PLACES=104, PETRI_TRANSITIONS=59} [2024-06-14 12:10:11,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-14 12:10:11,970 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 59 transitions, 367 flow [2024-06-14 12:10:11,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:11,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:11,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:11,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:10:11,970 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)] === [2024-06-14 12:10:11,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash 906451137, now seen corresponding path program 3 times [2024-06-14 12:10:11,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:11,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914845933] [2024-06-14 12:10:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:11,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:13,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:13,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914845933] [2024-06-14 12:10:13,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914845933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:13,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:13,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:13,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388520964] [2024-06-14 12:10:13,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:13,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:13,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:13,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:13,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:13,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 59 transitions, 367 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:13,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:13,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:13,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:13,382 INFO L124 PetriNetUnfolderBase]: 133/286 cut-off events. [2024-06-14 12:10:13,383 INFO L125 PetriNetUnfolderBase]: For 5944/5944 co-relation queries the response was YES. [2024-06-14 12:10:13,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 286 events. 133/286 cut-off events. For 5944/5944 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1097 event pairs, 29 based on Foata normal form. 6/292 useless extension candidates. Maximal degree in co-relation 997. Up to 174 conditions per place. [2024-06-14 12:10:13,384 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 9 changer transitions 22/77 dead transitions. [2024-06-14 12:10:13,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 77 transitions, 561 flow [2024-06-14 12:10:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-14 12:10:13,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-14 12:10:13,385 INFO L175 Difference]: Start difference. First operand has 104 places, 59 transitions, 367 flow. Second operand 11 states and 116 transitions. [2024-06-14 12:10:13,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 77 transitions, 561 flow [2024-06-14 12:10:13,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 77 transitions, 527 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:10:13,409 INFO L231 Difference]: Finished difference. Result has 100 places, 52 transitions, 319 flow [2024-06-14 12:10:13,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=319, PETRI_PLACES=100, PETRI_TRANSITIONS=52} [2024-06-14 12:10:13,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-14 12:10:13,412 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 52 transitions, 319 flow [2024-06-14 12:10:13,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:13,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:13,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:10:13,413 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)] === [2024-06-14 12:10:13,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1292083973, now seen corresponding path program 4 times [2024-06-14 12:10:13,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:13,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057618189] [2024-06-14 12:10:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:13,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:14,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:14,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057618189] [2024-06-14 12:10:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057618189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:14,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:14,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525744615] [2024-06-14 12:10:14,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:14,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:14,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:14,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:14,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:14,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 52 transitions, 319 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:14,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:14,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:14,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:14,665 INFO L124 PetriNetUnfolderBase]: 115/247 cut-off events. [2024-06-14 12:10:14,665 INFO L125 PetriNetUnfolderBase]: For 5162/5162 co-relation queries the response was YES. [2024-06-14 12:10:14,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 247 events. 115/247 cut-off events. For 5162/5162 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 904 event pairs, 25 based on Foata normal form. 6/253 useless extension candidates. Maximal degree in co-relation 860. Up to 174 conditions per place. [2024-06-14 12:10:14,668 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 39 selfloop transitions, 12 changer transitions 13/66 dead transitions. [2024-06-14 12:10:14,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 66 transitions, 481 flow [2024-06-14 12:10:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:14,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:14,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 12:10:14,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-14 12:10:14,669 INFO L175 Difference]: Start difference. First operand has 100 places, 52 transitions, 319 flow. Second operand 11 states and 112 transitions. [2024-06-14 12:10:14,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 66 transitions, 481 flow [2024-06-14 12:10:14,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 66 transitions, 449 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:10:14,675 INFO L231 Difference]: Finished difference. Result has 88 places, 47 transitions, 282 flow [2024-06-14 12:10:14,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=88, PETRI_TRANSITIONS=47} [2024-06-14 12:10:14,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2024-06-14 12:10:14,675 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 47 transitions, 282 flow [2024-06-14 12:10:14,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:14,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:14,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:14,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:10:14,676 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)] === [2024-06-14 12:10:14,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash -212093393, now seen corresponding path program 5 times [2024-06-14 12:10:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426537577] [2024-06-14 12:10:14,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:14,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426537577] [2024-06-14 12:10:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426537577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:15,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264936933] [2024-06-14 12:10:15,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:15,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:16,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:16,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 47 transitions, 282 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:16,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:16,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:16,259 INFO L124 PetriNetUnfolderBase]: 102/224 cut-off events. [2024-06-14 12:10:16,259 INFO L125 PetriNetUnfolderBase]: For 3540/3540 co-relation queries the response was YES. [2024-06-14 12:10:16,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 224 events. 102/224 cut-off events. For 3540/3540 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 791 event pairs, 23 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 760. Up to 154 conditions per place. [2024-06-14 12:10:16,260 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 35 selfloop transitions, 8 changer transitions 16/61 dead transitions. [2024-06-14 12:10:16,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 61 transitions, 432 flow [2024-06-14 12:10:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:16,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-14 12:10:16,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-14 12:10:16,261 INFO L175 Difference]: Start difference. First operand has 88 places, 47 transitions, 282 flow. Second operand 11 states and 111 transitions. [2024-06-14 12:10:16,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 61 transitions, 432 flow [2024-06-14 12:10:16,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 61 transitions, 386 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 12:10:16,265 INFO L231 Difference]: Finished difference. Result has 82 places, 41 transitions, 215 flow [2024-06-14 12:10:16,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=215, PETRI_PLACES=82, PETRI_TRANSITIONS=41} [2024-06-14 12:10:16,266 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2024-06-14 12:10:16,266 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 41 transitions, 215 flow [2024-06-14 12:10:16,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:16,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:16,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:16,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:10:16,266 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)] === [2024-06-14 12:10:16,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1499435649, now seen corresponding path program 6 times [2024-06-14 12:10:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:16,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021143833] [2024-06-14 12:10:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:16,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:17,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021143833] [2024-06-14 12:10:17,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021143833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:17,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:17,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:17,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348420129] [2024-06-14 12:10:17,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:17,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:17,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:17,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:17,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:17,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:17,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 41 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:17,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:17,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:17,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:17,640 INFO L124 PetriNetUnfolderBase]: 87/195 cut-off events. [2024-06-14 12:10:17,640 INFO L125 PetriNetUnfolderBase]: For 2906/2906 co-relation queries the response was YES. [2024-06-14 12:10:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 195 events. 87/195 cut-off events. For 2906/2906 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 654 event pairs, 21 based on Foata normal form. 6/201 useless extension candidates. Maximal degree in co-relation 634. Up to 133 conditions per place. [2024-06-14 12:10:17,641 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 33 selfloop transitions, 9 changer transitions 11/55 dead transitions. [2024-06-14 12:10:17,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 55 transitions, 355 flow [2024-06-14 12:10:17,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:17,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 12:10:17,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:10:17,642 INFO L175 Difference]: Start difference. First operand has 82 places, 41 transitions, 215 flow. Second operand 11 states and 110 transitions. [2024-06-14 12:10:17,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 55 transitions, 355 flow [2024-06-14 12:10:17,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 55 transitions, 327 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:10:17,644 INFO L231 Difference]: Finished difference. Result has 74 places, 38 transitions, 194 flow [2024-06-14 12:10:17,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=194, PETRI_PLACES=74, PETRI_TRANSITIONS=38} [2024-06-14 12:10:17,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-06-14 12:10:17,645 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 38 transitions, 194 flow [2024-06-14 12:10:17,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:17,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:17,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:17,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:10:17,645 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)] === [2024-06-14 12:10:17,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1285719127, now seen corresponding path program 7 times [2024-06-14 12:10:17,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:17,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238945842] [2024-06-14 12:10:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:18,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238945842] [2024-06-14 12:10:18,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238945842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:18,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:18,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:18,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380637603] [2024-06-14 12:10:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:18,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:18,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:18,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 38 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:18,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:18,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:18,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:19,104 INFO L124 PetriNetUnfolderBase]: 77/177 cut-off events. [2024-06-14 12:10:19,104 INFO L125 PetriNetUnfolderBase]: For 2164/2164 co-relation queries the response was YES. [2024-06-14 12:10:19,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 177 events. 77/177 cut-off events. For 2164/2164 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 561 event pairs, 27 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 564. Up to 102 conditions per place. [2024-06-14 12:10:19,105 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 28 selfloop transitions, 9 changer transitions 11/50 dead transitions. [2024-06-14 12:10:19,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 50 transitions, 320 flow [2024-06-14 12:10:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:10:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:10:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 12:10:19,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33548387096774196 [2024-06-14 12:10:19,106 INFO L175 Difference]: Start difference. First operand has 74 places, 38 transitions, 194 flow. Second operand 10 states and 104 transitions. [2024-06-14 12:10:19,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 50 transitions, 320 flow [2024-06-14 12:10:19,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 50 transitions, 296 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:10:19,108 INFO L231 Difference]: Finished difference. Result has 69 places, 34 transitions, 174 flow [2024-06-14 12:10:19,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=69, PETRI_TRANSITIONS=34} [2024-06-14 12:10:19,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-14 12:10:19,108 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 34 transitions, 174 flow [2024-06-14 12:10:19,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:19,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:19,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:19,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:10:19,108 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)] === [2024-06-14 12:10:19,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1487067847, now seen corresponding path program 8 times [2024-06-14 12:10:19,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:19,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17178476] [2024-06-14 12:10:19,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:19,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:20,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17178476] [2024-06-14 12:10:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17178476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266027607] [2024-06-14 12:10:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:20,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:20,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 34 transitions, 174 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:20,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:20,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:20,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:20,645 INFO L124 PetriNetUnfolderBase]: 68/158 cut-off events. [2024-06-14 12:10:20,645 INFO L125 PetriNetUnfolderBase]: For 1742/1742 co-relation queries the response was YES. [2024-06-14 12:10:20,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 158 events. 68/158 cut-off events. For 1742/1742 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 470 event pairs, 19 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 500. Up to 84 conditions per place. [2024-06-14 12:10:20,646 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 23 selfloop transitions, 6 changer transitions 17/48 dead transitions. [2024-06-14 12:10:20,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 48 transitions, 298 flow [2024-06-14 12:10:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:20,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 12:10:20,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-14 12:10:20,647 INFO L175 Difference]: Start difference. First operand has 69 places, 34 transitions, 174 flow. Second operand 11 states and 110 transitions. [2024-06-14 12:10:20,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 48 transitions, 298 flow [2024-06-14 12:10:20,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 48 transitions, 274 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:10:20,648 INFO L231 Difference]: Finished difference. Result has 65 places, 28 transitions, 139 flow [2024-06-14 12:10:20,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=139, PETRI_PLACES=65, PETRI_TRANSITIONS=28} [2024-06-14 12:10:20,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 12:10:20,649 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 28 transitions, 139 flow [2024-06-14 12:10:20,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:20,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:20,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:20,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:10:20,649 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)] === [2024-06-14 12:10:20,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1278293283, now seen corresponding path program 9 times [2024-06-14 12:10:20,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:20,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275708340] [2024-06-14 12:10:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:20,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:21,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:21,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275708340] [2024-06-14 12:10:21,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275708340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:21,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:21,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:10:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59608629] [2024-06-14 12:10:21,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:21,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:10:21,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:10:21,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:10:21,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:21,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 28 transitions, 139 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:21,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:21,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:21,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:22,093 INFO L124 PetriNetUnfolderBase]: 54/128 cut-off events. [2024-06-14 12:10:22,093 INFO L125 PetriNetUnfolderBase]: For 1352/1352 co-relation queries the response was YES. [2024-06-14 12:10:22,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 128 events. 54/128 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 330 event pairs, 17 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 402. Up to 66 conditions per place. [2024-06-14 12:10:22,093 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 5 changer transitions 16/41 dead transitions. [2024-06-14 12:10:22,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 41 transitions, 245 flow [2024-06-14 12:10:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 12:10:22,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-14 12:10:22,095 INFO L175 Difference]: Start difference. First operand has 65 places, 28 transitions, 139 flow. Second operand 11 states and 106 transitions. [2024-06-14 12:10:22,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 41 transitions, 245 flow [2024-06-14 12:10:22,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 41 transitions, 223 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:10:22,096 INFO L231 Difference]: Finished difference. Result has 56 places, 22 transitions, 102 flow [2024-06-14 12:10:22,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=22} [2024-06-14 12:10:22,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-14 12:10:22,097 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 22 transitions, 102 flow [2024-06-14 12:10:22,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:22,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:10:22,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:22,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:10:22,097 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)] === [2024-06-14 12:10:22,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:10:22,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1502319929, now seen corresponding path program 10 times [2024-06-14 12:10:22,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:10:22,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893574133] [2024-06-14 12:10:22,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:10:22,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:10:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:10:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:10:22,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:10:22,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893574133] [2024-06-14 12:10:22,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893574133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:10:22,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:10:22,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:10:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983907436] [2024-06-14 12:10:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:10:22,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:10:22,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:10:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:10:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:10:22,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-14 12:10:22,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 22 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:22,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:10:22,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-14 12:10:22,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:10:23,146 INFO L124 PetriNetUnfolderBase]: 26/68 cut-off events. [2024-06-14 12:10:23,147 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2024-06-14 12:10:23,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 68 events. 26/68 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 6/74 useless extension candidates. Maximal degree in co-relation 176. Up to 24 conditions per place. [2024-06-14 12:10:23,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 12:10:23,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 31 transitions, 156 flow [2024-06-14 12:10:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:10:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:10:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-14 12:10:23,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-14 12:10:23,148 INFO L175 Difference]: Start difference. First operand has 56 places, 22 transitions, 102 flow. Second operand 11 states and 96 transitions. [2024-06-14 12:10:23,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 31 transitions, 156 flow [2024-06-14 12:10:23,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 126 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-14 12:10:23,148 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2024-06-14 12:10:23,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=11, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2024-06-14 12:10:23,149 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2024-06-14 12:10:23,149 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2024-06-14 12:10:23,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:10:23,151 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:10:23,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:10:23,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:10:23,155 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:10:23,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:10:23,156 INFO L445 BasicCegarLoop]: Path program histogram: [25, 16, 12, 11, 10, 8, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:10:23,158 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:10:23,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:10:23,162 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:10:23,162 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:10:23,163 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:10:23 BasicIcfg [2024-06-14 12:10:23,163 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:10:23,164 INFO L158 Benchmark]: Toolchain (without parser) took 129750.51ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 933.2MB). Free memory was 139.5MB in the beginning and 782.5MB in the end (delta: -643.0MB). Peak memory consumption was 289.9MB. Max. memory is 16.1GB. [2024-06-14 12:10:23,164 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 167.8MB. Free memory was 125.5MB in the beginning and 125.4MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:10:23,164 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 167.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:10:23,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 554.68ms. Allocated memory is still 167.8MB. Free memory was 139.5MB in the beginning and 106.5MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:10:23,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.59ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 103.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:10:23,165 INFO L158 Benchmark]: Boogie Preprocessor took 54.67ms. Allocated memory is still 167.8MB. Free memory was 103.9MB in the beginning and 100.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:10:23,165 INFO L158 Benchmark]: RCFGBuilder took 592.92ms. Allocated memory is still 167.8MB. Free memory was 100.8MB in the beginning and 135.6MB in the end (delta: -34.7MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2024-06-14 12:10:23,165 INFO L158 Benchmark]: TraceAbstraction took 128488.11ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 933.2MB). Free memory was 134.6MB in the beginning and 782.5MB in the end (delta: -647.9MB). Peak memory consumption was 285.2MB. Max. memory is 16.1GB. [2024-06-14 12:10:23,166 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 167.8MB. Free memory was 125.5MB in the beginning and 125.4MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.10ms. Allocated memory is still 167.8MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 554.68ms. Allocated memory is still 167.8MB. Free memory was 139.5MB in the beginning and 106.5MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.59ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 103.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.67ms. Allocated memory is still 167.8MB. Free memory was 103.9MB in the beginning and 100.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 592.92ms. Allocated memory is still 167.8MB. Free memory was 100.8MB in the beginning and 135.6MB in the end (delta: -34.7MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. * TraceAbstraction took 128488.11ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 933.2MB). Free memory was 134.6MB in the beginning and 782.5MB in the end (delta: -647.9MB). Peak memory consumption was 285.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: 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, 49 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: 128.4s, OverallIterations: 111, TraceHistogramMax: 1, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 42.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6913 SdHoareTripleChecker+Valid, 24.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5889 mSDsluCounter, 3223 SdHoareTripleChecker+Invalid, 20.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2753 mSDsCounter, 1367 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41483 IncrementalHoareTripleChecker+Invalid, 42850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1367 mSolverCounterUnsat, 470 mSDtfsCounter, 41483 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1224 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2501 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1404occurred in iteration=60, InterpolantAutomatonStates: 1035, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 83.9s InterpolantComputationTime, 1846 NumberOfCodeBlocks, 1846 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 1735 ConstructedInterpolants, 0 QuantifiedInterpolants, 70559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 111 InterpolantComputations, 111 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 12:10:23,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE